Pin dismounting equipment

Abstract

The utility model provides a pin dismounting device, which is used for dismounting a pin shaft of engineering machinery, and comprises a pin dismounting rod, a pin shaft connecting rod, a pin shaft connecting rod, a pin shaft connecting rod, a pin shaft connecting rod and a pin shaft connecting rod, the hollow telescopic structure is arranged outside the pin dismounting rod in a sleeving mode, the hollow telescopic structure comprises a fixing sleeve and a telescopic sleeve installed on the fixing sleeve, the telescopic sleeve can do reciprocating motion between an initial position and an extending position relative to the fixing sleeve in the axial direction of the pin shaft, and the telescopic sleeve is used for abutting against and driving the abutting plate to move; the attaching plate is connected with the fixing sleeve and used for being attached to the engineering machine. The pin disassembling equipment is not limited by the structure of the engineering machinery, can be disassembled at different positions of the engineering machinery at will, does not need a special installation position of the engineering machinery, and greatly improves the pin disassembling convenience; and the specifications of the pin shafts are not limited, all pin shafts in the market can be adapted by replacing the adaptive attaching plates, and the situation that flame gas cutting is needed due to the fact that the pin shafts cannot be detached can be avoided.

Description

Technical Field

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

[0002] In current construction machinery, such as tower cranes, the pin is a key component of each tower crane and plays a core fixing role in the entire tower crane. If the pin cannot be driven out, the entire tower crane will be unable to be disassembled. At this stage, when the pin cannot be driven out, flame cutting is the only option.

[0003] The traditional flame gas cutting method has many shortcomings, such as: due to limited conditions, gas cutting is too dangerous, and flame cutting is not allowed in some sites. It will cause the pin shaft to be unusable for a second time, cause cuts to the standard section during cutting, and there is a potential risk of explosion, which can easily cause loss of life or property.

[0004] Existing pin pulling equipment requires a large installation area on the tower crane structure, which is inconvenient to install and not very convenient to use. Moreover, each pin pulling equipment can only remove a corresponding type of pin shaft separately, and cannot be used on multiple pin shaft types and multiple tower crane structures. It is easy for the pin shaft to be unable to be removed and requires flame cutting. Utility Model Content

[0005] The main purpose of the utility model is to provide a pin removal device, aiming to solve the technical problems in the prior art that the pin removal device is inconvenient to install and cannot be adapted to a variety of pin shafts.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a pin dismantling device, which is used to dismantle the pin shaft of engineering machinery. The pin dismantling device includes: a pin dismantling rod, one end of which is used to connect with the pin shaft, and the other end is connected with a support plate; a hollow telescopic structure, which is sleeved outside the pin dismantling rod, and the hollow telescopic structure includes a fixed sleeve and a telescopic sleeve installed on the fixed sleeve, the telescopic sleeve can reciprocate between an initial position and an extended position relative to the fixed sleeve along the axial direction of the pin shaft, and the telescopic sleeve is used to abut and drive the support plate to move; a bonding plate, which is connected to the fixed sleeve and is used to bond with the engineering machinery.

[0007] In an embodiment of the utility model, the pin removal device further comprises an adjusting pad movably sleeved outside the pin removal rod, and the telescopic sleeve abuts against the abutting plate through the adjusting pad.

[0008] In an embodiment of the utility model, the adjusting pad is provided with an inserting groove for the pin removal rod to extend into, and the lower end of the inserting groove is provided with an inserting opening for avoiding the pin removal rod.

[0009] The adjusting pad is also provided with a pin hole, and the pin hole is used for detachably connecting with the telescopic sleeve through a latch pin.

[0010] In an embodiment of the utility model, the pin removal rod includes a main body and a flat portion, the main body is connected between the abutment plate and the flat portion, and the flat portion is provided with a welding groove for welding to the pin shaft.

[0011] In an embodiment of the utility model, the cross-sectional dimensions of the flat portion and the abutment plate are both larger than the cross-sectional dimension of the main body portion.

[0012] In an embodiment of the utility model, the hollow telescopic structure is a hydraulic hollow cylinder, and the pin removal device further comprises a power module for providing hydraulic oil to the hollow telescopic structure.

[0013] In an embodiment of the utility model, the power module includes: an oil tank for storing hydraulic oil; a motor installed on the oil tank, the motor is used to pump oil to the hollow telescopic structure by driving a hydraulic pump; an integrated valve group installed on the oil tank, the integrated valve group is provided with an operating lever for switching the oil circuit of the integrated valve group, so that the integrated valve group supplies oil to the oil inlet or oil outlet of the hollow telescopic structure, so that the hollow telescopic structure can perform a telescopic action under the action of the hydraulic oil.

[0014] In an embodiment of the utility model, the integrated valve group further includes a relief valve for adjusting the oil circuit pressure of the power module.

[0015] In the embodiment of the utility model, an electrical connection box is installed outside the housing of the motor.

[0016] Through the above technical solution, the dismantling device provided by the embodiment of the utility model has the following beneficial effects:

[0017] When using pin removal equipment to remove the pin shaft, the pin shaft of the pin removal rod can be fixedly connected first, and welding or other connection methods can be used. Then the fixed sleeve and the bonding plate of the hollow telescopic structure can be connected. The fixed sleeve and the bonding plate can be connected by bolts, screws and other components. The sleeve of the hollow telescopic structure is arranged on the outside of the pin removal rod, and the bonding plate is bonded with the main chord of the standard section of the tower crane. The telescopic sleeve of the hollow telescopic structure can perform telescopic movement relative to the fixed sleeve, and reciprocate between the initial position and the extended position. The telescopic sleeve can drive the pin removal rod by abutting the abutment plate, thereby driving the pin shaft to move outward relative to the engineering machinery, and the pin removal can be achieved. The pin removal device in the utility model does not need to be connected or installed with the engineering machinery. It only needs to fit the bonding plate and the engineering machinery. It is not restricted by the structure of the engineering machinery and can be disassembled at different positions of the engineering machinery at will. No special engineering machinery installation position is required, and the pin shaft can be freely disassembled, which greatly improves the convenience of pin removal. Moreover, the pin shaft specifications are not limited. By replacing the matching bonding plate, it can be adapted to all pin shafts on the market, which can avoid the situation where the pin shaft cannot be removed and needs flame cutting, reduces the safety risk of pin removal, and does not need to replace other structures, so the cost of pin removal is low.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a dismantling device in one state according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a dismantling device in another state according to an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the dismantling device in another state according to one embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the dismantling device in another state according to one embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a hollow telescopic structure of a dismantling device in one embodiment of the utility model in one state;

[0025] Figure 6 It is a structural schematic diagram of the hollow telescopic structure of the dismantling device in another state according to one embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the power module structure of the dismantling device according to one embodiment of the utility model;

[0027] Figure 8 It is a schematic diagram of the connection structure between the pin removal rod and the pin shaft of the pin removal device according to one embodiment of the utility model;

[0028] Fig. 9 It is a schematic diagram of the structure of a pin removal rod of a pin removal device according to one embodiment of the utility model;

[0029] Fig.10 It is a schematic diagram of the structure of the adjusting pad of the dismantling device according to one embodiment of the utility model;

[0030] Fig.11 A schematic diagram of the bonding plate structure of a dismantling device according to an embodiment of the utility model;

[0031] Fig.12 A schematic structural diagram of the cooperation between the pin removal rod and the pin shaft of the pin removal device according to another embodiment of the utility model;

[0032] Fig.13 A schematic diagram of the structure of a pin removal rod of a pin removal device according to another embodiment of the utility model.

[0033] Description of Reference Numerals

[0034] Label Name Label Name

[0035] 100 Pin removal equipment 42 Middle hole

[0036] 1 Remove the pin rod 43 First connection hole

[0037] 11 Main body 5 Adjustment pad

[0038] 12 flat part 51 plug-in slot

[0039] 121 welding groove 52 second connection hole

[0040] 13 Main section 6 Power module

[0041] 14 Transition section 61 Fuel tank

[0042] 15 Threaded section 611 Handle

[0043] 16 Guide segment 62 Motor

[0044] 2 Plate 63 Integrated valve group

[0045] 3 Hollow telescopic structure 631 operating rod

[0046] 31 Fixed sleeve 632 Relief valve pressure regulating port

[0047] 32 Telescopic sleeve 633 Oil port

[0048] 33 Oil inlet 64 Electrical box

[0049] 34 Oil outlet 200 Pin

[0050] 4 Lamination plate 210 threaded hole

[0051] 41 Fitting groove 300 Main chord DETAILED DESCRIPTION

[0052] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] The pin removal device according to the present utility model is described below with reference to the accompanying drawings.

[0054] like Figures 1 to 11 As shown, in an embodiment of the utility model, a pin removal device 100 is used to remove a pin shaft 200 of an engineering machinery. The pin removal device 100 includes a pin removal rod 1, a hollow telescopic structure 3 and a bonding plate 4. One end of the pin removal rod 1 is used to connect with the pin shaft 200, and the other end is connected with a support plate 2; the hollow telescopic structure 3 is sleeved outside the pin removal rod 1, and the hollow telescopic structure 3 includes a fixed sleeve 31 and a telescopic sleeve 32 installed on the fixed sleeve 31. The telescopic sleeve 32 can reciprocate between an initial position and an extended position relative to the fixed sleeve 31 along the axial direction of the pin shaft 200, and the telescopic sleeve 32 is used to abut and drive the support plate 2 to move; the bonding plate 4 is connected to the fixed sleeve 31 and is used to fit with the engineering machinery.

[0055] It can be understood that the pin removal device 100 in this embodiment is mainly used for disassembling the pin shaft 200 of a tower crane. In one embodiment, the engineering machinery is a tower crane, and the bonding plate 4 is arranged corresponding to the main chord rod 300, and the pin shaft 200 on the tower crane is installed on the main chord rod 300. In other embodiments, the bonding plate 4 is arranged corresponding to the mounting component of the pin shaft 200, and a flange plate can be used. The abutment plate 2 and the pin removal rod 1 can be integrally formed, which can improve the structural strength of the pin device. The hollow telescopic structure 3 can adopt a telescopic cylinder or other telescopic hollow structure.

[0056] When the pin removal device 100 in this embodiment is used to remove the pin shaft 200, the pin removal rod 1 and the pin shaft 200 can be fixedly connected first, and welding or other connection methods can be used. Then, the fixed sleeve 31 of the hollow telescopic structure 3 and the bonding plate 4 are connected. The fixed sleeve 31 and the bonding plate 4 can be connected by bolts, screws and other components. The sleeve of the hollow telescopic structure 3 is arranged on the outside of the pin removal rod 1. The bonding plate 4 is bonded with the main chord 300 of the standard section of the tower crane. The telescopic sleeve 32 of the hollow telescopic structure 3 can perform telescopic movement relative to the fixed sleeve 31, and reciprocate between the initial position and the extended position. The telescopic sleeve 32 can drive the pin removal rod 1 by abutting the abutment plate 2, thereby driving the pin shaft 200 to move outward relative to the engineering machinery, and the pin removal can be achieved. The pin removal device 100 in this embodiment does not need to be connected or installed with the engineering machinery. It only needs to fit the bonding plate 4 and the engineering machinery. It is not restricted by the structure of the engineering machinery and can be disassembled at different positions of the engineering machinery at will. No specific engineering machinery installation position is required, and the pin shaft 200 can be freely disassembled, which greatly improves the convenience of pin removal. Moreover, the specifications of the pin shaft 200 are not limited. By replacing the matching bonding plate 4, it can be adapted to all the pin shafts 200 on the market, which can avoid the situation where the pin shaft 200 cannot be removed and needs flame cutting, thereby reducing the safety risk of pin removal. There is no need to replace other structures, and the cost of pin removal is low.

[0057] like Figures 2 to 5 As shown, the pin removal device 100 also includes an adjusting pad 5 movably sleeved outside the pin removal rod 1, and the telescopic sleeve 32 abuts against the plate 2 through the adjusting pad 5. The number of adjusting pads 5 can be several. In one embodiment, the plurality of adjusting pads 5 have different specifications, the same appearance and different thicknesses, and the thicknesses are 10mm, 20mm, and 50mm respectively. Through the three different thicknesses, all different thickness sizes can be combined to facilitate the pin removal operation; when the extension stroke of the hollow telescopic structure 3 is reached, and the pin shaft 200 has not been completely removed, the telescopic sleeve 32 can be moved to the initial position, and adjusting pads 5 of different specifications and numbers are added between the hollow telescopic structure 3 and the plate 2, and then the telescopic sleeve 32 is extended, so that the purpose of dismantling the pin shaft 200 can be achieved. In this embodiment, by movably plugging the adjusting pad 5 outside the pin removal rod 1, the pin shaft 200 of various lengths can be dismantled without replacing the hollow telescopic structure 3, and the disassembly cost is low. The adjusting pad 5 can adopt a flat structure

[0058] In one embodiment, the adjustment pad 5 is provided with a plug-in slot 51 for the pin removal rod 1 to extend into, and the lower end of the plug-in slot 51 is provided with a plug-in opening to avoid the pin removal rod 1. The lower end of the adjustment pad 5 in this embodiment is half-opened, which can ensure that the adjustment pad 5 can be quickly replaced while ensuring that the adjustment pad 5 will not fall off in the vertical direction. The upper end of the adjustment pad 5 is provided with a pin hole 52, and a pin can be inserted into the pin hole 52 after all the adjustment pads 5 are installed to ensure that the adjustment pad 5 will not fall off. Fig.10As shown, the upper end of the plug-in groove 51 in this embodiment is a semicircular groove, and the lower end is a rectangular groove with a plug-in opening, which can facilitate the cooperation between the pin removal rod 1 and the adjustment pad 5 while preventing the pin removal rod 1 and the adjustment pad 5 from detaching.

[0059] Specifically, the pin removal rod 1 includes a main body 11 and a flat portion 12. The main body 11 is connected between the abutment plate 2 and the flat portion 12. The flat portion 12 is provided with a welding groove 121 for welding with the pin shaft 200. Fig. 9 As shown, the main body 11 in this embodiment can be a columnar rod, the flat portion 12 can be a sheet plate, and the welding groove 121 is arranged at the end of the flat portion 12 away from the main body 11 to ensure that there is sufficient width to ensure the welding area and to ensure the pulling force requirement for disassembling the pin shaft 200; in other embodiments, the flat portion 12 and the pin shaft 200 can be connected by other connection methods.

[0060] It should be noted that the cross-sectional dimensions of the flat portion 12 and the abutment plate 2 are both larger than the cross-sectional dimensions of the main body 11. The pin removal rod 1 in this embodiment is designed to be small in the middle and large at both ends, and the bottom flat portion 12 is designed with a welding groove 121, which is combined with a small circle design in the middle, so that the weight of the pin removal rod 1 can be reduced as much as possible when the force meets the requirements; the abutment plate 2 with a columnar design at the top can ensure that the top can pass through the hollow telescopic structure, and can also ensure that there is enough contact surface tension between the abutment plate 2 and the telescopic sleeve 32.

[0061] like Fig.12 and Fig.13 As shown, in another embodiment, a threaded hole 210 with an internal thread is provided on the pin shaft 200, and the pin removal rod 1 includes a main section 13, a transition section 14, a threaded section 15 and a guide section 16 which are sequentially connected to the abutment plate 2, the cross-sectional size of the transition section 14 gradually decreases from the main section 13 to the direction of the threaded section 15, and the transition section 14 can be truncated cone-shaped, the cross-sectional size of the main section 13 is larger than the cross-sectional size of the threaded section 15, which can ensure that the pin removal rod 1 has a higher force-bearing performance, and the threaded section 15 is provided with an internal thread adapted to the external thread, and the cross-sectional size of the guide section 16 gradually decreases from the threaded section 15 to the free end, and the guide section 16 can be inverted truncated cone shape, which can facilitate the threaded section 15 to extend into the threaded hole 210, and finally, the structural state of the pin removal rod 1 and the pin shaft 200 after matching is as shown in FIG. Fig.12 As shown, there is no need to weld the pin shaft 200 and the pin removal rod 1, which is more convenient and quick, and the pin removal rod 1 will not be cut off and the threaded pin shaft 200 will not be damaged.

[0062] Specifically, the bonding plate 4 is bonded to the main chord 300 of the tower crane standard section through the bonding groove 41. The number of the bonding grooves 41 is at least two, and at least two bonding grooves 41 are used to adapt to different engineering machinery. At least two bonding grooves 41 are cross-arranged. Fig.11As shown, in one embodiment, there are two fitting grooves 41, one of which is a horizontal groove and the other is a vertical groove. When adapting to the main chord 300 of different tower cranes, it is only necessary to rotate the fitting plate 4 to adapt the corresponding fitting groove 41 and the main chord 300, and a middle hole 42 is opened at the intersection of the fitting groove 41, and the pin removal rod 1 can pass through the middle hole 42. Connecting holes 43 are opened at the corners of the fitting plate 4, and the connecting holes 43 can be connected to the fixing sleeve 31 by bolts, screws, etc.

[0063] In one embodiment, the hollow telescopic structure 3 is a hydraulic hollow oil cylinder, and the dismantling device 100 further includes a power module 6 for providing hydraulic oil to the hollow telescopic structure 3. The hollow telescopic structure 3 in this embodiment is a hydraulic hollow oil cylinder, and the pin shaft 200 can be inserted into the hollow telescopic structure 3 for dismantling. The hydraulic hollow oil cylinder has a high pressure and a large pin pulling force, and the maximum pressure reaches 100 MPa, and the dismantling effect is good. The maximum oil circuit pressure of this power module 6 is 70 MPa. To ensure safe operation, in one embodiment, the oil circuit pressure of the power module 6 is set to 40 MPa.

[0064] In the embodiment of the utility model, the power module 6 includes an oil tank 61, a motor 62 and an integrated valve group 63. The oil tank 61 is used to store hydraulic oil; the motor 62 is installed on the oil tank 61, and the motor 62 is used to pump oil to the hollow telescopic structure 3 by driving the hydraulic pump; the integrated valve group 63 is installed on the oil tank 61, and the integrated valve group 63 is provided with an operating lever 631 for switching the oil circuit of the integrated valve group 63, so that the integrated valve group 63 supplies oil to the oil inlet 33 or the oil outlet 34 of the hollow telescopic structure 3, so that the hollow telescopic structure 3 can perform a telescopic action under the action of the hydraulic oil.

[0065] like Figure 7 As shown, the hydraulic oil of the power module 6 is stored in the oil tank 61. In one embodiment, the oil tank 61 can be filled with 20L of hydraulic oil to meet the use of all hydraulic oil. The hydraulic oil drives the hydraulic pump through the motor 62, so that the hydraulic oil passes through the integrated valve group 63 and then enters the hydraulic hollow cylinder through the oil port 633 and the oil pipe of the integrated valve group 63, thereby causing the hydraulic hollow cylinder to operate. By operating the operating lever 631 left and right, the oil inlet and outlet oil circuits are switched.

[0066] In one embodiment, the integrated valve group 63 also includes a relief valve for adjusting the oil circuit pressure of the power module 6. The relief valve pressure regulating port 632 corresponds to the relief valve setting. In one embodiment, the relief valve can be adjusted by adjusting the hexagon socket to adjust the oil circuit pressure of the power module 6, which can ensure safe operation and avoid excessive or insufficient pressure. It should be noted that a power connection box 64 is installed outside the housing of the motor 62. The power connection box 64 in this embodiment is external, external to the motor 62, and can be freely wired. The 380V voltage can meet the electricity requirements of the construction site. A handle 611 is installed on the oil tank 61. The handle 611 is a hard plastic part that can be easily lifted and placed manually.

[0067] In one embodiment, when the pin removal device 100 is used to remove the pin shaft 200:

[0068] The pin removal rod 1 is welded and fixed to the pin shaft 200;

[0069] The hydraulic hollow cylinder is connected to the bonding plate 4 by bolts, and the hydraulic hollow cylinder is passed through the outside of the pin removal rod 1, and the bonding plate 4 is bonded to the main chord rod 300 of the tower crane standard section;

[0070] Use adjusting pads 5 of different specifications and quantities between the pin removal rod 1 and the hydraulic hollow cylinder;

[0071] The oil inlet 33 of the hydraulic hollow oil cylinder enters the oil, and the oil outlet 34 discharges the oil, which pushes the oil cylinder piston rod to move, drives the pin removal rod 1, and thus drives the pin shaft 200 to move outward;

[0072] When the cylinder stroke is reached, oil enters the oil outlet 34 of the hydraulic hollow cylinder, oil exits the oil inlet 33, and the cylinder piston rod moves in the opposite direction and shrinks to the initial position;

[0073] Add different specifications and quantity of adjustable spacer plates between the pin removal rod 1 and the hydraulic hollow cylinder, and repeatedly supply oil until the pin shaft 200 is removed, thereby achieving the purpose of removing the pin shaft 200.

[0074] In this embodiment, the oil cylinder piston rod moves by the oil inlet and outlet method, thereby driving the pin shaft 200 to move. After the oil is introduced through the oil outlet 34 of the hydraulic hollow oil cylinder, the oil cylinder retracts, and the adjusting pad 5 is added. The pin shaft 200 is disassembled by repeating the oil supply. It is not limited by the structure of the tower crane, and can be disassembled at different positions of the tower crane at will. There is no need for a specific tower crane installation position, and the pin shaft 200 can be freely disassembled; Figure 1 The hydraulic hollow cylinder is in the initial state, and no adjusting pad 5 is provided between the hollow telescopic structure 3 and the abutment plate 2. Figure 2 The hollow telescopic structure 3 is in the initial state, and four adjustment pads 5 are arranged between the hollow telescopic structure 3 and the abutment plate 2.

[0075] Figure 3 The hollow telescopic structure 3 is in an extended state, and four adjustment pads 5 are arranged between the hollow telescopic structure 3 and the abutment plate 2. Figure 4 The hollow telescopic structure 3 is in an initial state, and six adjustment pads 5 are arranged between the hollow telescopic structure 3 and the abutment plate 2. Figure 5 The hollow telescopic structure 3 is in the initial state. Figure 6 The hollow telescopic structure 3 is in an extended state.

[0076] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pin removal device for removing a pin shaft (200) of an engineering machinery, characterized in that: The dismantling device (100) comprises: A pin removal rod (1), one end of which is used to be connected to the pin shaft (200), and the other end of which is connected to a stop plate (2); A hollow telescopic structure (3) is sleeved outside the pin removal rod (1), the hollow telescopic structure (3) comprises a fixed sleeve (31) and a telescopic sleeve (32) mounted on the fixed sleeve (31), the telescopic sleeve (32) can reciprocate between an initial position and an extended position relative to the fixed sleeve (31) along the axial direction of the pin shaft (200), and the telescopic sleeve (32) is used to abut against and drive the abutment plate (2) to move; The laminating plate (4) is connected to the fixing sleeve (31) and is used to be laminated with the engineering machinery.

2. The pin removal device according to claim 1, characterized in that: The pin removal device (100) further comprises an adjustment pad (5) movably sleeved outside the pin removal rod (1), and the telescopic sleeve (32) abuts against the abutment plate (2) via the adjustment pad (5).

3. The pin removal device according to claim 2, characterized in that: The adjusting pad (5) is provided with an inserting groove (51) for the pin removal rod (1) to extend into, and the lower end of the inserting groove (51) is provided with an inserting opening for avoiding the pin removal rod (1).

4. The pin removal device according to claim 2, characterized in that: The adjusting pad is also provided with a pin hole (52), and the pin hole (52) is used for detachably connecting with the telescopic sleeve (32) via a latch pin.

5. The pin removal device according to claim 1, characterized in that: The pin removal rod (1) comprises a main body (11) and a flat portion (12); the main body (11) is connected between the abutment plate (2) and the flat portion (12); and the flat portion (12) is provided with a welding groove (121) for welding to the pin shaft (200).

6. The pin removal device according to claim 5, characterized in that: The cross-sectional dimensions of the flat portion (12) and the abutment plate (2) are both greater than the cross-sectional dimensions of the main body portion (11).

7. The pin removal device according to any one of claims 1 to 6, characterized in that: The hollow telescopic structure (3) is a hydraulic hollow oil cylinder, and the pin removal device (100) further comprises a power module (6) for providing hydraulic oil to the hollow telescopic structure (3).

8. The pin removal device according to claim 7, characterized in that: The power module (6) comprises: An oil tank (61) for storing hydraulic oil; A motor (62) is mounted on the oil tank (61), and the motor (62) is used to drive a hydraulic pump to pump oil to the hollow telescopic structure (3); An integrated valve group (63) is mounted on the oil tank (61). An operating lever (631) for switching the oil circuit of the integrated valve group (63) is provided on the integrated valve group (63), so that the integrated valve group (63) supplies oil to the oil inlet (33) or the oil outlet (34) of the hollow telescopic structure (3), so that the hollow telescopic structure (3) performs a telescopic action under the action of the hydraulic oil.

9. The pin removal device according to claim 8, characterized in that: The integrated valve group (63) also includes a relief valve for adjusting the oil circuit pressure of the power module (6).

10. The pin removal device according to claim 8, characterized in that: An electrical connection box (64) is installed outside the housing of the motor (62).

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