Pin inserting and pulling device and working machine

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a pin plugging and unplugging device and an operation machine.The pin plugging and unplugging device comprises a mounting plate provided with a plurality of connecting holes, and the connecting holes are distributed around the circumferential direction of the mounting plate at intervals; the number of the supporting pieces is equal to that of the connecting holes, the supporting pieces and the connecting holes are in one-to-one correspondence, the first end of each supporting piece is detachably connected with one connecting hole, and the second end of each supporting piece is suitable for being detachably connected with the mechanical body; the driving unit comprises a mounting part and a telescopic part, the mounting part is detachably connected to the mounting plate, the telescopic part selectively stretches out and draws back relative to the mounting part, and the end, away from the mounting part, of the telescopic part is suitable for being detachably connected with the pin shaft. The supporting pieces are detachably connected with the mounting plate through the connecting holes, the driving unit is detachably connected with the mounting plate through the mounting part, the whole device is in a combined type, simple in structure, capable of being rapidly disassembled and assembled and convenient to carry, the supporting pieces can be disassembled and assembled one by one, the weight is light, an auxiliary lifting tool is not needed, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a pin inserting and extracting device and a working machine. Background Art

[0002] Construction machinery is gradually developing towards large-tonnage and extra-large-tonnage directions. Before driving on the road, accessories such as boom and luffing cylinders need to be disassembled, and after arriving at the construction site, the disassembled accessories need to be installed. Therefore, it is necessary to insert and extract the pins connected to these accessories. Among them, the insertion and extraction of pins need to be carried out with the help of a pin inserting and extracting device. The existing pin inserting and extracting device usually includes a pin extracting frame and a hydraulic cylinder welded together. During use, the pin extracting frame is connected to the mechanical body equipped with the pin, and the hydraulic cylinder is connected to the pin, and the insertion and extraction of the pin are realized by the telescopic movement of the hydraulic cylinder.

[0003] However, the integral pin inserting and extracting device is heavy, has a large overall volume, is inconvenient to carry, and has poor operation convenience. Summary of the Utility Model

[0004] In view of this, the utility model provides a pin inserting and extracting device and a working machine to solve the problems of heavy weight and inconvenient operation of the pin inserting and extracting device.

[0005] In a first aspect, the utility model provides a pin inserting and extracting device, including: a mounting plate, provided with a plurality of connection holes, and the plurality of connection holes are circumferentially and spacedly distributed around the mounting plate; a support member, the number of the support members is equal to and corresponds to the number of the connection holes one by one, the first end of each support member is detachably connected to one of the connection holes, and the second end is adapted to be detachably connected to the mechanical body; a driving unit, including a mounting part and a telescopic part, the mounting part is detachably connected to the mounting plate, the telescopic part can selectively telescope relative to the mounting part, and the end of the telescopic part far from the mounting part is adapted to be detachably connected to the pin.

[0006] Beneficial effects: By providing connection holes on the mounting plate, the support member is detachably connected to the mounting plate through the connection holes, and the driving unit is detachably connected to the mounting plate through the mounting portion. The entire device is a combined type, with a simple structure, can be quickly disassembled and assembled, and is convenient to carry. When the first end of the support member is connected to the mounting plate and the second end is connected to the mechanical body, a fixed connection of the pin insertion and extraction device to the mechanical body is achieved. Moreover, the number of support members is multiple and corresponds one by one to the multiple connection holes on the mounting plate, and the multiple support members are circumferentially distributed around the mounting plate, which can improve the connection stability between the pin insertion and extraction device and the mechanical body. In addition, the multiple support members can be disassembled and assembled one by one respectively. Compared with the traditional integrally welded pin insertion and extraction device, it is lighter in weight, does not require auxiliary lifting tools, and can be disassembled and assembled by a single person manually. At the same time, when the telescopic portion of the driving unit is connected to the pin shaft, the pin shaft can be driven to move by the telescopic movement of the telescopic portion relative to the mounting portion, realizing the insertion and extraction of the pin shaft, and the operation is convenient.

[0007] In an alternative embodiment, external threads are respectively formed at both ends of the support member to form a first connection section and a second connection section.

[0008] Beneficial effects: By forming external threads at both ends of the support member, the support member can be threadedly connected to the mechanical body and the mounting plate. The thread structure is convenient to process, easy to achieve connection, and has good stability after connection.

[0009] In an alternative embodiment, the pin insertion and extraction device further includes: nuts, the number of nuts being twice the number of support members. The first connection section is selectively inserted into the connection hole, and one nut is sleeved on each side of the mounting plate on the first connection section to lock the support member on the mounting plate.

[0010] Beneficial effects: Two nuts are sleeved on the first connection section of each support member to form a pair of opposing nuts. One of the two nuts is located on one side of the mounting plate and the other is located on the other side of the mounting plate. By screwing the two nuts, the first connection section can be locked on the mounting plate, that is, the support member is locked on the mounting plate. The structure is simple, the operation is convenient, and the locking force is good. Moreover, by adjusting the position of the nut on the first connection section along the axis of the support member, the distance between the mounting plate and the mechanical body can be adjusted, so as to match the extraction stroke of different pin shafts, expanding the adaptability range of the pin insertion and extraction device and having strong versatility.

[0011] In an alternative embodiment, the connection hole is an oblong hole.

[0012] Beneficial effects: By setting the connection hole as an oblong hole, the position of the support member in the oblong hole can be adjusted as needed, so as to adjust the distance between the support members in the radial direction of the pin shaft, thereby realizing the matching of the support members with pin shafts of different models, ensuring that the support members can be connected to the second threaded holes opened on the mechanical body, and thus enhancing the versatility of the plug and pull pin device.

[0013] In an alternative embodiment, an installation through hole is provided on the installation plate, and the installation part is detachably connected to the side of the installation plate away from the support member, and the telescopic part is selectively passed through the installation through hole and then connected to the pin shaft.

[0014] Beneficial effects: The installation part and the support member are respectively located on opposite sides of the installation plate, and the telescopic part can extend to the side where the support member is located after passing through the installation through hole on the installation plate, which can relatively reduce the length of the support member, reduce costs, and facilitate the installation of the driving unit.

[0015] In an alternative embodiment, a connection support is fixedly provided on one side of the installation plate. The connection support is arranged close to the installation through hole. A first through hole is provided on the connection support, and a connection part is fixedly provided on the installation part. A second through hole corresponding to the first through hole is provided on the connection part; the plug and pull pin device further includes a first connecting member, and the first connecting member is detachably passed through the first through hole and the second through hole to connect the connection support and the connection part.

[0016] Beneficial effects: By providing a connection support on the installation plate and providing a first through hole on the connection support, and providing a connection part on the installation part and providing a second through hole on the connection part, and then passing a first connecting member through the first through hole and the second through hole in sequence, the connection part and the connection support can be connected by the first connecting member, with a simple structure and convenient operation.

[0017] In an alternative embodiment, the plug and pull pin device further includes: a connecting plate, the connecting plate is detachably connected to the end of the telescopic part away from the installation part, an installation hole is provided on the connecting plate, a first threaded hole is provided on the end face of the pin shaft, and the installation hole is adapted to correspond to the first threaded hole; a threaded connecting member, adapted to pass through the installation hole and then penetrate into the first threaded hole.

[0018] Beneficial effects: By providing mounting holes on the connecting plate corresponding to the first threaded holes on the pin shaft, when the threaded connecting member passes through the mounting holes and then into the first threaded holes on the pin shaft, the fixed connection between the connecting plate and the pin shaft can be achieved. Further, by connecting one end of the telescopic portion away from the mounting portion to the connecting plate, the connection between the telescopic portion and the pin shaft is realized, so that the pin shaft can be inserted and removed by the telescopic movement of the telescopic portion. Moreover, the connection between the connecting plate and the pin shaft is realized through the threaded connecting member, enabling quick disassembly and assembly, with a simple structure and low cost.

[0019] In an alternative embodiment, the driving unit is a telescopic cylinder.

[0020] Beneficial effects: The axis of the telescopic cylinder coincides with the axis of the pin shaft. The telescopic cylinder can expand and contract along the axis of the pin shaft. When the telescopic cylinder extends, it pushes the pin shaft into the pin hole on the mechanical body, and when the telescopic cylinder retracts, it pulls the pin shaft out of the pin hole. The telescopic cylinder is flexible in operation and has good stability.

[0021] In an alternative embodiment, the number of the connecting holes is four, and the number of the supporting members is four.

[0022] Beneficial effects: The four supporting members correspond to the four connecting holes one by one. The pin inserting and removing device is connected to the mechanical body through four supporting members, which can not only improve the stability when the pin inserting and removing device is connected to the mechanical body, ensure the smoothness of the pin inserting and removing process, but also avoid wasting materials due to excessive number of supporting members, simplify the structure as much as possible, and improve the convenience of the operation process.

[0023] In a second aspect, the present utility model further provides a working machine, including: the above-mentioned pin inserting and removing device. Since the working machine includes the pin inserting and removing device and has the same effects as the pin inserting and removing device, they will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural view of a pin inserting and removing device according to an embodiment of the present utility model;

[0026] Figure 2 For Figure 1 The front view of the shown pin inserting and removing device;

[0027] Figure 3 For Figure 1Side view of the plug-in and pull-out pin device shown;

[0028] Figure 4 is Figure 1 Top view of the plug-in and pull-out pin device shown;

[0029] Figure 5 Schematic structural diagram of the drive unit and the mounting plate after assembly according to an embodiment of the present invention;

[0030] Figure 6 Schematic structural diagram of the mounting plate according to an embodiment of the present invention;

[0031] Figure 7 Schematic structural diagram of the support member mounted on the mechanical body according to an embodiment of the present invention;

[0032] Figure 8 is Figure 7 Partial enlarged schematic diagram of A in

[0033] Figure 9 Schematic structural diagram of the plug-in and pull-out pin device mounted on the mechanical body according to an embodiment of the present invention;

[0034] Figure 10 is Figure 9 Partial enlarged schematic diagram of B in

[0035] Explanation of reference numerals:

[0036] 1. Mounting plate; 101. Connecting hole; 102. Mounting through hole; 103. Connecting support; 2. Support member; 201. First connecting section; 202. Second connecting section; 3. Drive unit; 301. Mounting part; 302. Telescopic part; 303. Connecting part; 304. Second ear plate; 4. Nut; 5. Connecting plate; 501. Mounting hole; 502. First ear plate; 503. Third through hole; 6. Threaded connecting piece; 7. First connecting piece; 10. Mechanical body; 20. Pin shaft. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Although the existing integral plug-in and pull-out pin device solves the problem of pin pulling, the integral pin pulling frame is heavy and the operation convenience is poor. In addition, due to the different sizes of the pin shafts, different pin pulling devices need to be equipped for each pin shaft, and the universality is extremely poor.

[0039] The following will describe embodiments of the present utility model in conjunction with Figures 1 to 10 , and describe the embodiments of the present utility model.

[0040] According to an embodiment of the present utility model, on the one hand, a plug-and-pull pin device is provided, including: a mounting plate 1, a support member 2, and a driving unit 3. The mounting plate 1 is provided with a plurality of connection holes 101, and the plurality of connection holes 101 are circumferentially spaced apart around the mounting plate 1; the number of support members 2 is equal to and corresponds one-to-one with the number of connection holes 101. The first end of each support member 2 is detachably connected to a connection hole 101, and the second end is adapted to be detachably connected to the mechanical body 10; the driving unit 3 includes a mounting portion 301 and a telescopic portion 302. The mounting portion 301 is detachably connected to the mounting plate 1, and the telescopic portion 302 can selectively expand and contract relative to the mounting portion 301. One end of the telescopic portion 302 away from the mounting portion 301 is adapted to be detachably connected to the pin 20.

[0041] Applying the plug-and-pull pin device of this embodiment, by providing connection holes 101 on the mounting plate 1, the support member 2 is detachably connected to the mounting plate 1 through the connection holes 101, and the driving unit 3 is detachably connected to the mounting plate 1 through the mounting portion 301. The whole device is a combined type, with a simple structure, can be quickly disassembled and assembled, and is convenient to carry. When the first end of the support member 2 is connected to the mounting plate 1 and the second end is connected to the mechanical body 10, a fixed connection of the plug-and-pull pin device on the mechanical body 10 is realized. And the number of support members 2 is multiple and corresponds one-to-one with the multiple connection holes 101 on the mounting plate 1. Then the multiple support members 2 are circumferentially distributed around the mounting plate 1, which can improve the connection stability between the plug-and-pull pin device and the mechanical body 10. And the multiple support members 2 can be disassembled and assembled one by one respectively. Compared with the traditional integrally welded plug-and-pull pin device, it is lighter in weight, does not require an auxiliary lifting tool, and can be disassembled and assembled by a single person manually. At the same time, when the telescopic portion 302 of the driving unit 3 is connected to the pin 20, the pin 20 can be driven to move by the telescopic movement of the telescopic portion 302 relative to the mounting portion 301, realizing the insertion and extraction of the pin 20, and the operation is convenient.

[0042] It should be noted that the mechanical body 10 refers to the mechanical structure on the working machine where the pin 20 is installed, which can be a boom, a turntable, etc.; the mechanical body 10 is provided with a pin hole, and the pin 20 is installed in the pin hole; the telescopic direction of the telescopic portion 302 coincides with the axis of the pin 20. By the telescopic movement of the telescopic portion 302 relative to the mounting portion 301, the pin 20 can be smoothly driven to move along its axis, thereby realizing the extraction or insertion of the pin 20.

[0043] In one embodiment, the number of connection holes 101 is four, and the number of support members 2 is four. The four support members 2 correspond to the four connection holes 101 one by one. The plugging and unplugging pin device is connected to the mechanical body 10 through the four support members 2, which can not only improve the stability when the plugging and unplugging pin device is connected to the mechanical body 10, ensure the smoothness of the plugging and unplugging pin process, but also avoid wasting materials due to too many support members 2, simplify the structure as much as possible, and improve the convenience of the operation process. Preferably, the mounting plate 1 is quadrilateral, and the four connection holes 101 are respectively located at the four corners of the quadrilateral.

[0044] In one embodiment, external threads are respectively formed at both ends of the support member 2 to form a first connection section 201 and a second connection section 202. By forming external threads at both ends of the support member 2, the support member 2 can be threadedly connected to the mechanical body 10 and the mounting plate 1. The thread structure is convenient to process, easy to connect, and has good stability after connection. It should be noted that at least the cross-sections of the first connection section 201 and the second connection section 202 on the support member 2 are circular to facilitate threaded connection.

[0045] In one embodiment, the support member 2 is a support rod. The support rod has a simple structure, is easy to process, has a small weight, and low cost. Preferably, the support rod is a round rod. Further preferably, the material of the support member 2 is steel. Round steel is easy to obtain, has a low cost, high strength, and high reliability.

[0046] In one embodiment, the plugging and unplugging pin device further includes: nuts 4. The number of nuts 4 is twice the number of support members 2. The first connection section 201 can be selectively inserted into the connection hole 101, and one nut 4 is sleeved on each side of the mounting plate 1 on the first connection section 201 to lock the support member 2 on the mounting plate 1. Two nuts 4 are sleeved on the first connection section 201 of each support member 2 to form a pair of opposed nuts. One of the two nuts 4 is located on one side of the mounting plate 1 and the other is located on the other side of the mounting plate 1. By screwing the two nuts 4, the first connection section 201 can be locked on the mounting plate 1, that is, the support member 2 is locked on the mounting plate 1. The structure is simple, the operation is convenient, and the locking force is good. And by adjusting the position of the nut 4 on the first connection section 201 along the axial direction of the support member 2, the distance between the mounting plate 1 and the mechanical body 10 can be adjusted, so as to match the unplugging stroke of different pins 20, expand the adaptation range of the plugging and unplugging pin device, and have strong versatility. It should be noted that the first connection section 201 is inserted into the connection hole 101 and the end of the first connection section 201 away from the second connection section 202 extends out of the connection hole 101 to facilitate the nut 4 to be sleeved on the first connection section 201.

[0047] It should be noted that second threaded holes are provided on the outer periphery of the mechanical body 10 around the pin shaft holes, so that the second connecting section 202 of the support member 2 is threadedly connected to the second threaded holes, realizing the detachable connection between the support member 2 and the mechanical body 10, which is convenient to operate and has reliable connection. Optionally, threaded holes can be directly tapped on the mechanical body 10; or a fixing plate can be welded on the mechanical body 10, and threaded holes are opened on the fixing plate.

[0048] In one embodiment, the connection hole 101 is an oblong hole. It should be noted that the sizes of the pin shafts 20 in different parts of different vehicle models are different, so the distances from the axes of the second threaded holes opened on the mechanical body 10 to the axis of the pin shaft 20 are different. By setting the connection hole 101 as an oblong hole, the position of the support member 2 in the oblong hole can be adjusted as needed, realizing the adjustment of the distance between the support members 2 in the radial direction of the pin shaft 20, so as to realize the matching of the support member 2 with different models of pin shafts 20, ensuring that the support member 2 can be connected to the second threaded holes opened on the mechanical body 10, thereby enhancing the versatility of the pin inserting and extracting device.

[0049] It should be noted that by setting the connection hole 101 as an oblong hole, the size of the support frame composed of several support members 2 and the mounting plate 1 in the radial direction of the pin shaft 20 can be adjusted, so as to be applicable to pin shafts 20 with different diameters; by setting each support member 2 to be locked on the mounting plate 1 by a set of opposing nuts, the size of the support frame in the axial direction of the pin shaft 20 can be adjusted, so as to be applicable to pin shafts with different lengths; combining the above two points, the three-joint pin shafts of all-terrain cranes with a capacity of 300 - 900 tons can be automatically inserted and extracted through this device, and the versatility is strong.

[0050] In one embodiment, mounting through holes 102 are opened on the mounting plate 1, and the mounting part 301 is detachably connected to the side of the mounting plate 1 away from the support member 2, and the telescopic part 302 selectively passes through the mounting through holes 102 and then is connected to the pin shaft 20. The mounting part 301 and the support member 2 are respectively located on opposite sides of the mounting plate 1, and the telescopic part 302 can extend to the side where the support member 2 is located after passing through the mounting through holes 102 on the mounting plate 1, which can relatively reduce the length of the support member 2, reduce costs, and facilitate the installation of the driving unit 3.

[0051] In one embodiment, the mounting through holes 102 are located at the center position of the mounting plate 1, and several connection holes 101 are arranged around the mounting through holes 102. When the telescopic part 302 of the driving unit 3 extends out, the telescopic part 302 is located in the space surrounded by several support members 2, and the stability is good during the process of the telescopic part 302 driving the pin shaft 20 to move after being connected to the pin shaft 20.

[0052] In one embodiment, a connection support 103 is fixedly arranged on one side of the mounting plate 1. The connection support 103 is arranged close to the mounting through-hole 102. A first through-hole is formed in the connection support 103. A connection part 303 is fixedly arranged on the mounting part 301. A second through-hole corresponding to the first through-hole is formed in the connection part 303. The plug-in and pull-out pin device further includes a first connecting piece 7. The first connecting piece 7 detachably passes through the first through-hole and the second through-hole to connect the connection support 103 and the connection part 303. By arranging the connection support 103 on the mounting plate 1 and forming the first through-hole in the connection support 103, arranging the connection part 303 on the mounting part 301 and forming the second through-hole in the connection part 303, and then passing the first connecting piece 7 through the first through-hole and the second through-hole in sequence, the connection part 303 can be connected to the connection support 103 through the first connecting piece 7. The structure is simple and convenient to operate.

[0053] In one embodiment, the first connecting piece 7 is a plug pin. The plug pin has a simple structure, is convenient for disassembly and assembly, and has high connection reliability.

[0054] Preferably, the connection support 103 includes two first connecting plates arranged at intervals. The connection part 303 is a second connecting plate. The second connecting plate is inserted between the two first connecting plates. The second connecting plate is fixed between the two first connecting plates through the first connecting piece 7, so as to realize the fixed connection between the connection part 303 and the connection support 103, further increasing the connection stability.

[0055] In one embodiment, the mounting part 301 of the driving unit 3 is located on the first side of the mounting plate 1, the support member 2 is located on the second side of the mounting plate 1, the connection support 103 is arranged on the first side of the mounting plate 1, the first end of the mounting part 301 is far from the mounting plate 1 and the second end abuts against the first side of the mounting plate 1, and the telescopic part 302 extends out from the second end of the mounting part 301.

[0056] In one embodiment, the plugging and unplugging pin device further includes: a connecting plate 5, which is detachably connected to the end of the telescopic part 302 far from the mounting part 301. An installation hole 501 is formed in the connecting plate 5, and a first threaded hole is formed in the end face of the pin shaft 20. The installation hole 501 is adapted to correspond to the first threaded hole; a threaded connecting member 6, which is adapted to pass through the installation hole 501 and then into the first threaded hole. By forming the installation hole 501 corresponding to the first threaded hole on the pin shaft 20 on the connecting plate 5, when the threaded connecting member 6 passes through the installation hole 501 and then into the first threaded hole on the pin shaft 20, the fixed connection between the connecting plate 5 and the pin shaft 20 can be realized. Further, by connecting the end of the telescopic part 302 far from the mounting part 301 to the connecting plate 5, the connection between the telescopic part 302 and the pin shaft 20 is realized, so that the pin shaft 20 can be plugged and unplugged by the telescopic movement of the telescopic part 302. Moreover, the connecting plate 5 and the pin shaft 20 are connected by the threaded connecting member 6, which can realize quick disassembly and assembly, has a simple structure and a low cost.

[0057] In one embodiment, the threaded connecting member 6 is a bolt. The bolt has high strength, reliable connection, low cost and is easy to obtain. It can be understood that as an alternative embodiment, the threaded connecting member 6 can also be a screw, which can also realize the threaded connection with the first threaded hole on the pin shaft 20.

[0058] In one embodiment, a first ear plate 502 is formed on the side of the connecting plate 5 far from the pin shaft 20. A third through hole 503 is formed in the first ear plate 502. A second ear plate 304 is provided at the end of the telescopic part 302 far from the mounting part 301. A fourth through hole is formed in the second ear plate 304. The fourth through hole corresponds to the third through hole 503. The plugging and unplugging pin device further includes a second connecting member, which is detachably passed through the fourth through hole and the third through hole 503 to connect the telescopic part 302 and the connecting plate 5. Preferably, the second connecting member is a plug pin, which has a simple structure, is easy to install and has high reliability.

[0059] In one embodiment, the driving unit 3 is a telescopic cylinder. The axis of the telescopic cylinder coincides with the axis of the pin shaft 20. The telescopic cylinder can expand and contract along the axis of the pin shaft 20. When the telescopic cylinder extends, it pushes the pin shaft 20 into the pin hole on the mechanical body 10. When the telescopic cylinder retracts, it pulls the pin shaft 20 out of the pin hole. The telescopic cylinder is flexible in operation and has good stability. Specifically, the telescopic cylinder can be an oil cylinder, a pneumatic cylinder or an electric cylinder, etc. Preferably, the telescopic cylinder is a hydraulic cylinder, which shares a set of hydraulic system with the working machine. When the plugging and unplugging pin device needs to be used, the hydraulic cylinder can be connected to the hydraulic system of the working machine.

[0060] The assembly and use process of the plugging and unplugging pin device in this embodiment is as follows:

[0061] First, the driving unit 3 is connected to the mounting plate 1 through a pin; then, the second connecting sections 202 of the four support members 2 are connected to the second threaded holes on the machine body 10; next, the connecting plate 5 is connected to the first threaded hole on the pin shaft 20 through a bolt; subsequently, the mounting plate 1 is sleeved on the first connecting section 201 of the support member 2 through the connecting hole 101, and the driving unit 3 connected to the mounting plate 1 is located on the side of the mounting plate 1 away from the support member 2, and the four support members 2 are respectively locked on the mounting plate 1 through a set of opposing nuts; after the telescopic part 302 extends out of the mounting part 301, it is connected to the connecting plate 5 through a pin, completing the installation of the pin inserting and removing device on the machine body 10 and the connection with the pin shaft 20; finally, by driving the telescopic part 302 to reciprocate, the insertion and removal of the pin can be realized.

[0062] According to an embodiment of the present invention, on the other hand, a working machine is further provided, including: the above-mentioned pin inserting and removing device. The working machine includes but is not limited to excavators, cranes, pile drivers, mixers, etc.

[0063] Taking a crane as an example to illustrate this embodiment, as cranes develop towards larger tonnage and extra-large tonnage, accessories such as the boom and luffing cylinder need to be disassembled before the crane drives on the road. Therefore, it is necessary to insert and remove the pin shafts connected to these accessories. The pin inserting and removing device of this embodiment consists of four round steel bars and a mounting plate 1 to form a detachable support frame. The two ends of the round steel bars are respectively provided with external threads, and the round steel bars are locked to the mounting plate through nuts, which can be quickly disassembled, solving the problems of the traditional integrally welded pin inserting and removing device, such as heavy weight, inconvenient operation, and poor versatility.

[0064] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A plug-in and unplug pin device, characterized in that, Comprising: An installation plate (1) is provided with a plurality of connection holes (101), and the plurality of connection holes (101) are spaced circumferentially around the installation plate (1). Support members (2), the number of the support members (2) is equal to and corresponds one-to-one with the number of the connection holes (101), and the first end of each support member (2) is detachably connected to one connection hole (101) and the second end is adapted to be detachably connected to the mechanical body (10). A drive unit (3) includes an installation part (301) and a telescopic part (302), the installation part (301) is detachably connected to the installation plate (1), the telescopic part (302) is selectively telescopic relative to the installation part (301), and one end of the telescopic part (302) far from the installation part (301) is adapted to be detachably connected to a pin shaft (20).

2. The plug and unplug pin device according to claim 1, characterized in that Both ends of the support member (2) are respectively configured with external threads to form a first connection section (201) and a second connection section (202).

3. The plug-in and unplugging pin device according to claim 2, wherein, The plug and pull pin device further includes: nuts (4), the number of the nuts (4) is twice the number of the support members (2), the first connection section (201) is selectively inserted into the connection hole (101), and one nut (4) is sleeved on each side of the installation plate (1) on the first connection section (201) to lock the support member (2) on the installation plate (1).

4. The plug and unplug pin device according to claim 3, characterized in that, The connection hole (101) is an oblong hole.

5. The plug-in and unplugging pin device according to claim 1, characterized in that, An installation through hole (102) is provided on the installation plate (1), the installation part (301) is detachably connected to the side of the installation plate (1) far from the support member (2), and the telescopic part (302) is selectively passed through the installation through hole (102) and then connected to the pin shaft (20).

6. The plug-in and unplugging pin device according to claim 5, characterized in that, A connection support (103) is fixedly arranged on one side of the installation plate (1), the connection support (103) is arranged close to the installation through hole (102), a first through hole is provided on the connection support (103), a connection part (303) is fixedly arranged on the installation part (301), and a second through hole corresponding to the first through hole is provided on the connection part (303). The plug and pull pin device further includes a first connecting member (7), and the first connecting member (7) is detachably passed through the first through hole and the second through hole to connect the connection support (103) and the connection part (303).

7. The plug-in and unplugging pin device according to claim 1, characterized in that, The plug and pull pin device further includes: A connecting plate (5), the connecting plate (5) is detachably connected to one end of the telescopic part (302) far from the installation part (301), an installation hole (501) is provided on the connecting plate (5), a first threaded hole is provided on the end face of the pin shaft (20), and the installation hole (501) is adapted to correspond to the first threaded hole. A threaded connecting member (6) is adapted to pass through the installation hole (501) and then into the first threaded hole.

8. The plug-in and unplugging pin device according to claim 1, characterized in that, The drive unit (3) is a telescopic cylinder.

9. The plug-in and unplugging pin device according to any one of claims 1 to 8, characterized in that, The number of the connection holes (101) is four, and the number of the support members (2) is four.

10. An earthmoving machine, characterized in that, Comprising: The plug and unplug pin device according to any one of claims 1 to 9.

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