Grab bucket device and engineering equipment

Abstract

The utility model provides a grab bucket device and engineering equipment. A grab bucket device comprises a connecting pipe, a plurality of oil cylinder lug plate assemblies, a claw arm mounting seat and a plurality of claw arm lug plate assemblies, the first end of the connecting pipe is used for being connected with a mechanical arm of engineering equipment, the oil cylinder lug plate assemblies are detachably mounted on the connecting pipe, the claw arm mounting seat is mounted at the second end of the connecting pipe, and the claw arm lug plate assemblies are detachably mounted on the claw arm mounting seat. The multiple claw arm lug plate assemblies are detachably installed on the claw arm installation base, and the multiple oil cylinder lug plate assemblies and the multiple claw arm lug plate assemblies are arranged in a one-to-one correspondence mode in the axial direction of the connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a grab bucket device and engineering equipment. Background Art

[0002] The grab bucket excavator for engineering equipment is an excavator with a grab bucket for engineering equipment as an accessory. The telescopic grab bucket for engineering equipment includes a plurality of telescopic claw arms. The extension and retraction of the claw arms can close or open the grab bucket for engineering equipment to clean up construction waste, fallen trees, large stones on the road surface, etc. The grab bucket for engineering equipment is usually fixed at the end of the excavator's mechanical arm, and the hydraulic power source of the excavator provides power for the grab bucket for engineering equipment.

[0003] The number of arms of the existing grab devices for engineering equipment is usually fixed. In actual application, there may be a situation where the number of arms of the grab devices for engineering equipment needs to be replaced. For example, when grabbing large stones, it is more suitable to use a three-claw grab device for engineering equipment, and when grabbing trees, it is suitable to use a two-claw grab device for engineering equipment. If the number of claw arms needs to be changed, the claw arm and the pin shaft on the claw arm ear plate need to be knocked down, and the pin shaft on the cylinder ear plate also needs to be removed, which can easily cause damage to the claw arm ear plate and the cylinder ear plate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a grab bucket device and engineering equipment in view of the deficiencies in the prior art.

[0005] The utility model solves the above-mentioned technical problem with the following technical solution: a grab device, comprising: a connecting pipe, a plurality of cylinder ear plate assemblies, a claw arm mounting seat, and a plurality of claw arm ear plate assemblies. The first end of the connecting pipe is used to connect to the mechanical arm of the engineering equipment. The plurality of cylinder ear plate assemblies can be detachably mounted on the connecting pipe. The claw arm mounting seat is mounted on the second end of the connecting pipe. The plurality of claw arm ear plate assemblies can be detachably mounted on the claw arm mounting seat. The plurality of cylinder ear plate assemblies and the plurality of claw arm ear plate assemblies are arranged in a one-to-one correspondence in the axial direction of the connecting pipe.

[0006] The beneficial effect of adopting the technical solution of the utility model is as follows: by arranging the cylinder ear plate assembly and the connecting pipe as a detachable connection, and arranging the claw arm ear plate assembly and the claw arm mounting seat as a detachable connection, when it is necessary to change the number of claw arms, the claw arm ear plate assembly and the claw arm are disassembled together, and the hydraulic telescopic part and the cylinder ear plate assembly are disassembled together, and the number of claw arms of the grab device is changed by removing the claw arm ear plate assembly and the cylinder ear plate assembly, which facilitates the change of the number of claw arms, can extend the service life of the cylinder ear plate and the claw arm ear plate, and improves the stability and durability of the grab device.

[0007] Furthermore, a plurality of the cylinder ear plate assemblies are circumferentially spaced apart along the outer wall of the connecting pipe, a plurality of the claw arm ear plate assemblies are circumferentially spaced apart along the outer wall of the claw arm mounting seat, and the number of the cylinder ear plate assemblies is the same as the number of the claw arm ear plate assemblies.

[0008] The beneficial effect of adopting the above further technical solution is that the hydraulic drive components and claw arms on the grab device are installed one by one, and the hydraulic drive components drive the claw arms to extend and retract. When multiple claw arms are driven to move at the same time, the grab device will be retracted or opened.

[0009] Furthermore, a hydraulic driving component is installed on the oil cylinder ear plate assembly, a claw arm is installed on the claw arm ear plate assembly, and the hydraulic driving component is connected to the claw arm.

[0010] Furthermore, the cylinder ear plate assembly includes a pair of cylinder ear plates arranged in parallel and at intervals, and the claw arm ear plate assembly includes a pair of claw arm ear plates arranged in parallel and at intervals; the connecting pipe and the claw arm mounting seat are both cylindrical structures.

[0011] Further, a first columnar cavity and a plurality of first connecting members are provided inside the connecting pipe, a plurality of first connecting holes are provided on the cavity wall of the first columnar cavity, one ends of the plurality of first connecting members are connected to the cavity wall of the first columnar cavity, and the other ends of the plurality of first connecting members pass through the plurality of first connecting holes one by one and are threadedly connected to the plurality of cylinder ear plate assemblies; a second columnar cavity and a plurality of second connecting members are provided inside the claw arm mounting seat, a plurality of second connecting holes are provided on the cavity wall of the second columnar cavity, one ends of the plurality of second connecting members are connected to the cavity wall of the second columnar cavity, and the other ends of the plurality of second connecting members pass through the plurality of second connecting holes one by one and are threadedly connected to the plurality of claw arm ear plate assemblies; the first columnar cavity is connected to the second columnar cavity.

[0012] The beneficial effect of adopting the above further technical solution is: a first columnar cavity is formed inside, and a plurality of first connecting holes are provided on the cavity wall. The plurality of first connecting holes are used to install the first connecting piece, and the first connecting piece is threadedly connected to the cylinder ear plate assembly, so that the cylinder ear plate assembly can be locked to the connecting pipe. When the cylinder ear plate assembly needs to be removed, the staff can use a tool to remove the first connecting piece from the first columnar cavity, which is convenient for the removal and installation of the cylinder ear plate and prolongs the service life of the cylinder ear plate assembly. A second columnar cavity is formed inside the claw arm mounting seat, and a plurality of second connecting holes are provided on the cavity wall. The second connecting piece passes through the second connecting hole and is threadedly connected to the claw arm ear plate assembly, and the claw arm ear plate is locked to the claw arm mounting seat. When the claw arm ear plate assembly needs to be removed, the staff can use a tool to remove the second connecting piece from the second columnar cavity. It is convenient for the removal and installation of the claw arm ear plate assembly and prolongs the service life of the claw arm ear plate assembly. The first columnar cavity and the second columnar cavity are connected end to end in sequence, and a worker can remove the first connecting member or the second connecting member from the opening of the first columnar cavity or the second columnar cavity with the help of a tool.

[0013] Furthermore, a first hydraulic oil ring and a second hydraulic oil ring are sleeved on the outer side of the connecting pipe, a first accommodating chamber for communicating with a hydraulic oil source of engineering equipment is provided inside the first hydraulic oil ring, a plurality of first hydraulic joints are detachably mounted on the first hydraulic oil ring, a first end of the first hydraulic joint is communicated with the first accommodating chamber, and a second end of the first hydraulic joint is used to communicate with a first oil inlet of the hydraulic drive component; a second accommodating chamber for communicating with a hydraulic oil source of engineering equipment is provided inside the second hydraulic oil ring, a plurality of second hydraulic joints are detachably mounted on the second hydraulic oil ring, a first end of the second hydraulic joint is communicated with the second accommodating chamber, and a second end of the second hydraulic joint is used to communicate with a first oil outlet of the hydraulic drive component.

[0014] The beneficial effect of adopting the above further technical solution is that the first hydraulic oil ring can collect the hydraulic oil transmitted by the hydraulic oil source and transmit it to the hydraulic drive part. Because the hydraulic oil of each hydraulic drive part comes from the first hydraulic oil ring, the hydraulic oil pressure in each hydraulic drive part is equal, so that each claw arm of the grab device is subjected to a uniform driving force, which is convenient for the grab device to perform the grabbing work. In addition, the first hydraulic joint is detachably connected to the first hydraulic oil ring. When any of the first hydraulic joints is damaged, the first hydraulic joint can be replaced to avoid the damage of the first hydraulic joint causing the failure of the entire grab device. The second hydraulic oil ring can collect the hydraulic oil transmitted by each hydraulic drive part to the hydraulic oil source, and the second hydraulic joint is detachably connected to the second hydraulic oil ring. When any of the second hydraulic joints is damaged, the second hydraulic joint can be replaced to avoid the damage of the second hydraulic joint causing the damage of the entire grab device. The first hydraulic joint is detachably connected to the first hydraulic oil ring, and the second hydraulic joint is detachably connected to the second hydraulic oil ring. When any of the first hydraulic joints or the second hydraulic joints is damaged, the damaged first hydraulic joint or the second hydraulic joint can be replaced, saving equipment costs.

[0015] Further, a plurality of second oil outlets are provided on the cavity wall of the first accommodating cavity, and the first ends of the plurality of first hydraulic connectors are connected to the plurality of second oil outlets in a one-to-one correspondence; a plurality of second oil inlets are provided on the cavity wall of the second accommodating cavity, and the first ends of the plurality of second hydraulic connectors are connected to the plurality of second oil inlets in a one-to-one correspondence; a first switch valve is provided on the first hydraulic oil ring, and the first end of the first switch valve is connected to the first accommodating cavity, and the second end of the first switch valve is connected to the first oil inlet of the hydraulic drive component; a second switch valve is provided on the second hydraulic oil ring, and the first end of the second switch valve is connected to the second accommodating cavity, and the second end of the second switch valve is connected to the first oil outlet of the hydraulic drive component.

[0016] The beneficial effect of adopting the above further technical solution is that the first switch valve can control the on-off of the oil circuit between the first hydraulic oil ring and the hydraulic drive component, making the claw arm control of the grab device more flexible. The second switch valve can control the on-off of the oil circuit between the second hydraulic oil ring and the hydraulic drive component.

[0017] Further, a first blocking piece is detachably provided in the second oil outlet, a second blocking piece is detachably provided in the second oil inlet, or a first blocking piece is detachably provided on the first hydraulic joint, a second blocking piece is detachably provided on the second hydraulic joint.

[0018] The beneficial effect of adopting the above further technical solution is: the first blocking member is detachably arranged on the first hydraulic oil ring and is used to block the second oil outlet in a redundant state; the second blocking member is detachably arranged on the second hydraulic oil ring and is used to block the second oil inlet in a redundant state. When the claw arm of the grab device is disassembled, the hydraulic drive member needs to be disassembled and the corresponding hydraulic pipeline needs to be blocked. For example, when the claw arm located in a certain position is disassembled, the hydraulic drive member in the above position needs to be disassembled and the hydraulic pipeline connected to the inlet and outlet of the hydraulic drive member needs to be blocked. The second oil inlet in the redundant state is the second oil inlet that is not connected to the hydraulic drive member after the hydraulic drive member is removed; the second oil outlet in the redundant state is the second oil outlet that is not connected to the hydraulic drive member after the hydraulic drive member is removed. The staff can disassemble the second hydraulic connector on the second oil inlet and replace it with the second blocking member to block the second oil inlet. The first hydraulic connector on the second oil outlet can also be disassembled and replaced with the first blocking member to block the second oil outlet.

[0019] Furthermore, a grab bucket mounting plate is detachably mounted on the first end of the connecting pipe, and a grab bucket ear plate assembly for detachably connecting to the mechanical arm is mounted on the grab bucket mounting plate.

[0020] The beneficial effect of adopting the above further technical solution is that the arrangement of the grab bucket mounting plate and the grab bucket ear plate assembly allows the grab bucket device to be mounted on the mechanical arm of the engineering equipment, and the mechanical arm of the engineering equipment drives the grab bucket device to move. The grab bucket mounting plate is detachably connected to the first end of the connecting pipe. When it is necessary to replace the claw arm of other models, the connecting pipe and the grab bucket mounting plate can be directly removed, and the claw arm, connecting pipe, hydraulic drive component, claw arm mounting seat, etc. can be replaced as a whole.

[0021] Further, the grab ear plate assembly includes: a first grab ear plate and a second grab ear plate, the first grab ear plate and the second grab ear plate are arranged in parallel and spaced apart, the first grab ear plate and the second grab ear plate are respectively provided with a first mounting hole and a second mounting hole, the first mounting hole is detachably mounted with a first sleeve, and the second mounting hole is detachably mounted with a second sleeve.

[0022] The beneficial effect of adopting the above further technical solution is that an installation space for installing the mechanical arm is formed between the first grab lug plate and the second grab lug plate. The pin on the mechanical arm can pass through the first grab lug plate, the mounting portion of the mechanical arm, and the second grab lug plate in sequence to drive the grab device to move. The first sleeve and the second sleeve are provided to adapt to pins of different sizes. When the pin of the mounting portion of the mechanical arm is small, the installation sleeve assembly is provided to make the grab lug assembly indirectly contact with the pin, and the pin of the mechanical arm passes through the first sleeve, the mounting portion of the mechanical arm, and the second sleeve in sequence, and the pin is in close contact with the above three components, with high stability.

[0023] Further, the first sleeve includes: a sleeve portion and a connecting portion, the sleeve portion is installed in the first mounting hole, the connecting portion is installed at one end of the sleeve portion, the connecting portion is detachably connected to the first grab ear plate, and the first sleeve and the second sleeve have the same structure.

[0024] The beneficial effect of adopting the above further technical solution is that the inner diameters of the sleeve parts of different models of first sleeves are different to adapt to connecting shafts of different thicknesses. When the sleeve assembly needs to be installed, the staff sleeves the first sleeve on the first end of the connecting shaft, and the connecting part of the first sleeve is detachably connected to the first grab lug plate, and the second sleeve is sleeved on the second end of the connecting shaft. And the connecting part of the second sleeve is detachably connected to the second grab lug plate. By adopting the above sleeve assembly, the same grab device can be adapted to a variety of different mechanical arm pins, making the application scenarios of the grab device more extensive.

[0025] In addition, the utility model also provides an engineering equipment, comprising a grab bucket device as described in any one of the above items.

[0026] The beneficial effect of adopting the technical solution of the utility model is as follows: by arranging the cylinder ear plate assembly and the connecting pipe as a detachable connection, and arranging the claw arm ear plate assembly and the claw arm mounting seat as a detachable connection, when it is necessary to change the number of claw arms, the claw arm ear plate assembly and the claw arm are disassembled together, and the hydraulic telescopic part and the cylinder ear plate assembly are disassembled together, and the number of claw arms of the grab device is changed by removing the claw arm ear plate assembly and the cylinder ear plate assembly, which facilitates the change of the number of claw arms, can extend the service life of the cylinder ear plate and the claw arm ear plate, and improves the stability and durability of the grab device.

[0027] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a grab bucket device provided in an embodiment of the utility model.

[0029] Figure 2 This is one of the structural schematic diagrams of the first sleeve provided in an embodiment of the utility model.

[0030] Figure 3 The second structural schematic diagram of the first sleeve provided in the embodiment of the utility model.

[0031] Explanation of the accompanying drawings: 1. connecting pipe; 2. cylinder ear plate assembly; 3. claw arm mounting seat; 4. claw arm ear plate assembly; 5. first hydraulic oil ring; 6. first hydraulic joint; 7. second hydraulic oil ring; 8. second hydraulic joint; 9. grab bucket mounting plate; 10. grab bucket ear plate assembly; 101. first grab bucket ear plate; 102. second grab bucket ear plate; 11. first sleeve; 111. sleeve part; 112. connecting part. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figures 1 to 3 As shown, an embodiment of the utility model provides a grab device, comprising: a connecting pipe 1, a plurality of cylinder ear plate assemblies 2, a claw arm mounting seat 3, and a plurality of claw arm ear plate assemblies 4, wherein the first end of the connecting pipe 1 is used to connect to the mechanical arm of the engineering equipment, the plurality of cylinder ear plate assemblies 2 can be detachably mounted on the connecting pipe 1, the claw arm mounting seat 3 is mounted on the second end of the connecting pipe 1, the plurality of claw arm ear plate assemblies 4 can be detachably mounted on the claw arm mounting seat 3, and the plurality of cylinder ear plate assemblies 2 and the plurality of claw arm ear plate assemblies 4 are arranged one by one in the axial direction of the connecting pipe 1.

[0034] The beneficial effect of adopting the technical solution of the utility model is as follows: by arranging the cylinder ear plate assembly and the connecting pipe as a detachable connection, and arranging the claw arm ear plate assembly and the claw arm mounting seat as a detachable connection, when it is necessary to change the number of claw arms, the claw arm ear plate assembly and the claw arm are disassembled together, and the hydraulic telescopic part and the cylinder ear plate assembly are disassembled together, and the number of claw arms of the grab device is changed by removing the claw arm ear plate assembly and the cylinder ear plate assembly, which facilitates the change of the number of claw arms, can extend the service life of the cylinder ear plate and the claw arm ear plate, and improves the stability and durability of the grab device.

[0035] By arranging the cylinder ear plate assembly and the connecting pipe as a detachable connection, and arranging the claw arm ear plate assembly and the claw arm mounting seat as a detachable connection, when the number of claw arms needs to be changed, the claw arm ear plate assembly and the claw arm are disassembled together, and the hydraulic telescopic part and the cylinder ear plate assembly are disassembled together, thereby extending the service life of the cylinder ear plate and the claw arm ear plate.

[0036] like Figures 1 to 3 As shown, further, a plurality of the cylinder ear plate assemblies 2 are arranged at intervals along the circumferential outer wall of the connecting pipe 1, and a plurality of claw arm ear plate assemblies 4 are arranged at intervals along the circumferential outer wall of the claw arm mounting seat 3, and the number of the cylinder ear plate assemblies 2 is the same as the number of the claw arm ear plate assemblies 4.

[0037] The beneficial effect of adopting the above further technical solution is that the hydraulic drive components and claw arms on the grab device are installed one by one, and the hydraulic drive components drive the claw arms to extend and retract. When multiple claw arms are driven to move at the same time, the grab device will be retracted or opened.

[0038] like Figures 1 to 3 As shown, further, a hydraulic driving component is installed on the cylinder ear plate assembly 2, a claw arm is installed on the claw arm ear plate assembly 4, and the hydraulic driving component is connected to the claw arm.

[0039] like Figures 1 to 3 As shown, further, the cylinder ear plate assembly 2 includes a pair of cylinder ear plates arranged in parallel and spaced apart, and the claw arm ear plate assembly 4 includes a pair of claw arm ear plates arranged in parallel and spaced apart; the connecting pipe 1 and the claw arm mounting seat 3 are both cylindrical structures.

[0040] like Figures 1 to 3 As shown, further, a first columnar cavity and a plurality of first connecting members are provided inside the connecting pipe 1, a plurality of first connecting holes are provided on the cavity wall of the first columnar cavity, one ends of the plurality of first connecting members are connected to the cavity wall of the first columnar cavity, and the other ends of the plurality of first connecting members pass through the plurality of first connecting holes one by one and are threadedly connected to the plurality of cylinder ear plate assemblies 2; a second columnar cavity and a plurality of second connecting members are provided inside the claw arm mounting seat 3, a plurality of second connecting holes are provided on the cavity wall of the second columnar cavity, one ends of the plurality of second connecting members are connected to the cavity wall of the second columnar cavity, and the other ends of the plurality of second connecting members pass through the plurality of second connecting holes one by one and are threadedly connected to the plurality of claw arm ear plate assemblies 4; the first columnar cavity is connected to the second columnar cavity.

[0041] The beneficial effect of adopting the above further technical solution is: a first columnar cavity is formed inside, and a plurality of first connecting holes are provided on the cavity wall. The plurality of first connecting holes are used to install the first connecting piece, and the first connecting piece is threadedly connected to the cylinder ear plate assembly, so that the cylinder ear plate assembly can be locked to the connecting pipe. When the cylinder ear plate assembly needs to be removed, the staff can use a tool to remove the first connecting piece from the first columnar cavity, which is convenient for the removal and installation of the cylinder ear plate and prolongs the service life of the cylinder ear plate assembly. A second columnar cavity is formed inside the claw arm mounting seat, and a plurality of second connecting holes are provided on the cavity wall. The second connecting piece passes through the second connecting hole and is threadedly connected to the claw arm ear plate assembly, and the claw arm ear plate is locked to the claw arm mounting seat. When the claw arm ear plate assembly needs to be removed, the staff can use a tool to remove the second connecting piece from the second columnar cavity. It is convenient for the removal and installation of the claw arm ear plate assembly and prolongs the service life of the claw arm ear plate assembly. The first columnar cavity and the second columnar cavity are connected end to end in sequence, and a worker can remove the first connecting member or the second connecting member from the opening of the first columnar cavity or the second columnar cavity with the help of a tool.

[0042] like Figures 1 to 3 As shown, further, the outer side of the connecting pipe 1 is sleeved with a first hydraulic oil ring 5 and a second hydraulic oil ring 7, the interior of the first hydraulic oil ring 5 is provided with a first accommodating chamber for communicating with the hydraulic oil source of the engineering equipment, and a plurality of first hydraulic connectors 6 are detachably mounted on the first hydraulic oil ring, the first end of the first hydraulic connector 6 is communicated with the first accommodating chamber, and the second end of the first hydraulic connector 6 is used to communicate with the first oil inlet of the hydraulic drive component; the interior of the second hydraulic oil ring 7 is provided with a second accommodating chamber for communicating with the hydraulic oil source of the engineering equipment, and a plurality of second hydraulic connectors 8 are detachably mounted on the second hydraulic oil ring, the first end of the second hydraulic connector 8 is communicated with the second accommodating chamber, and the second end of the second hydraulic connector 8 is used to communicate with the first oil outlet of the hydraulic drive component.

[0043] The beneficial effect of adopting the above further technical solution is that the first hydraulic oil ring can collect the hydraulic oil transmitted by the hydraulic oil source and transmit it to the hydraulic drive part. Because the hydraulic oil of each hydraulic drive part comes from the first hydraulic oil ring, the hydraulic oil pressure in each hydraulic drive part is equal, so that each claw arm of the grab device is subjected to a uniform driving force, which is convenient for the grab device to perform the grabbing work. In addition, the first hydraulic joint is detachably connected to the first hydraulic oil ring. When any of the first hydraulic joints is damaged, the first hydraulic joint can be replaced to avoid the damage of the first hydraulic joint causing the failure of the entire grab device. The second hydraulic oil ring can collect the hydraulic oil transmitted by each hydraulic drive part to the hydraulic oil source, and the second hydraulic joint is detachably connected to the second hydraulic oil ring. When any of the second hydraulic joints is damaged, the second hydraulic joint can be replaced to avoid the damage of the second hydraulic joint causing the damage of the entire grab device. The first hydraulic joint is detachably connected to the first hydraulic oil ring, and the second hydraulic joint is detachably connected to the second hydraulic oil ring. When any of the first hydraulic joints or the second hydraulic joints is damaged, the damaged first hydraulic joint or the second hydraulic joint can be replaced, saving equipment costs.

[0044] like Figures 1 to 3 As shown, further, a plurality of second oil outlets are provided on the cavity wall of the first accommodating cavity, and the first ends of the plurality of first hydraulic connectors 6 are connected to the plurality of second oil outlets in a one-to-one correspondence; a plurality of second oil inlets are provided on the cavity wall of the second accommodating cavity, and the first ends of the plurality of second hydraulic connectors 8 are connected to the plurality of second oil inlets in a one-to-one correspondence; a first switch valve is provided on the first hydraulic oil ring 5, and the first end of the first switch valve is connected to the first accommodating cavity, and the second end of the first switch valve is connected to the first oil inlet of the hydraulic drive component; a second switch valve is provided on the second hydraulic oil ring 7, and the first end of the second switch valve is connected to the second accommodating cavity, and the second end of the second switch valve is connected to the first oil outlet of the hydraulic drive component.

[0045] The beneficial effect of adopting the above further technical solution is that the first switch valve can control the on-off of the oil circuit between the first hydraulic oil ring and the hydraulic drive component, making the claw arm control of the grab device more flexible. The second switch valve can control the on-off of the oil circuit between the second hydraulic oil ring and the hydraulic drive component.

[0046] like Figures 1 to 3 As shown, further, a first blocking piece is detachably provided in the second oil outlet, a second blocking piece is detachably provided in the second oil inlet, or a first blocking piece is detachably provided on the first hydraulic connector 6, and a second blocking piece is detachably provided on the second hydraulic connector 8.

[0047] The beneficial effect of adopting the above further technical solution is: the first blocking member is detachably arranged on the first hydraulic oil ring and is used to block the second oil outlet in a redundant state; the second blocking member is detachably arranged on the second hydraulic oil ring and is used to block the second oil inlet in a redundant state. When the claw arm of the grab device is disassembled, the hydraulic drive member needs to be disassembled and the corresponding hydraulic pipeline needs to be blocked. For example, when the claw arm located in a certain position is disassembled, the hydraulic drive member in the above position needs to be disassembled and the hydraulic pipeline connected to the inlet and outlet of the hydraulic drive member needs to be blocked. The second oil inlet in the redundant state is the second oil inlet that is not connected to the hydraulic drive member after the hydraulic drive member is removed; the second oil outlet in the redundant state is the second oil outlet that is not connected to the hydraulic drive member after the hydraulic drive member is removed. The staff can disassemble the second hydraulic connector on the second oil inlet and replace it with the second blocking member to block the second oil inlet. The first hydraulic connector on the second oil outlet can also be disassembled and replaced with the first blocking member to block the second oil outlet.

[0048] like Figures 1 to 3 As shown, further, a grab bucket mounting plate 9 is detachably mounted on the first end of the connecting pipe 1, and a grab bucket ear plate assembly 10 for detachably connecting to a mechanical arm is mounted on the grab bucket mounting plate 9.

[0049] The beneficial effect of adopting the above further technical solution is that the arrangement of the grab bucket mounting plate and the grab bucket ear plate assembly allows the grab bucket device to be mounted on the mechanical arm of the engineering equipment, and the mechanical arm of the engineering equipment drives the grab bucket device to move. The grab bucket mounting plate is detachably connected to the first end of the connecting pipe. When it is necessary to replace the claw arm of other models, the connecting pipe and the grab bucket mounting plate can be directly removed, and the claw arm, connecting pipe, hydraulic drive component, claw arm mounting seat, etc. can be replaced as a whole.

[0050] like Figures 1 to 3As shown, further, the grab ear plate assembly 10 includes: a first grab ear plate 101 and a second grab ear plate 102, the first grab ear plate 101 and the second grab ear plate 102 are arranged in parallel and spaced apart, the first grab ear plate 101 and the second grab ear plate 102 are respectively provided with a first mounting hole and a second mounting hole, the first mounting hole is detachably mounted with a first sleeve 11, and the second mounting hole is detachably mounted with a second sleeve.

[0051] The beneficial effect of adopting the above further technical solution is that an installation space for installing the mechanical arm is formed between the first grab lug plate and the second grab lug plate. The pin on the mechanical arm can pass through the first grab lug plate, the mounting portion of the mechanical arm, and the second grab lug plate in sequence to drive the grab device to move. The first sleeve and the second sleeve are provided to adapt to pins of different sizes. When the pin of the mounting portion of the mechanical arm is small, the installation sleeve assembly is provided to make the grab lug assembly indirectly contact with the pin, and the pin of the mechanical arm passes through the first sleeve, the mounting portion of the mechanical arm, and the second sleeve in sequence, and the pin is in close contact with the above three components, with high stability.

[0052] like Figures 1 to 3 As shown, further, the first sleeve 11 includes: a sleeve portion 111 and a connecting portion 112, the sleeve portion 111 is installed in the first mounting hole, the connecting portion 112 is installed at one end of the sleeve portion 111, the connecting portion 112 is detachably connected to the first grab ear plate 101, and the first sleeve 11 has the same structure as the second sleeve.

[0053] The beneficial effect of adopting the above further technical solution is that the inner diameters of the sleeve parts of different models of first sleeves are different to adapt to connecting shafts of different thicknesses. When the sleeve assembly needs to be installed, the staff sleeves the first sleeve on the first end of the connecting shaft, and the connecting part of the first sleeve is detachably connected to the first grab lug plate, and the second sleeve is sleeved on the second end of the connecting shaft. And the connecting part of the second sleeve is detachably connected to the second grab lug plate. By adopting the above sleeve assembly, the same grab device can be adapted to a variety of different mechanical arm pins, making the application scenarios of the grab device more extensive.

[0054] like Figure 1 As shown, the grab device provided in the embodiment of the utility model can be a grab device for engineering equipment, and the grab device includes:

[0055] A connecting pipe 1, the first end of which is used to be connected to a mechanical arm of the engineering equipment.

[0056] A plurality of cylinder ear plate assemblies 2 are detachably mounted on the connecting pipe 1 and are distributed at intervals along the circumference of the connecting pipe 1 .

[0057] The claw arm mounting seat 3 is arranged at the second end of the connecting pipe 1 .

[0058] Multiple claw arm ear plate assemblies 4 are detachably mounted on the claw arm mounting base 3 and are distributed at intervals along the circumference of the claw arm mounting base 3. The number of claw arm ear plate assemblies 4 is consistent with the number of cylinder ear plate assemblies 2. In the circumferential direction, the multiple claw arm ear plate assemblies 4 and the multiple cylinder ear plate assemblies 2 are distributed one by one.

[0059] The use of the detachable claw arm ear plate assembly and the oil cylinder ear plate assembly can extend the service life of the oil cylinder ear plate assembly and the claw arm ear plate assembly.

[0060] When removing the claw arm of the grab device of the prior art, it is necessary to knock out the pin shaft from the claw arm ear plate assembly 4 and the grab, and knock out the corresponding other pin shaft from the cylinder ear plate assembly 2 and the hydraulic drive component. During the above process, the cylinder ear plate assembly 2 and / or the claw arm ear plate assembly 4 are easily deformed or damaged by the force, and thus they may need to be replaced frequently.

[0061] The grab device provided by the utility model includes a connecting pipe 1, a plurality of cylinder ear plate assemblies 2, a claw arm mounting seat 3 and a plurality of claw arm ear plate assemblies 4, wherein the cylinder ear plate assemblies 2 are detachably mounted on the connecting pipe 1 and are distributed at intervals along the circumference of the connecting pipe 1. The hydraulic drive member (not shown in the figure) and the claw arm (not shown in the figure) on the grab device are installed in a one-to-one correspondence, and when the hydraulic drive member drives the claw arm to extend and retract, and drives the plurality of claw arms to move at the same time, the grab device will close or open. Therefore, in the utility model, the number of the claw arm ear plate assemblies 4 and the cylinder ear plate assemblies 2 is the same, and the plurality of claw arm ear plate assemblies 4 and the plurality of cylinder ear plate assemblies 2 are distributed in a one-to-one correspondence.

[0062] When the number of claw arms needs to be changed (such as replacing five claws with three claws, or replacing three claws with five claws), the staff can remove the claw arm ear plate assembly 4 from the claw arm mounting seat 3, remove the cylinder ear plate assembly 2 from the connecting pipe 1, and then remove the claw arm connected to the claw arm ear plate assembly 4 and the hydraulic drive component connected to the cylinder ear plate assembly 2 from the grab device, thereby changing the number of claw arms.

[0063] By adopting the above-mentioned grab device, the number of claw arms on the grab device can be changed relatively easily, which is also beneficial to prolonging the service life of the claw arm ear plate assembly 4 and the cylinder ear plate assembly 2, and improving the stability and durability of the grab device.

[0064] In one embodiment, a first cylindrical cavity (not shown in the figure) is formed inside the connecting pipe 1, and a plurality of first connecting holes (not shown in the figure) are provided on the cavity wall of the first cylindrical cavity. The grab device also includes a plurality of first connecting members (not shown in the figure), and one end of each first connecting member is clamped on the cavity wall of the first cylindrical cavity, and the other end of each first connecting member passes through its corresponding first connecting hole and forms a threaded connection with the cylinder ear plate assembly 2.

[0065] The connecting pipe 1 is a cylindrical structure with a first columnar cavity formed inside. A plurality of first connecting holes are provided on the cavity wall. The plurality of first connecting holes are used to install a first connecting member. The first connecting member is threadedly connected to the cylinder ear plate assembly, and the cylinder ear plate assembly 2 can be locked to the connecting pipe 1.

[0066] When the oil cylinder ear plate assembly 2 needs to be removed, the staff can use a tool to remove the first connecting member from the first columnar cavity. One oil cylinder ear plate assembly 2 may include two oil cylinder ear plates (not shown) arranged in parallel and spaced apart. The above structure can facilitate the removal and installation of the oil cylinder ear plate and extend the service life of the oil cylinder ear plate assembly 2.

[0067] In one embodiment, a second cylindrical cavity (not shown in the figure) is formed inside the claw arm mounting base 3, and a plurality of second connecting holes (not shown in the figure) are provided on the cavity wall of the second cylindrical cavity. The grab device also includes a plurality of second connecting members (not shown in the figure), and one end of each second connecting member is clamped on the cavity wall of the second cylindrical cavity, and the other end of each second connecting member passes through its corresponding second connecting hole and forms a threaded connection with the claw arm ear plate assembly 4.

[0068] The claw arm mounting seat 3 is also a cylindrical structure. A second columnar cavity is formed inside the claw arm mounting seat 3. A plurality of second connecting holes are provided on the cavity wall. The second connecting piece passes through the second connecting hole and is threadedly connected to the claw arm ear plate assembly 4 to lock the claw arm ear plate assembly to the claw arm mounting seat 3.

[0069] A claw arm ear plate assembly 4 may include two claw arm ear plates (not shown) arranged in parallel and spaced apart. When the claw arm ear plate assembly needs to be removed, the staff can use a tool to remove the second connecting member from the second columnar cavity. The above structure can facilitate the disassembly and installation of the claw arm ear plate assembly 4 and extend the service life of the claw arm ear plate assembly 4.

[0070] In a specific embodiment, the first columnar cavity and the second columnar cavity are connected end to end in sequence, and a worker can remove the first connecting member or the second connecting member from the opening of the first columnar cavity or the second columnar cavity with the help of a tool.

[0071] In one embodiment, the grab device further includes: a plurality of claw arms, the plurality of claw arms are mounted on the claw arm ear plate assembly 4 in a one-to-one correspondence; a plurality of hydraulic drive components, the plurality of hydraulic drive components are drivingly connected to the plurality of claw arms in a one-to-one correspondence;

[0072] A first hydraulic oil ring 5 is sleeved on the outer side of the connecting pipe 1 and is provided with a first accommodating chamber (not shown in the figure) inside thereof which can be connected with the hydraulic oil source of the engineering equipment; a plurality of first hydraulic connectors 6 are detachably arranged on the first hydraulic oil ring 5, a first end of the first hydraulic connector 6 is connected with the first accommodating chamber, and a second end of the first hydraulic connector 6 is connected with a first oil inlet (not shown in the figure) of the hydraulic drive component.

[0073] The first hydraulic oil ring 5 can collect and transmit the hydraulic oil transmitted by the hydraulic oil source to the hydraulic drive component. Since the hydraulic oil of each hydraulic drive component comes from the first hydraulic oil ring 5, the hydraulic oil pressure in each hydraulic drive component is equal, so that each claw arm of the grab device is subjected to a uniform driving force, which is convenient for the grab device to perform the grabbing work. In addition, the first hydraulic connector 6 is detachably connected to the first hydraulic oil ring 5. When any of the first hydraulic connectors 6 is damaged, the first hydraulic connector 6 can be replaced to avoid the damage of the first hydraulic connector 6 causing the failure of the entire grab device. Among them, the hydraulic drive component can be a hydraulic cylinder.

[0074] In one embodiment, the grab device also includes: a second hydraulic oil ring 7, which is sleeved on the outer side of the connecting pipe 1 and has a second accommodating chamber (not shown in the figure) inside that can be connected to the hydraulic oil source; a plurality of second hydraulic connectors 8, which are all detachably arranged on the second hydraulic oil ring 7, the first end of the second hydraulic connector 8 is connected to the second accommodating chamber, and the second end of the second hydraulic connector 8 is connected to the first oil outlet (not shown in the figure) of the hydraulic drive component.

[0075] The second hydraulic oil ring 7 can collect the hydraulic oil transmitted by each hydraulic drive component to the hydraulic oil source, and the second hydraulic connector 8 is detachably connected to the second hydraulic oil ring 7. When any second hydraulic connector 8 is damaged, the second hydraulic connector 8 can be replaced to avoid damage to the entire grab device caused by damage to the second hydraulic connector 8.

[0076] In one embodiment, a plurality of second oil outlets (not shown in the figure) are formed on the cavity wall of the first accommodating cavity, and the first end of the first hydraulic connector 6 is connected to the second oil outlets. A plurality of second oil inlets (not shown in the figure) are formed on the cavity wall of the second accommodating cavity, and the first end of the second hydraulic connector 8 is connected to the second oil inlet.

[0077] The grab device also includes: a first sealing member (not shown in the figure), which is detachably arranged on the first hydraulic oil ring 5 and used to seal the second oil outlet in a redundant state; a second sealing member (not shown in the figure) is detachably arranged on the second hydraulic oil ring 7 and used to seal the second oil inlet in a redundant state (not shown in the figure).

[0078] When the claw arm of the grab device is disassembled, the hydraulic drive component needs to be disassembled and the corresponding hydraulic pipeline needs to be blocked. For example, to disassemble the claw arm located in a certain position, the hydraulic drive component in the above position needs to be disassembled, and the hydraulic pipeline connecting the inlet and outlet of the hydraulic drive component needs to be blocked. The second oil inlet in a redundant state is the second oil inlet that is not connected to the hydraulic drive component after the hydraulic drive component is removed; the second oil outlet in a redundant state is the second oil outlet that is not connected to the hydraulic drive component after the hydraulic drive component is removed. The staff can disassemble the second hydraulic connector 8 on the second oil inlet and replace it with the second blocking component to block the second oil inlet. The first hydraulic connector 6 on the second oil outlet can also be disassembled and replaced with the first blocking component to block the second oil outlet.

[0079] In one embodiment, the first blocking member is installed on the first hydraulic connector 6 to block the first hydraulic connector 6. The second blocking member can be installed on the second hydraulic connector 8 to block the second hydraulic connector 8.

[0080] In another embodiment, the grab mechanism further includes: a plurality of claw arms, which are mounted on the claw arm ear plate assembly 4 in a one-to-one correspondence; a plurality of hydraulic driving components, which are drivingly connected to the plurality of claw arms in a one-to-one correspondence; a first hydraulic oil ring 5, which is sleeved on the outer side of the connecting pipe 1 and has a first accommodating chamber that can be connected to the hydraulic oil source of the engineering equipment and a plurality of first switch valves (such as solenoid valves) formed therein, wherein the plurality of first switch valves are all arranged on the first hydraulic oil ring 5, the first end of the first switch valve is connected to the first accommodating chamber, and the second end of the first switch valve is connected to the first oil inlet (not shown in the figure) of the hydraulic driving component. The first hydraulic oil ring 5 can collect the hydraulic oil transmitted by the hydraulic oil source and transmit the hydraulic oil to the hydraulic driving component, because the hydraulic oil of each hydraulic driving component comes from the first hydraulic oil ring 5, the hydraulic oil pressure of each hydraulic driving component is equal, so that each claw arm of the grab device receives a uniform driving force, which is convenient for the grab device to perform the grabbing work. The first switch valve can control the on-off of the oil circuit between the first hydraulic oil ring 5 and the hydraulic driving component, so that the claw arm control of the grab device is more flexible. The hydraulic drive component may be a hydraulic cylinder.

[0081] In another embodiment, the grab mechanism further includes: a second hydraulic oil ring 7, which is sleeved on the outer side of the connecting pipe 1 and has a second accommodating chamber that can be communicated with the hydraulic oil source and a plurality of second switch valves (such as solenoid valves) formed therein, wherein the plurality of second switch valves are all arranged on the second hydraulic oil ring 7, the first end of the second switch valve is communicated with the second accommodating chamber, and the second end of the second switch valve is communicated with the first oil outlet of the hydraulic drive. The second switch valve can control the on-off of the oil circuit between the second hydraulic oil ring 7 and the hydraulic drive.

[0082] In one embodiment, the grab device further includes: a grab mounting plate 9, which is arranged at the first end of the connecting pipe 1; and a grab ear plate assembly 10, which is arranged on the side end surface of the grab mounting plate 9 away from the connecting pipe 1 and is detachably connected to the mechanical arm.

[0083] The arrangement of the grab bucket mounting plate 9 and the grab bucket ear plate assembly 10 enables the grab bucket device to be mounted on the mechanical arm of the engineering equipment, and the mechanical arm of the engineering equipment drives the grab bucket device to move.

[0084] In one embodiment, the grab bucket mounting plate 9 is detachably connected to the first end of the connecting pipe 1 .

[0085] When it is necessary to replace the claw arm of other types, the connecting pipe 1 and the grab bucket mounting plate 9 can be directly removed, and the claw arm, the connecting pipe 1, the hydraulic drive component, the claw arm mounting seat 3 and the like can be replaced as a whole.

[0086] In one embodiment, Figure 2 As shown, it is a front view schematic diagram of the first sleeve 11 provided according to an embodiment of the utility model; Figure 3 , which is a schematic side view of a first sleeve 11 provided according to an embodiment of the utility model. Figure 3 The arrow in represents the axial direction of the first sleeve.

[0087] The grab lug plate assembly 10 includes a first grab lug plate 101 and a second grab lug plate 102 which are arranged in parallel and at intervals. An installation space for installing a mechanical arm is formed between the first grab lug plate 101 and the second grab lug plate 102. The first grab lug plate 101 and the second grab lug plate 102 are respectively formed with a first installation hole and a second installation hole. The mechanical arm includes a pin shaft which transversely penetrates the first grab lug plate 101, the installation portion of the mechanical arm and the second grab lug plate 102.

[0088] The grab device also includes: a sleeve assembly, including a first sleeve 11 and a second sleeve, the first sleeve 11 is sleeved on the outer peripheral side of the first end of the pin shaft and is detachably installed in the first mounting hole, and the second sleeve is sleeved on the outer peripheral side of the second end of the pin shaft and is detachably installed in the second mounting hole.

[0089] The grab lug assembly 10 includes a first grab lug 101 and a second grab lug 102 which are spaced apart in parallel. The pin can sequentially pass through the first grab lug 101, the mounting portion of the mechanical arm, and the second grab lug 102 to drive the grab device to move.

[0090] Because the pins of different mechanical arms are of different sizes, in order to adapt to pins of different sizes, the grab device of the utility model also includes a sleeve assembly, and the sleeve assembly includes a first sleeve 11 and a second sleeve. When the pin of the mounting portion of the mechanical arm is small, the setting of the mounting sleeve assembly makes the grab lug assembly 10 indirectly contact the pin, and the pin of the mechanical arm passes through the first sleeve 11, the mounting portion of the mechanical arm, and the second sleeve in sequence, and the pin is in close contact with the above three components, with high stability.

[0091] The first sleeve 11 may include a sleeve portion 111 and a connecting portion 112. The sleeve portion 111 is inserted between the connecting shaft (pin shaft) and the first grab lug plate 101. The connecting portion 112 is located at the end of the sleeve portion 111 in the axial direction. The connecting portion 112 is detachably connected to the first grab lug plate 101. The inner diameters of the sleeve portions 111 of different types of first sleeves 11 are different to adapt to connecting shafts of different thicknesses. When the sleeve assembly needs to be installed, the staff sleeves the first sleeve 11 on the first end of the connecting shaft, and the connecting portion 112 of the first sleeve 11 is detachably connected to the first grab lug plate 101, and the second sleeve is sleeved on the second end of the connecting shaft. And the connecting portion 112 of the second sleeve is detachably connected to the second grab lug plate 102.

[0092] By adopting the above-mentioned sleeve assembly, the same grab device can be adapted to a variety of different robot arm pins, making the application scenarios of the grab device more extensive.

[0093] The grab device for engineering equipment provided by the utility model can change the number of claw arms of the grab device by removing the claw arm ear plate assembly 4 and the cylinder ear plate assembly 2. The claw arm ear plate assembly 4 and the cylinder ear plate assembly 2 that are detachably connected have a longer service life and a more stable structure. In addition, the first hydraulic connector 6 of the utility model embodiment is detachably connected to the first hydraulic oil ring 5, and the second hydraulic connector 8 is detachably connected to the second hydraulic oil ring 7. When any of the first hydraulic connector 6 or the second hydraulic connector 8 is damaged, the damaged first hydraulic connector 6 or the second hydraulic can be replaced, saving equipment costs. The grab device of the utility model embodiment includes a sleeve assembly, so that the grab device can be adapted to a variety of different mechanical arm mounting parts, making the application range of the grab device wider.

[0094] In addition, the utility model also provides an engineering equipment, comprising a grab bucket device as described in any one of the above items.

[0095] The beneficial effect of adopting the technical solution of the utility model is as follows: by arranging the cylinder ear plate assembly and the connecting pipe as a detachable connection, and arranging the claw arm ear plate assembly and the claw arm mounting seat as a detachable connection, when it is necessary to change the number of claw arms, the claw arm ear plate assembly and the claw arm are disassembled together, and the hydraulic telescopic part and the cylinder ear plate assembly are disassembled together, and the number of claw arms of the grab device is changed by removing the claw arm ear plate assembly and the cylinder ear plate assembly, which facilitates the change of the number of claw arms, can extend the service life of the cylinder ear plate and the claw arm ear plate, and improves the stability and durability of the grab device.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A grab bucket device, characterized in that: include: A connecting pipe, multiple cylinder ear plate assemblies, a claw arm mounting seat, and multiple claw arm ear plate assemblies. The first end of the connecting pipe is used to connect to the mechanical arm of the engineering equipment. The multiple cylinder ear plate assemblies can be detachably mounted on the connecting pipe. The claw arm mounting seat is mounted on the second end of the connecting pipe. The multiple claw arm ear plate assemblies can be detachably mounted on the claw arm mounting seat. The multiple cylinder ear plate assemblies and the multiple claw arm ear plate assemblies are arranged one by one in the axial direction of the connecting pipe.

2. A grab bucket device according to claim 1, characterized in that: A plurality of the cylinder ear plate assemblies are circumferentially spaced apart along the outer side wall of the connecting pipe, and a plurality of the claw arm ear plate assemblies are circumferentially spaced apart along the outer side wall of the claw arm mounting seat, and the number of the cylinder ear plate assemblies is the same as the number of the claw arm ear plate assemblies.

3. A grab bucket device according to claim 1, characterized in that: A hydraulic driving component is installed on the oil cylinder ear plate assembly, a claw arm is installed on the claw arm ear plate assembly, and the hydraulic driving component is connected to the claw arm.

4. A grab bucket device according to claim 1, characterized in that: The cylinder ear plate assembly includes a pair of cylinder ear plates arranged in parallel and at intervals, and the claw arm ear plate assembly includes a pair of claw arm ear plates arranged in parallel and at intervals; the connecting pipe and the claw arm mounting seat are both cylindrical structures.

5. A grab bucket device according to claim 1, characterized in that: A first columnar cavity and a plurality of first connecting members are provided inside the connecting pipe, a plurality of first connecting holes are provided on the cavity wall of the first columnar cavity, one ends of the plurality of first connecting members are connected to the cavity wall of the first columnar cavity, and the other ends of the plurality of first connecting members pass through the plurality of first connecting holes one by one and are threadedly connected to the plurality of cylinder ear plate assemblies; a second columnar cavity and a plurality of second connecting members are provided inside the claw arm mounting seat, a plurality of second connecting holes are provided on the cavity wall of the second columnar cavity, one ends of the plurality of second connecting members are connected to the cavity wall of the second columnar cavity, and the other ends of the plurality of second connecting members pass through the plurality of second connecting holes one by one and are threadedly connected to the plurality of claw arm ear plate assemblies; The first columnar cavity is communicated with the second columnar cavity.

6. A grab bucket device according to claim 1, characterized in that: The outer side of the connecting pipe is sleeved with a first hydraulic oil ring and a second hydraulic oil ring, the interior of the first hydraulic oil ring is provided with a first accommodating chamber for communicating with a hydraulic oil source of engineering equipment, a plurality of first hydraulic joints are detachably mounted on the first hydraulic oil ring, a first end of the first hydraulic joint is communicated with the first accommodating chamber, and a second end of the first hydraulic joint is used to communicate with a first oil inlet of the hydraulic drive component; the interior of the second hydraulic oil ring is provided with a second accommodating chamber for communicating with a hydraulic oil source of engineering equipment, a plurality of second hydraulic joints are detachably mounted on the second hydraulic oil ring, a first end of the second hydraulic joint is communicated with the second accommodating chamber, and a second end of the second hydraulic joint is used to communicate with a first oil outlet of the hydraulic drive component.

7. A grab bucket device according to claim 6, characterized in that: A plurality of second oil outlets are provided on the cavity wall of the first accommodating cavity, and the first ends of the plurality of first hydraulic connectors are connected to the plurality of second oil outlets in a one-to-one correspondence; a plurality of second oil inlets are provided on the cavity wall of the second accommodating cavity, and the first ends of the plurality of second hydraulic connectors are connected to the plurality of second oil inlets in a one-to-one correspondence; a first switch valve is provided on the first hydraulic oil ring, and the first end of the first switch valve is connected to the first accommodating cavity, and the second end of the first switch valve is connected to the first oil inlet of the hydraulic drive component; a second switch valve is provided on the second hydraulic oil ring, and the first end of the second switch valve is connected to the second accommodating cavity, and the second end of the second switch valve is connected to the first oil outlet of the hydraulic drive component.

8. A grab bucket device according to claim 7, characterized in that: The second oil outlet is detachably provided with a first blocking member, and the second oil inlet is detachably provided with a second blocking member. Alternatively, a first blocking piece is detachably provided on the first hydraulic joint, and a second blocking piece is detachably provided on the second hydraulic joint.

9. A grab bucket device according to claim 1, characterized in that: A grab bucket mounting plate is detachably mounted on the first end of the connecting pipe, and a grab bucket ear plate assembly for detachably connecting to a mechanical arm is mounted on the grab bucket mounting plate.

10. An engineering equipment, characterized in that: A grab bucket device comprising any one of claims 1 to 9.

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