Double-lock connector, excavator and construction machine

Abstract

The present application relates to a double-lock connector, an excavator and a construction machine. The double-lock connector comprises a connecting body, a first locking assembly comprising a first lock body provided on the connecting body, the first lock body comprising a first lock hook, the first lock body being rotatably arranged relative to the connecting body to lock or release a first to-be-locked member, and a second locking assembly comprising a second lock body provided on the connecting body and a second lock hook configured to lock a second to-be-locked member, the second lock body being rotatably arranged relative to the second lock hook to switch between a first working position and a second working position, the second lock body being configured to limit the disengagement of the second to-be-locked member from the second lock hook in the first working position, and the second lock body being configured to release the limitation of the second to-be-locked member from the second lock hook in the second working position. The first lock hook, the second lock hook and the second lock body cooperate to lock the to-be-locked members, thereby improving the safety and reliability of the double-lock connector.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering machinery, and in particular to a double-lock connector, an excavator and engineering machinery. BACKGROUND

[0002] The double-lock connector (also known as a quick-change adapter) is one of the important accessories of the working device of an excavator, and can be used for quick connection and separation of various auxiliary devices such as a common bucket, a tilting bucket, a ripper, a breaking hammer, a vibrating tamper, and a hydraulic shear, so as to meet the requirements of multi-functional and multi-task working conditions of the excavator and improve the added value of the main machine.

[0003] The double-lock connector has various structural forms, and is mainly divided into a mechanical type and a hydraulic type. When the mechanical double-lock connector is replaced with an auxiliary device, the installation or dismounting of a safety pin and other components still needs to be manually completed, and the efficiency is relatively low. The hydraulic double-lock connector is driven to move by the pressure provided by a hydraulic system to complete the replacement of the auxiliary device. If an unexpected condition such as failure or misoperation of the hydraulic system occurs, the auxiliary device has a risk of falling. SUMMARY

[0004] Some embodiments of the present application provide a double-lock connector, an excavator and engineering machinery, which are used to alleviate the problem of safety hazards.

[0005] In one aspect of the present application, a double-lock connector is provided, comprising:

[0006] a connecting body;

[0007] a first locking assembly comprising a first lock body provided on the connecting body, the first lock body comprising a first lock hook, the first lock body being rotatably arranged relative to the connecting body to lock or release a first to-be-locked member by the first lock hook; and

[0008] a second locking assembly comprising a second lock body and a second lock hook provided on the connecting body, the second lock hook being configured to lock a second to-be-locked member, the second lock body being rotatably arranged relative to the second lock hook to switch between a first working position and a second working position, the second lock body being configured to limit the disengagement of the second to-be-locked member from the second lock hook in the first working position, and the second lock body being configured to release the limitation of the second to-be-locked member from the second lock hook in the second working position.

[0009] In some embodiments, the second lock body is configured to be rotated relative to the connecting body by the second to-be-locked member to switch from the first working position to the second working position during the movement of the second to-be-locked member to the second lock hook.

[0010] In some embodiments, the second locking assembly further comprises a reset member connecting the second lock body and the connecting body, the reset member being configured to provide a force to make the second lock body in the first position.

[0011] In some embodiments, the second lock body comprises a first part and a second part, in the state of the first position, the first part abuts against the outside of the second lock hook, and the second part extends into the second lock hook to restrict the second to-be-locked member from being separated from the second lock hook.

[0012] In some embodiments, in the state of the second position, the first part is separated from the second lock hook, and the second part moves out of the second lock hook.

[0013] In some embodiments, the second lock body is configured to rotate in one of the counterclockwise direction and the clockwise direction to switch from the second position to the first position, and rotate in the other of the counterclockwise direction and the clockwise direction to switch from the first position to the second position.

[0014] In some embodiments, the second lock body is configured to rotate in the counterclockwise direction or the clockwise direction to switch from the second position to the first position, and stop rotating continuously when the first part abuts against the outside of the second lock hook.

[0015] In some embodiments, the double-lock connector further comprises a driving assembly connected to the first lock body, the driving assembly being configured to drive the first lock body to rotate relative to the connecting body, and push the second lock body to rotate to switch the second lock body from the first position to the second position.

[0016] In some embodiments, the driving assembly comprises:

[0017] a driving cylinder, a cylinder end of which is rotationally connected to the connecting body, and a cylinder rod end of which is rotationally connected to the first lock body;

[0018] a push rod, rotationally connected to the cylinder end, the push rod being configured to rotate relative to the connecting body to push the second lock body to rotate to switch the second lock body from the first position to the second position; and

[0019] a connecting rod, a first end of which is rotationally connected to the first lock body, and a second end of which is rotationally connected to the push rod.

[0020] In some embodiments, the dial lever is provided with a first hook portion, and the second lock body is provided with a second hook portion, the first hook portion is configured to rotate with the dial lever to connect the second hook portion, and further push the second lock body to rotate.

[0021] In some embodiments, the first locking assembly further comprises a limiting member rotatably arranged on the connecting body, the limiting member is configured to rotate to switch between a locking position and an unlocking position, the limiting member limits the rotation of the first lock body in the locking position, and the limiting member releases the limitation on the first lock body in the unlocking position.

[0022] In some embodiments, the first lock body further comprises a cylindrical body rotatably connected with the connecting body, a first groove is arranged on a part of the outer edge of the cylindrical body, the limiting member is configured as a circular member, a second groove is arranged on a part of the outer edge of the circular member, the limiting member is configured to rotate, and the limiting member is in the locking position when the outer edge of the circular member extends into the first groove, and the limiting member is in the unlocking position when the second groove is opposite to the first groove or the outer edge of the cylindrical body extends into the second groove.

[0023] In some embodiments, the first lock body further comprises a cylindrical body rotatably connected with the connecting body, a first groove is arranged on a part of the outer edge of the cylindrical body, the limiting member comprises a plug-in member, the plug-in member is configured to rotate, and the limiting member is in the locking position when the plug-in member extends into the first groove, and the plug-in member is configured to rotate, and the limiting member is in the unlocking position when the plug-in member moves out of the first groove.

[0024] In some embodiments, the second lock hook is configured as a hook, the second lock hook faces a first direction, the first lock hook is configured as a hook, and the first lock hook faces a second direction in a state of locking the first to-be-locked member, the first direction and the second direction are opposite directions.

[0025] In one aspect of the present application, a double-lock connector is provided.

[0026] In one aspect of the present application, an engineering machine is provided, comprising the double-lock connector.

[0027] Based on the above technical solutions, the present application has at least the following beneficial effects:

[0028] In some embodiments, the first lock hook is used to lock the first to-be-locked member, and the second lock body can be in the first working position to limit the disengagement of the second to-be-locked member from the second lock hook, so as to lock the second to-be-locked member and improve the safety and reliability of the double-lock connector, thereby alleviating the problem of safety hazards. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a partial structural diagram of an excavator provided according to some embodiments of the present invention;

[0031] Figure 2 This is a schematic diagram of a double-locking connector provided according to some embodiments of the present invention;

[0032] Figure 3 This is a schematic diagram of a double-locking connector according to some embodiments of the present invention during the process of locking a second locking member;

[0033] Figure 4 This is a schematic diagram of a double-locking connector according to some embodiments of the present invention during the process of locking a first locking member;

[0034] Figure 5 A schematic diagram of a reset member provided according to some embodiments of the present invention;

[0035] Figure 6 This is a schematic diagram showing the second lock body in the first position according to some embodiments of the present invention;

[0036] Figure 7 This is a schematic diagram showing the limiting member in the locked position according to some embodiments of the present invention;

[0037] Figure 8 for Figure 7 A magnified schematic diagram of a local structure;

[0038] Figure 9 This is a schematic diagram showing the limiting member in the unlocked position according to some embodiments of the present invention;

[0039] Figure 10 This is a schematic diagram illustrating the process of a second lock body switching from a first station to a second station due to being pushed by a second locking member according to some embodiments of the present invention;

[0040] Figure 11 This is a schematic diagram of a second lock body provided according to some embodiments of the present invention;

[0041] Figure 12 A schematic diagram of a first lock body provided according to some embodiments of the present invention;

[0042] Figure 13 This is a schematic diagram of a limiting member provided according to a first embodiment of the present invention;

[0043] Figure 14 Schematic view of the limiting member according to the second embodiment of the present application in the locked position;

[0044] Figure 15 Schematic view of the limiting member according to the second embodiment of the present application in the unlocked position.

[0045] The reference signs in the drawings correspond as follows:

[0046] 1 - first locking assembly; 11 - first lock body; 111 - first hook; 112 - cylindrical body; 113 - first slot; 12 - limiting member; 121 - circular member; 122 - second slot; 123 - insertion member;

[0047] 2 - second locking assembly; 21 - second lock body; 211 - first part; 212 - second part; 213 - second hook part; 214 - limiting part; 215 - accommodating slot; 22 - second hook; 23 - reset member;

[0048] 3 - connecting body; 31 - connecting plate;

[0049] 4 - driving assembly; 41 - driving cylinder; 42 - lever; 421 - first hook part; 43 - connecting rod;

[0050] 5 - pin shaft;

[0051] 100 - arm; 200 - oil cylinder; 300 - rocker; 400 - excavator connecting rod; 500 - double-lock connector; 600 - first part to be locked; 700 - second part to be locked; 800 - bucket;

[0052] P - first axis; Q - second axis; R - third axis; S - fourth axis; T - fifth axis; L - locus.

[0053] It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Furthermore, like or similar reference numerals are intended to represent like or similar parts throughout the specification. DETAILED DESCRIPTION

[0054] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely intended to illustrate the present application and should not be construed in any way as limiting the present application. The present application can be implemented in numerous different forms, and thus the exemplary embodiments are provided so as to thoroughly and completely convey the scope of the present application to those skilled in the art. It should be noted that the relative arrangement of the components and steps illustrated in these embodiments, the components of the materials, numerical expressions, and numerical values set forth in these embodiments are to be interpreted as merely exemplary, and not as a limitation unless otherwise specifically stated.

[0055] The terms "first", "second", and similar terms in the present application do not denote any order, number or importance, but are only used to distinguish different parts. The terms "comprising" or "including" or similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are only used to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0056] In the present application, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to another device, the specific device can be directly connected to the other device without an intervening device, or can not be directly connected to the other device with an intervening device.

[0057] All terms used in the present application, including technical terms or scientific terms, have the same meanings as understood by a person of ordinary skill in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted in a manner consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formalized manner, unless otherwise specifically defined herein.

[0058] Techniques, methods, and equipment known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification where appropriate.

[0059] Reference Figure 1 The excavator includes a dipper arm 100, a cylinder 200, a rocker 300, an excavator link 400, a double-lock connector 500, a first to-be-locked member 600, a second to-be-locked member 700, and a bucket 800. The double-lock connector 500 is connected to the bucket 800 by locking the first to-be-locked member 600 and the second to-be-locked member 700, and is further connected to the dipper arm 100 and the excavator link 400. The excavator link 400 is further connected to the rocker 300, and the rocker 300 is further connected to the dipper arm 100. One end of the cylinder 200 is connected to the dipper arm 100, and the other end of the cylinder 200 is connected to the connection between the excavator link 400 and the rocker 300.

[0060] In the embodiment of the present application, the first to-be-locked member 600 and the second to-be-locked member 700 each include a pin shaft.

[0061] In some related technologies, the double-lock connector has a safety hazard. Based on this, some embodiments of the present application provide a double-lock connector 500 to alleviate the problem of existing safety hazards.

[0062] Figure 2 is a structural diagram of some embodiments of the double-lock connector according to the present application. Referring to Figure 2 In some embodiments, the double-lock connector comprises a first locking assembly 1, a second locking assembly 2 and a connecting body 3.

[0063] The first locking assembly 1 comprises a first lock body 11 arranged on the connecting body 3. The first lock body 11 comprises a first lock hook 111. The first lock body 11 is rotatably arranged relative to the connecting body 3, so as to lock the first to-be-locked member 600, as shown in Figure 4 , or release the first to-be-locked member 600, as shown in Figure 6 .

[0064] Referring to Figure 2 , the second locking assembly 2 comprises a second lock body 21 and a second lock hook 22 arranged on the connecting body 3. The second lock hook 22 is configured to lock the second to-be-locked member 700. The second lock body 21 is rotatably arranged relative to the second lock hook 22, so as to switch between a first working position and a second working position. Referring to Figure 4 , the second lock body 21 is configured to be in the first working position, to limit the disengagement of the second to-be-locked member 700 from the second lock hook 22, and the second lock body 21 is in a locked position relative to the second to-be-locked member 700. Referring to Figure 3 , the second lock body 21 is configured to be in the second working position, to release the limitation of the second to-be-locked member 700 from the second lock hook 22, and the second lock body 21 is in an unlocked position relative to the second to-be-locked member 700.

[0065] In embodiments of the present application, the first lock hook 111 is used to lock the first to-be-locked member 600. In the case that the second to-be-locked member 700 enters the second lock hook 22, the second lock body 21 is in the first working position, limiting the disengagement of the second to-be-locked member 700 from the second lock hook 22, achieving the locking of the second to-be-locked member 700, improving the safety and reliability of the double-lock connector, and alleviating the problem of potential safety hazards.

[0066] In some embodiments, the number of connecting bodies 3 is two, and the two connecting bodies 3 are arranged at intervals. The first locking assembly 1 and the second locking assembly 2 are arranged between the two connecting bodies 3.

[0067] In some embodiments, the first lock hook 111 is configured in a hook shape, and the second lock hook 22 is configured in a hook shape. The first to-be-locked member 600 comprises a pin shaft, and the second to-be-locked member 700 comprises a pin shaft. The first lock hook 111 and the second lock hook 22 can hook the corresponding pin shafts, and this structure is versatile and can be applied to the connection of various structures of auxiliary devices (not limited to the shovel in the illustrative embodiments), and is convenient to install.

[0068] Referring to Figure 4In some embodiments, the second locking hook 22 faces a first direction, and the first locking hook 111 faces a second direction in the state of locking the first object to be locked 600, the first direction being opposite to the second direction.

[0069] Referring to Figure 10 In some embodiments, the second locking body 21 is configured to be rotated relative to the connecting body 3 by the second object to be locked 700 during the movement of the second object to be locked 700 towards the second locking hook 22, so as to switch from the first position to the second position.

[0070] Referring to Figure 2 And Figure 5 In some embodiments, the second locking assembly 2 further comprises a restoring member 23 connected between the second locking body 21 and the connecting body 3, the restoring member 23 being configured to provide a force to keep the second locking body 21 in the first position.

[0071] In some embodiments, the restoring member 23 comprises a torsion spring connected between the second locking body 21 and the connecting body 3, the torsion spring providing the force to keep the second locking body 21 in the first position. Referring to Figure 2 The force provided by the torsion spring makes the second locking body 21 have a tendency to rotate counterclockwise.

[0072] Referring to Figure 4 In some embodiments, the second locking body 21 comprises a first part 211 and a second part 212, in the state of the first position, the first part 211 abuts against the outside of the second locking hook 22, and the second part 212 extends into the second locking hook 22 to limit the second object to be locked 700 from disengaging from the second locking hook 22.

[0073] Referring to Figure 10 In some embodiments, in the state of the second position, the first part 211 is disengaged from the second locking hook 22, and the second part 212 moves out of the second locking hook 22.

[0074] In some embodiments, the second locking body 21 is configured to rotate in one of the counterclockwise direction and the clockwise direction to switch from the second position to the first position, and the second locking body 21 is configured to rotate in the other of the counterclockwise direction and the clockwise direction to switch from the first position to the second position.

[0075] Referring to Figure 10 In the illustrated embodiments, the second locking body 21 is capable of switching from the first position to the second position by rotating clockwise, and the second locking body 21 is capable of switching from the second position to the first position by rotating counterclockwise.

[0076] Referring to Figure 4In some embodiments, the second lock body 21 is configured to rotate in a counterclockwise direction or a clockwise direction to switch from the second position to the first position, and continue to rotate is stopped in the case that the first part 211 abuts against the outside of the second lock hook 22.

[0077] With reference to Figure 10 In the illustrated embodiment, the second lock body 21 rotates counterclockwise to switch from the second position to the first position; with reference to Figure 4 In the case that the first part 211 abuts against the outside of the second lock hook 22, continue to rotate is stopped, the second lock body 21 is in the first position, and the second part 212 extends into the second lock hook 22.

[0078] With reference to Figure 11 In some embodiments, the second lock body 21 includes the first part 211 and the second part 212, the first part 211 is provided with a receiving groove 215 for accommodating the reset member 23, the reset member 23 can be a torsion spring, the torsion spring is accommodated in the receiving groove 215, the second lock body 21 is rotatably connected to the connecting body 3 through a pin shaft, and the pin shaft also passes through the torsion spring, the torsion spring connects the connecting body 3 and the second lock body 21, and can provide a force to keep the second lock body 21 in the first position. The first part 211 is provided with a limiting part 214, and when the second lock body 21 is in the first position, the limiting part 214 extends into the second lock hook 22.

[0079] With reference to Figure 6 When the second lock body 21 is in the first position, the second to-be-locked member 700 moves towards the outside of the second lock hook 22 and has a tendency to disengage from the second lock hook 22, the limiting part 214 abuts against the second to-be-locked member 700, the second to-be-locked member 700 pushes the limiting part 214 to make the limiting part 214 drive the second lock body 21 to have a tendency to rotate counterclockwise, but since the second lock body 21 is in the first position, the first part 211 abuts against the outside of the second lock hook 22, the second lock body 21 will not rotate counterclockwise, and the second lock body 21 remains in the first position, thereby achieving primary locking of the second to-be-locked member 700.

[0080] With reference to Figure 3 In some embodiments, the double-lock connector further includes a driving assembly 4 connected to the first lock body 11, and the driving assembly 4 is configured to drive the first lock body 11 to rotate relative to the connecting body 3 to release the first to-be-locked member 600, and in the process, the driving assembly 4 also drives the second lock body 21 to rotate to switch the second lock body 21 from the first position to the second position.

[0081] With reference to Figure 2 And Figure 3 In some embodiments, the driving assembly 4 includes a driving cylinder 41, a lever 42, and a connecting rod 43.

[0082] The cylinder end of the drive cylinder 41 is rotationally connected to the connecting body 3, and the cylinder rod end of the drive cylinder 41 is rotationally connected to the first lock body 11.

[0083] The push rod 42 is rotationally connected to the cylinder end of the drive cylinder 41, and is configured to rotate relative to the connecting body 3 to push the second lock body 21 to rotate and switch the second lock body 21 from the first position to the second position.

[0084] The first end of the connecting rod 43 is rotationally connected to the first lock body 11, and the second end of the connecting rod 43 is rotationally connected to the push rod 42.

[0085] The first lock hook 111, the connecting rod 43, the push rod 42, and the drive cylinder 41 form a connecting rod mechanism, and the last stroke of the drive cylinder 41 is used to unlock the second lock body 21, without causing the linkage of the first lock body 11 and the second lock body 21, thereby alleviating the problem of simultaneous failure of the first lock body 11 and the second lock body 21.

[0086] In some embodiments, the reset member 23 is a locking structure of the second lock body 21, and the limiting member 12 is a locking structure of the first lock body 11, both of which are a two-stage locking mechanism of the double-lock connector.

[0087] In some embodiments, the drive cylinder 41 includes an oil cylinder or a gas cylinder, etc.

[0088] Reference Figure 3 In some embodiments, the push rod 42 is provided with a first hook portion 421, and the second lock body 21 is provided with a second hook portion 213, and the first hook portion 421 is configured to rotate with the push rod 42 to connect the second hook portion 213, thereby pushing the second lock body 21 to rotate.

[0089] Reference Figure 11 In some embodiments, the second hook portion 213 is arranged on the second component 212 of the second lock body 21.

[0090] Reference Figure 2 In some embodiments, the first locking assembly 1 further includes a limiting member 12 rotationally arranged on the connecting body 3. The limiting member 12 is configured to rotate to switch between a locked position and an unlocked position. Reference Figure 7 and Figure 8 When the limiting member 12 is in the locked position, the rotation of the first lock body 11 is limited. Reference Figure 9 and Figure 10 When the limiting member 12 is in the unlocked position, the limitation on the first lock body 11 is removed.

[0091] Reference Figure 12 In some embodiments, the first lock body 11 further includes a cylindrical body 112 rotationally connected to the connecting body 3, and a first groove 113 is arranged on a part of the outer edge of the cylindrical body 112. The first lock hook 111 is arranged on the cylindrical body 112.

[0092] Reference Figure 13 In the first embodiment of the limiting member 12, the limiting member 12 is configured as a circular member 121, and a part of the outer edge of the circular member 121 is provided with a second groove 122.

[0093] Reference Figure 7 And Figure 8 The limiting member 12 is configured to rotate, and when the outer edge of the circular member 121 extends into the first groove 113, the limiting member 12 is in the locked position, limiting the rotation of the first lock body 11.

[0094] Reference Figure 9 And Figure 10 When the second groove 122 is opposite to the first groove 113 or the outer edge of the cylindrical body 112 extends into the second groove 122, the limiting member 12 is in the unlocked position, and the restriction on the first lock body 11 is removed.

[0095] In the first embodiment of the limiting member 12, since the limiting member 12 is a circular member 121, and a part of the outer edge of the circular member 121 is provided with a second groove 122, the center of gravity of the limiting member 12 is offset. By adjusting the attitude of the double-lock connector 500 through the control device, the limiting member 12 can rotate under the action of gravity to switch from the locked position to the unlocked position. During the normal working process of the excavator, the attitude change of the double-lock connector 500 will make the limiting member 12 in a state of frequent rotation under the action of gravity, but the limiting member 12 will remain in the locked position in most cases. When it is necessary to disassemble the bucket, the control device can be controlled to make the double-lock connector 500 in a unique special attitude, and in this attitude, the limiting member 12 can rotate under the action of gravity to switch from the locked position to the unlocked position. Of course, a driving member can also be provided to drive the limiting member 12 to rotate, so as to switch the limiting member 12 between the locked position and the unlocked position.

[0096] The control device is the control device of the engineering machinery such as the excavator, and in the excavator, the extension and retraction of the excavator cylinder 200 are controlled through the control device, and then the attitude of the double-lock connector 500 is adjusted.

[0097] Reference Figure 12 In some embodiments, the first lock body 11 further comprises a cylindrical body 112 rotationally connected with the connecting body 3, and a part of the outer edge of the cylindrical body 112 is provided with a first groove 113.

[0098] Reference Figure 14 And Figure 15In the second embodiment of the limiting member 12, the limiting member 12 comprises a plug 123 configured to rotate, and when the plug 123 extends into the first slot 113, the limiting member 12 is in the locked position, limiting the rotation of the first lock body 11. The plug 123 is configured to rotate, and when the plug 123 moves out of the first slot 113, the limiting member 12 is in the unlocked position, releasing the limitation on the first lock body 11.

[0099] The two connecting bodies 3 are arranged at intervals, and the ends of the two connecting bodies 3 are connected by a connecting plate 31. The plug 123 increases the offset distance of the center of gravity of the limiting member 12, and fixes the unlocking position when the plug 123 is in contact with the connecting plate 31.

[0100] The limiting member 12 and the reset member 23 are mechanical locking structures independent of the hydraulic system, and can realize two-stage locking. In the case of loss of engagement force or accidental unlocking of the hydraulic system, the two-stage mechanical lock can still ensure that the accessory device (such as the bucket in the illustrative embodiment of the present application) does not fall in its working position, realizing the function of double locking in nature, and greatly improving the safety and reliability coefficient.

[0101] In some embodiments, the operation method of the double-lock connector is as follows.

[0102] Reference Figure 3 The limiting member 12 is kept in the unlocked position, the cylinder rod of the driving cylinder 41 is in the retracted state to keep the first lock hook 111 in the unlocked position, the driving cylinder 41 drives the toggle lever 42 to rotate through the connecting rod 43 to lift the second lock body 21, so that the second lock body 21 is kept in the second working position (unlocked position), and the movement of the double-lock connector 500 makes the second to-be-locked member 700 enter the second lock hook 22.

[0103] Reference Figure 4 The limiting member 12 is still kept in the unlocked position, and the cylinder rod of the driving cylinder 41 is extended to drive the first lock hook 111 to rotate, so that the first lock hook 111 hooks the first to-be-locked member 600, realizing one-stage locking of the first to-be-locked member 600.

[0104] At the same time, under the action of the connecting rod mechanism, the rotation of the first lock hook 111 will separate the toggle lever 42 from the second lock body 21, and after the second lock body 21 loses the limitation of the toggle lever 42, it will rotate under the action of the reset member 23 until the first part 211 abuts against the outside of the second lock hook 22, the second part 212 extends into the second lock hook 22, and the second lock body 21 is in the first working position (locked position), limiting the disengagement of the second to-be-locked member 700 from the second lock hook 22, and realizing two-stage locking of the second to-be-locked member 700.

[0105] The limiting member 12 is kept in the locked position, realizing two-stage locking of the first to-be-locked member 600.

[0106] The specific embodiments of the excavator and the double-lock connector will be described in detail below with reference to the accompanying drawings. Figures 1 to 15 The specific embodiments of the excavator and the double-lock connector will be described in detail below with reference to the accompanying drawings.

[0107] As shown in the drawings, the excavator comprises a dipper arm 100, a hydraulic cylinder 200, a rocker 300, an excavator connecting rod 400, a double-lock connector 500, a first part to be locked 600, a second part to be locked 700, and a bucket 800. Figure 1 The first end of the hydraulic cylinder 200 is rotationally connected to the dipper arm 100, and the second end of the hydraulic cylinder 200 is rotationally connected to the connection between the excavator connecting rod 400 and the rocker 300. The excavator connecting rod 400 is further rotationally connected to the double-lock connector 500. The rocker 300 is further rotationally connected to the dipper arm 100. The double-lock connector 500 is connected to the bucket 800 by locking the first part to be locked 600 and the second part to be locked 700.

[0108] The double-lock connector 500 is hingedly connected to the dipper arm 100 and the excavator connecting rod 400 through two pin shafts 5, respectively, and can be controlled to extend or retract the hydraulic cylinder 200 of the excavator bucket, assisted by the coordinated movement of the rocker 300 of the excavator, to adjust the posture of the double-lock connector 500. The bucket 800 is locked to the second locking hook 22 of the double-lock connector 500 through the second part to be locked 700, and the bucket 800 is locked to the first locking hook 111 of the double-lock connector 500 through the first part to be locked 600, to realize the connection between the bucket 800 and the double-lock connector 500.

[0109] Referring to the drawings,

[0110] The first lock body 11 is hingedly connected to the connecting body 3 through a first shaft P, and the first lock body 11 can rotate about the first shaft P. The first lock body 11 is hingedly connected to the cylinder rod end of the driving cylinder 41 through a second shaft Q, and the first lock body 11 and the cylinder rod of the driving cylinder 41 can rotate about the second shaft Q. The connecting rod 43 is hingedly connected to the first lock body 11 and the push rod 42 at both ends through pin shafts. The push rod 42 and the cylinder barrel end of the driving cylinder 41 are hingedly connected to the connecting body 3 through a fourth shaft S, and the push rod 42 and the cylinder barrel of the driving cylinder 41 can rotate about the fourth shaft S. The second lock body 21 and the reset member 23 are hingedly connected to the connecting body 3 through a third shaft R, and the second lock body 21 and the reset member 23 can rotate about the third shaft R. The pin shaft 5 is used for hingedly connecting the double-lock connector 500 to the main machine (in this illustrative embodiment, the dipper arm of the excavator, etc.). The limiting member 12 is hingedly connected to the connecting body 3 through a fifth shaft T. Figure 2 The connecting body 3 is an external rack shell of the double-lock connector 500, which mainly supports and connects.

[0111] The connecting body 3 is an external rack shell of the double-lock connector 500, which mainly supports and connects.

[0112] The first lock body 11 is a first locking mechanism of the first to-be-locked member 600, and can rotate around the first shaft P under the driving of the driving cylinder 41. As a meshing system, the first lock body 11 and the driving cylinder 41 together form a force-lock meshing system. The first lock body 11 comprises a first lock hook 111 and a cylindrical body 112 connected with each other. The first lock hook 111 is used for meshing and locking with the first to-be-locked member 600, and the cylindrical body 112 is rotatably connected with the connecting body 3 through the first shaft P.

[0113] The connecting rod 43 and the push rod 42 together with the first lock body 11 and the driving cylinder 41 form a connecting rod mechanism, which can realize the switching of the second lock body 21 from the first working position to the second working position.

[0114] The second lock body 21 can rotate around the third shaft R under the action of its own gravity, the reset member 23 or the second to-be-locked member 700.

[0115] Reference Figure 11 The second lock body 21 comprises a first part 211 and a second part 212, and the second part 212 is provided with a second hook part 213 and a limiting part 214. The first part 211 is provided with a containing groove 215 for containing the reset member 23.

[0116] Reference Figure 3 By adjusting the posture of the double-lock connector 500 through the control device, the limiting member 12 is kept in the unlocking position, the cylinder rod of the driving cylinder 41 is in the retracted state, the first lock hook 111 is kept in the unlocking position, the driving cylinder 41 drives the push rod 42 to rotate around the fourth shaft S through the connecting rod 43, thereby lifting the second lock body 21, the first hook part 421 on the push rod 42 and the second hook part 213 on the second lock body 21 are hooked with each other, the push rod 42 drives the second lock body 21 to rotate, the second lock body 21 is kept in the second working position (the unlocking position), the double-lock connector 500 is moved to make the second to-be-locked member 700 enter the second lock hook 22, and the meshing process is completed.

[0117] Reference Figure 4 The limiting member 12 is still kept in the unlocking position, the cylinder rod of the driving cylinder 41 is extended to drive the first lock hook 111 to rotate around the first shaft P, the meshing process with the first to-be-locked member 600 is completed, and the first level locking of the first to-be-locked member 600 by the first lock hook 111 is also completed.

[0118] Under the driving of the connecting rod mechanism, the rotation of the first lock hook 111 will separate the push rod 42 from the second lock body 21, and the second lock body 21 will rotate around the third shaft R under the action of the reset member 23 after losing the limitation of the push rod 42, until the first part 211 is engaged with the outside of the second lock hook 22, the second lock body 21 is located in the first working position (the locking position), and the second level locking of the second to-be-locked member 700 is realized.

[0119] Reference Figure 5 andFigure 11 The reset member 23 is a torsion spring installed in the accommodating groove 215 on the first component 211 of the second lock body 21. The torsion torque provided by the reset member 23 is greater than the torque of the second lock body 21 rotating around the third axis R under the action of gravity, so that the second lock body 21 can be kept in the locked position in any posture of the double-lock connector 500.

[0120] With reference to Figure 6 If the first lock hook 111 and the limiting member 12 simultaneously lose the engagement force or are accidentally unlocked, that is, the first lock body 11 completely fails, the first component 211 cannot rotate due to the blocking of the second lock hook 22, and the limiting portion 214 of the second lock body 21 will prevent the second to-be-locked member 700 from being separated. When the second to-be-locked member 700 tries to separate, the force exerted on the second lock body 21 is opposite to the direction of the force required for the second lock body 21 to be unlocked. Therefore, if the second lock body 21 does not actively release the locked state, the force exerted by the reset member 23 and the pushing force of the second to-be-locked member 700 will keep the second lock hook 22 in the locked position at all times, thereby achieving the secondary locking of the second to-be-locked member 700. Figure 6 As can be seen from the trajectory line L of the first to-be-locked member 600 when it is separated, if the first lock body 11 completely fails and the first to-be-locked member 600 is separated, it will not cause the linkage mechanism to complete the unlocking movement, and thus will not cause the linkage failure of the first lock body 11 and the second lock body 21.

[0121] With reference to Figure 7 and Figure 8 Since the limiting member 12 is a circular member 121, and the outer edge of the circular member 121 is provided with a second groove 122, the center of gravity of the limiting member 12 is offset. By adjusting the posture of the double-lock connector 500 through the control device, the limiting member 12 will rotate around the fifth axis T under the action of gravity, so that the second groove 122 and the first groove 113 on the cylindrical body 112 of the first lock body 11 are staggered with each other, and the locking process of the limiting member 12 is completed. If the first lock hook 111 loses the engagement force or is accidentally unlocked, the force exerted by the first to-be-locked member 600 when it tries to separate will cause the first lock hook 111 to have a rotating trend around the first axis P, and the limiting member 12 will block the rotation of the first lock hook 111, thereby achieving the secondary locking of the first to-be-locked member 600.

[0122] With reference to Figure 9 and Figure 3When the bucket 800 needs to be replaced, first, the posture of the double-lock connector 500 is adjusted by operating the control device, so that the limiting piece 12 rotates around the fifth shaft T and remains in the unlocked position; second, the cylinder rod of the driving cylinder 41 is retracted by operating the control device, so that the first locking hook 111 rotates around the first shaft P and remains in the unlocked position; under the driving of the connecting rod mechanism, the push rod 42 rotates around the fourth shaft S and opens the second lock body 21 to remain in the unlocked position; finally, the first and second locking pieces 600 and 700 are separated from the double-lock connector 500 by operating the control device, that is, the disengagement process of the bucket 800 and the double-lock connector 500 is completed.

[0123] Reference Figure 10 The second lock body 21 is switched from the first station (the locked position) to the second station (the unlocked position) by the force of the second locking piece 700, specifically: the posture of the double-lock connector 500 is adjusted by operating the control device, so that the limiting piece 12 remains in the unlocked position, the cylinder rod of the driving cylinder 41 is in the extended state, and the first locking hook 111 remains in the locked position; under the driving of the connecting rod mechanism, the push rod 42 rotates around the fourth shaft S, so that the push rod 42 is separated from the second lock body 21, and the second lock body 21 remains in the locked position. The double-lock connector 500 is moved to gradually enter the second locking hook 22, and because the other side surface of the limiting part 214 is wedge-shaped, the second locking piece 700 will lift the second lock body 21 during the movement process, so that the second lock body 21 is switched from the first station to the second station, and the engagement process is completed. After the second locking piece 700 completely enters the second locking hook 22, the second lock body 21 is restored to the locked position under the action of the reset piece 23.

[0124] The double-lock function of the double-lock connector refers to double locking. The first locking hook 111, the second locking hook 22 and the second lock body 21 of the double-lock connector form a primary locking structure, and the limiting piece 12 and the reset piece 23 are mechanical locking structures independent of the hydraulic system, which form a secondary locking structure. In the case of losing the engagement force (for example, the hydraulic system fails or is accidentally turned off), the double locking can ensure that the accessory device still remains in its normal working position.

[0125] The double-lock connector provided by the embodiment of the application has good controllability, high connection efficiency and high safety.

[0126] Reference Figure 1 Some embodiments of the application also provide a excavator comprising the double-lock connector described above.

[0127] The double-lock connector 500 is hinged with the bucket lever 100 and the excavator connecting rod 400 of the excavator through two pin shafts 5 respectively, and the hydraulic cylinder 200 of the excavator bucket can be extended or retracted through the control device, and the posture adjustment of the double-lock connector 500 is realized by the cooperation of the swing lever 300 of the excavator. The bucket 800 is locked with the second locking hook 22 of the double-lock connector 500 through the second locking part 700, and the bucket 800 is locked with the first locking hook 111 arranged at the end of the first locking body 11 of the double-lock connector 500 through the first locking part 600, so that the connection between the bucket 800 and the double-lock connector 500 is realized.

[0128] Some embodiments of the application also provide an engineering machine comprising the double-lock connector.

[0129] The double-lock connector 500 provided by the embodiments of the application can realize the quick connection and replacement of the multifunctional accessory device and the working device of the excavator or other engineering machines, shorten the downtime, and improve the work efficiency.

[0130] The first locking assembly 1 and the second locking assembly 2 of the double-lock connector can realize the first double-lock locking of the accessory device of the excavator or other engineering machines, and the first locking assembly 1 and the second locking assembly 2 also have mechanical locking structures independent of the hydraulic system, and can realize the second double-lock locking of the accessory device, so that the safety and reliability of the double-lock connector are greatly improved; all the locking mechanisms of the double-lock connector can be automatically completed by the operator through the remote control of the control device in the cab, so that the operation is convenient, the labor intensity is reduced, and the work efficiency is improved; the arc-shaped clamping surface of the first locking hook 111 is in distance-tight cooperation with the clamping opening of the connecting body 3, and the working state of the accessory device can be effectively stabilized.

[0131] Based on the above embodiments of the application, the technical features of one embodiment can be beneficially combined with one or more other embodiments without explicit negation or conflict.

[0132] Although some specific embodiments of the application have been described in detail above, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced by equivalents without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. A double-locking connector, characterized in that, include: Connector (3); The first locking assembly (1) includes a first locking body (11) disposed on the connecting body (3), the first locking body (11) including a first locking hook (111), the first locking body (11) being rotatably disposed relative to the connecting body (3) so that the first locking hook (111) locks the first locking member (600) or releases the first locking member (600); and The second locking component (2) includes a second lock body (21) and a second lock hook (22) disposed on the connecting body (3). The second lock hook (22) is configured to lock the second member to be locked (700). The second lock body (21) is rotatably disposed relative to the second lock hook (22) to switch between a first station and a second station. The second lock body (21) is configured to restrict the second member to be locked (700) from disengaging from the second lock hook (22) at the first station, and to release the restriction on the second member to be locked (700) and the second lock hook (22) at the second station. The driver component (4) includes: The drive cylinder (41) has its cylinder end rotatably connected to the connecting body (3) and its cylinder rod end rotatably connected to the first lock body (11); A lever (42), rotatably connected to the cylinder end, is configured to rotate relative to the connecting body (3) to push the second lock body (21) to rotate, thereby switching the second lock body (21) from the first station to the second station; and A connecting rod (43) has a first end rotatably connected to the first lock body (11) and a second end rotatably connected to the lever (42); the lever (42) is provided with a first hook (421) and the second lock body (21) is provided with a second hook (213); the first hook (421) is configured to rotate with the lever (42) to connect with the second hook (213) and thereby push the second lock body (21) to rotate; The first locking component (1) further includes a limiting member (12) rotatably disposed on the connecting body (3); the limiting member (12) is configured to rotate to switch between a locked position and an unlocked position, the limiting member (12) restricting the rotation of the first lock body (11) in the locked position, and the limiting member (12) releasing the restriction on the first lock body (11) in the unlocked position; The first lock body (11) further includes a cylinder (112) rotatably connected to the connecting body (3). A first groove (113) is provided on a portion of the outer edge of the cylinder (112). The limiting member (12) is constructed as a circular member (121). A second groove (122) is provided on a portion of the outer edge of the circular member (121). The limiting member (12) is configured to rotate. When the outer edge of the circular member (121) extends into the first groove (113), the limiting member (12) is located in the locked position. When the second groove (122) is opposite to the first groove (113) or the outer edge of the cylinder (112) extends into the second groove (122), the limiting member (12) is located in the unlocked position.

2. The double-locking connector as described in claim 1, characterized in that, The second lock body (21) is configured to be pushed by the second locking member (700) and rotate relative to the connecting body (3) during the process of the second locking member (700) moving toward the second locking hook (22) to switch from the first station to the second station.

3. The double-locking connector as described in claim 1, characterized in that, The second locking component (2) further includes a reset member (23) that connects the second lock body (21) and the connecting body (3) and is configured to provide a force that puts the second lock body (21) in the first position.

4. The double-locking connector as described in claim 1, characterized in that, The second lock body (21) includes a first component (211) and a second component (212). In the state of the first work station, the first component (211) abuts against the outside of the second lock hook (22), and the second component (212) extends into the second lock hook (22) to restrict the second locking member (700) from disengaging from the second lock hook (22).

5. The double-locking connector as described in claim 4, characterized in that, When the second lock body (21) is in the state of the second work station, the first component (211) disengages from the second lock hook (22), and the second component (212) moves out of the second lock hook (22).

6. The double-locking connector as described in claim 4, characterized in that, The second lock body (21) is configured to rotate in one of the counterclockwise and clockwise directions to switch from the second work station to the first work station, and to rotate in the other of the counterclockwise and clockwise directions to switch from the first work station to the second work station.

7. The double-locking connector as described in claim 6, characterized in that, The second lock body (21) is configured to rotate in a counterclockwise or clockwise direction to switch from the second work station to the first work station, and to stop rotating when the first component (211) comes into contact with the outside of the second lock hook (22).

8. The double-locking connector as described in any one of claims 1 to 7, characterized in that, The second locking hook (22) is constructed in a hook shape and faces a first direction. The first locking hook (111) is constructed in a hook shape and faces a second direction when the first locking member (600) is locked. The first direction is opposite to the second direction.

9. An excavator, characterized in that, Includes the double-locking connector as described in any one of claims 1 to 8.

10. An engineering machinery, characterized in that, Includes the double-locking connector as described in any one of claims 1 to 8.

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