Mechanical connector and method for disassembling it, disassembly robot

Abstract

The application discloses a mechanical connector, a dismounting method thereof and a dismounting robot, the connector comprising a wedge-shaped block and an upper assembly part and a lower assembly part connected through a stepped shaft; the lower assembly part comprising a right second connecting body and a left second connecting body, the right second connecting body and the left second connecting body being provided with limiting holes at one end close to the upper assembly part; the upper assembly part comprising a right first connecting body and a left first connecting body, the end faces of the right first connecting body and the left first connecting body and the limiting holes forming a closed space; the wedge-shaped block being detachably connected in the closed space, and when the wedge-shaped block is connected in the closed space, the rotation between the upper assembly part and the lower assembly part is limited. In the application, the structure is simple and the weight is light; and in the process of replacing a machine tool, only one wedge-shaped block needs to be dismounted, thereby saving time and effort.

Description

A mechanical connector and its disassembly method, and a demolition robot. Technical Field

[0001] This invention relates to the field of quick connector technology, specifically to a mechanical connector and its disassembly method, and a disassembly robot. Background Technology

[0002] In recent years, demolition robots have been widely used in construction and rescue operations in confined spaces. By optimizing the operating system, they can achieve 3 to 4 times the work efficiency of excavators of the same tonnage. To adapt to more operating scenarios, demolition robots usually need to change the working attachments at the front of the boom, generally using quick connectors to quickly switch between different attachments.

[0003] A quick connector is an intermediate connecting device added between the forearm and linkage of a demolition robot and its attachments, primarily used to enable rapid switching between different attachments. Traditional quick connectors are complex in structure and heavy in weight. Due to the limited load-bearing capacity of the demolition robot's boom, it is difficult to install a heavy quick connector while still ensuring the normal use of the attachments. To meet the requirements of demolition robots for quick connectors, a lightweight and simple quick connector needs to be developed.

[0004] Research revealed that current quick connectors have complex structures. The pins connecting the working equipment and the tool are connected to the two main structures by bolts at both ends, resulting in a total of four bolt connection points. To restrict the degree of freedom between the two main structures, two more bolts are needed to fix the main structures. Therefore, this type of quick connector requires at least six bolts, which makes it time-consuming when changing tools. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical connector and its disassembly method, as well as a disassembly robot, to solve the problems of complex connector structure and long time consumption when replacing tools in the prior art.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0007] In a first aspect, this application discloses a mechanical connector, including a wedge block and an upper assembly and a lower assembly rotatably connected by a stepped shaft;

[0008] The lower assembly includes a right second connector and a left second connector, and each of the right second connector and the left second connector is provided with a limiting hole at one end near the upper assembly; the upper assembly includes a right first connector and a left first connector, and a closed space is formed between the end face of the right first connector and the end face of the left first connector and the limiting hole.

[0009] The wedge block is detachably connected to the enclosed space. When the wedge block is connected to the enclosed space, the end face of the wedge block and the right first connector and / or the left first connector are in contact, and the end face of the right first connector and / or the left first connector is in contact with the first limiting block on the right second connector and / or the left second connector, so that the rotation between the upper assembly and the lower assembly is restricted.

[0010] Furthermore, a first limiting block is provided on the side of the right second connector near the left second connector;

[0011] When the wedge block is connected in a closed space, the end faces of the first limiting block and the right first connecting body are in contact, and the contact points of the limiting block and the right first connecting body and the contact points of the wedge block and the right first connecting body are respectively located on both sides of the stepped shaft.

[0012] Furthermore, a second closed space is formed between the end face of the right first connector and the limiting hole of the right second connector; a first closed space is formed between the end face of the left first connector and the limiting hole of the left second connector, and the width of the first closed space is greater than that of the second closed space.

[0013] When the wedge block is connected to the first enclosed space and the enclosed space, the end face of the wedge block and the right first connector are in contact.

[0014] Furthermore, one end of the wedge-shaped block is provided with a second limiting block, and the other end is provided with a through hole; the left second connector is provided with a waist hole on the side away from the right second connector;

[0015] The second limiting block of the wedge block contacts the side wall of the second connecting body on the right side, and the elastic pin passes through the waist hole and the through hole to fix the wedge block in the first closed space and the closed space.

[0016] Furthermore, the ends of the right first connector, the left first connector, the right second connector, and the left second connector are all provided with stepped holes for connecting the stepped shaft.

[0017] Furthermore, the upper assembly also includes a first pin, with the right first connector and the left first connector connected to both ends of the first pin; the lower assembly also includes a second pin, with the right second connector and the left second connector connected to both ends of the second pin.

[0018] Furthermore, both ends of the first pin are provided with first threaded holes, and the pin connecting ends of the right first connector and the left first connector are provided with connecting stepped holes. The two ends of the first pin are respectively inserted into the connecting stepped holes of the right first connector and the left first connector and fixed by bolts.

[0019] The second pin has a second threaded hole at both ends. The pin connecting ends of the right second connector and the left second connector have connecting stepped holes. The two ends of the second pin are respectively inserted into the connecting stepped holes of the right second connector and the left second connector and fixed by bolts.

[0020] Furthermore, grooves are provided in the connecting step holes of the right first connector, the left first connector, the right second connector, and the left second connector;

[0021] Both ends of the first pin and both ends of the second pin are provided with bosses, and the bosses and the grooves are connected by insertion.

[0022] Secondly, this application discloses a method for disassembling a mechanical connector, including a mechanical connector as described in any of the first aspects, installed between the end of the arm of a mechanical working device and the tool. The disassembly method includes:

[0023] Remove the wedge block from the enclosed space to release the rotational restriction between the upper and lower assemblies;

[0024] Rotate the upper or lower assembly to shorten the distance between the first pin on the upper assembly and the second pin on the lower assembly, so that the right first connector and left first connector at the end of the first pin and the right second connector and left second connector at the end of the second pin in the connector are disengaged from the front and rear hook-type structure of the machine.

[0025] Thirdly, this application discloses a demolition robot, including the mechanical connector described in any of the first aspects.

[0026] According to the above technical solution, the beneficial effects of the present invention are as follows:

[0027] The connector of this application includes a rotatable upper assembly and a lower assembly, and is designed with a wedge block to restrict the rotation of the upper and lower assemblies. It has a simple structure and is lightweight. When the machine connected by the connector of this application needs to be replaced, the rotational freedom of the upper and lower assemblies can be restored simply by pulling the wedge block out of the enclosed space. Then, the upper or lower assembly is rotated to disengage the right first connector, left first connector, right second connector, and left second connector from the front and rear hook-shaped structure of the machine, thus realizing the disassembly of the machine. The process of replacing the machine only requires removing one wedge block, which saves time and effort. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the overall assembly of the connector of this application;

[0029] Figure 2 is an exploded structural diagram of the connector of this application;

[0030] Figure 3 is a structural schematic diagram of the pin shaft in this application;

[0031] Figure 4 is a schematic diagram of the first connector in this application;

[0032] Figure 5 is a schematic diagram of the second connector in this application;

[0033] Figure 6 is a schematic diagram of the wedge block in this application;

[0034] Figure 7 is a schematic diagram of the connector structure in this application;

[0035] Figure 8 is a structural schematic diagram of the connector installation tool in this application. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] It should be noted that in the description of this invention, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and not to require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this invention refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0038] As shown in Figures 1 to 8, this application discloses a mechanical connector, including a wedge block 9 and an upper assembly A and a lower assembly B rotatably connected by a stepped shaft 1; the lower assembly B includes a right second connector 6 and a left second connector 8, and each of the right second connector 6 and the left second connector 8 has a limiting hole at one end near the upper assembly A; the upper assembly A includes a right first connector 5 and a left first connector 7, and a closed space is formed between the end faces of the right first connector 5 and the left first connector 7 and the limiting hole; the wedge block 9 is detachably connected in the closed space, and when the wedge block 9 is connected in the closed space, the end faces of the wedge block 9 and the right first connector 5 and / or the left first connector 7 are in contact, and the end faces of the right first connector 5 and / or the left first connector 7 are in contact with the first limiting block on the right second connector 6 and / or the left second connector 8, so that the rotation between the upper assembly A and the lower assembly B is restricted.

[0039] In this application, the rotation restriction of the upper assembly A and the lower assembly B is achieved through the wedge block 9 and the limiting block structure on the connecting body. Furthermore, the contact point between the limiting block structure and the end face of the connecting body serves as a limiting point, and the contact point between the wedge block 9 and the end face of the connecting body serves as another contact point. These two contact points are located on opposite sides of the stepped shaft 1, thereby restricting the rotation of the stepped shaft 1 and thus limiting the rotation between the upper assembly A and the lower assembly B.

[0040] The joint limiting on both sides of the stepped shaft ensures the stability of the connector after installation, preventing rotation between the upper assembly A and the lower assembly B.

[0041] In one specific embodiment, the wedge block 9 and the end face of the right first connector 5 contact each other as a limiting point. In other embodiments, the wedge block 9 and the end face of the left first connector 7 contact each other as a limiting point. Alternatively, the wedge block 9 and the end face of the right first connector 5 may contact each other and the end face of the left first connector 7 together as a limiting point.

[0042] In one embodiment, a first limiting block 6-3 is provided on the side of the right second connector 6 near the left second connector 8; when the wedge block 9 is connected in a closed space, the first limiting block 6-3 and the end face of the right first connector 5 contact each other as a second limiting point. In other embodiments, the limiting block can also be provided on the side of the left second connector 8 near the right second connector 6, in which case the limiting block on the left first connector 7 contacts the limiting block on the left second connector 8 as a second limiting point. Similarly, in some embodiments, limiting blocks can also be provided on both the side of the left second connector 8 near the right second connector 6 and the side of the left second connector 8 near the right second connector 6, in which case the two contact points between the right first connector 5 and the left first connector 7 and the limiting block contact each other serve as second limiting points.

[0043] In this application, the wedge block can be fixed by conventional elastic pins and end protrusions for limiting. The following is a detailed description of the content of this application through a specific embodiment.

[0044] As shown in Figures 1 and 2, a mechanical quick connector assembly consists of a stepped shaft 1, a first pin 2, a second pin 3, an anti-loosening washer 4, a right first connector 5, a right second connector 6, a left first connector 7, a left second connector 8, a wedge block 9, a bolt 10, and an elastic pin 11.

[0045] As shown in Figure 3, the first pin 2 and the second pin 3 have the same structural dimensions. Here, only the structure of the first pin is described in detail. The first pin 2 is a symmetrical structural component with a first boss 2-1 of the same structural dimensions at both ends and a first threaded hole 2-2 of the same structural dimensions. Similarly, the second pin 3 is a symmetrical structural component with a second boss 3-1 of the same structural dimensions and a second threaded hole 3-2 of the same structural dimensions at both ends.

[0046] As shown in Figures 4 and 5, the right first connector 5, the left first connector 7, the right second connector 6, and the left second connector 8 all include a cylindrical pin connecting end and a plate-shaped main body. The pin connecting end and the main body end are integrally formed.

[0047] The main features of the right-side first connector 5 are a right-side first groove 5-1 and a right-side first stepped shaft hole 5-2. The right-side first groove 5-1 is located in the connecting stepped hole at the pin connection end for installing the stepped shaft 1, and the right-side first stepped shaft hole 5-2 is located on the plate-shaped main body. The main features of the left-side first connector 7 are a left-side first groove 7-1 and a left-side first stepped shaft hole 7-2. The left-side first groove 7-1 is located in the connecting stepped hole at the pin connection end for installing the stepped shaft 1, and the left-side first stepped shaft hole 7-2 is located on the plate-shaped main body. The right-side first groove 5-1 and the left-side first groove 7-1, as well as the right-side first stepped shaft hole 5-2 and the left-side first stepped shaft hole 7-2, have a symmetrical structure and identical structural dimensions.

[0048] The main difference between the right first connector 5 and the left first connector 7 lies in the different dimensions of the end face 5-3 of the right first connector and the end face 7-3 of the left first connector 7. The dimension of end face 5-3 in the width direction is larger than that of end face 7-3 in the width direction, so that the closed space formed between the end face and the limiting hole is different. That is, the closed space formed between end face 7-3 and the limiting hole is larger than the closed space formed between end face 5-3 and the limiting hole.

[0049] As shown in Figure 5, the main features of the right-side second connecting body 6 are the right-side second groove 6-1, the right-side second stepped shaft hole 6-3, and the right-side second limiting hole 6-4. The right-side second groove 6-1 is located in the connecting stepped hole for installing the stepped shaft 1 at the pin connection end, while the right-side second stepped shaft hole 6-3 and the right-side second limiting hole 6-4 are located on the plate-shaped main body. The main features of the left-side second connecting body 8 are the left-side second groove 8-1, the left-side second stepped shaft 8-3, and the left-side second limiting hole 8-4. It and the right-side second connecting body 6 have a symmetrical structure and the same structural dimensions.

[0050] The inner side of the right second connector 6, that is, the side near the left second connector 8, is provided with a limiting block 6-2 to restrict the movement of the right first connector 5. The outer side of the left second connector 8 is provided with a positioning waist hole 8-2 to restrict the left and right movement of the wedge block 9.

[0051] As shown in Figures 1 and 2, the left end face of the first pin 2 is nested with the left first connecting body 7. To prevent them from rotating relative to each other, the first boss 2-1 on the left end face of the first pin 2 is engaged with the left first groove 7-1 on the left first connecting body 7. The bolt 10 passes through the anti-loosening washer 4 and the left first connecting body 7 in sequence and is finally screwed into the first threaded hole 2-2 on the left end face of the first pin 2 to fasten the left first connecting body 7 and the first pin 2.

[0052] The right end face of the first pin 2 is nested with the right first connecting body 5, and the first boss 2-1 on the right end face of the first pin 2 is engaged with the right first groove 5-1 on the right first connecting body 5 to prevent them from rotating relative to each other. The bolt 10 passes through the anti-loosening washer 4 and the right first connecting body 5 in sequence and is finally screwed into the first threaded hole 2-2 on the right end face of the first pin 2 to fasten the right first connecting body 5 and the first pin 2.

[0053] As shown in Figures 1 and 2, based on the same principle, the left end face of the second pin 3 is nested with the left second connecting body 8, and the second boss 3-1 on the left end face of the second pin 3 is embedded in the left second groove 8-1 on the left second connecting body 8 to prevent them from rotating relative to each other. The bolt 10 passes through the anti-loosening washer 4 and the left second connecting body 8 in sequence and is finally screwed into the second threaded hole 3-2 on the left end face of the second pin 3 to fasten the left second connecting body 8 and the second pin 3.

[0054] The right end face of the second pin 3 is nested with the right side second connector 6. To prevent them from rotating relative to each other, the second boss 3-1 on the right end face of the second pin 3 is engaged with the right side second groove 6-1 on the right side second connector 6. The bolt 10 passes through the anti-loosening washer 4 and the right side second connector 6 in sequence and is finally screwed into the second threaded hole 3-2 on the right end face of the second pin 3 to fasten the right side second connector 6 and the second pin 3.

[0055] As shown in Figures 2 and 3, the left end face of the stepped shaft 1 passes sequentially through the left first stepped hole 7-2 of the left first connecting body 7 and the left second stepped hole 8-3 of the left second connecting body 8. The right end face of the stepped shaft 1 passes sequentially through the right first stepped hole 5-2 of the right first connecting body 5 and the right second stepped hole 6-3 of the right second connecting body 6. At this time, the upper part, composed of the left first connecting body 7, the first pin 2, the right first connecting body 5, the anti-loosening washer 4, and the bolt 10, and the lower part, composed of the left second connecting body 8, the second pin 3, the right second connecting body 6, the anti-loosening washer 4, and the bolt 10, can rotate around the stepped shaft 1.

[0056] As shown in Figure 7, a closed limiting space I is formed by the right end face 5-3 on the right first connecting body 5 and the right second 6-4 on the right second connecting body 6, and a closed space II is formed by the left end face 7-3 on the left first connecting body 7 and the left second 8-4 on the left second connecting body 8. The closed space I is 5mm larger in width than the closed space II. The wedge block 9 sequentially fills both the closed spaces II and I. The elastic pin 11 sequentially passes through the waist hole 8-2 on the left second connecting body 8 and the through hole 9-2 on the wedge block 9, connecting the left second connecting body 8 and the wedge block 9 together and restricting the left and right movement of the wedge block 9. Additionally, a second limiting block 9-1 is provided on the wedge block 9 to similarly restrict its movement.

[0057] This invention primarily addresses the problems of heavy weight, complex connection process, and poor applicability of quick connectors. The mechanical quick connector described in this invention features a simple structure, lightweight connecting components, and employs a single wedge block locking structure with a spring pin for secure locking. The connecting pin is tightened with bolts at both ends, achieving high connection reliability and a simple connection process, thus meeting the requirements of demolition robots for quick connectors.

[0058] In one embodiment of this application, a method for disassembling a mechanical connector is also disclosed, including a mechanical connector installed between the arm end of a mechanical working device and a tool. The disassembly method includes: removing the wedge block 9 in the enclosed space to release the rotation restriction between the upper assembly A and the lower assembly B; rotating the upper assembly A or the lower assembly B to shorten the distance between the first pin 2 on the upper assembly A and the second pin 3 on the lower assembly B, so that the right first connector 5 and the left first connector 7 at the end of the first pin 2 and the right second connector 6 and the left second connector 8 at the end of the second pin 3 in the connector are disengaged from the front and rear hook-shaped structure of the tool.

[0059] When the mechanical quick connector of this application is connected to the tool (breaker), it is connected to the end of the working device arm through the first pin 2 and the second pin 3, and connected to the front and rear hook-shaped structure on the working tool (breaker) through the right first connecting body 5, the right second connecting body 6, the left first connecting body 7 and the left second connecting body 8. The mechanical quick connector is fixedly connected to the tool (breaker) by moving the wedge block 9.

[0060] As shown in Figures 7 and 8, the disassembly process of the mechanical quick connector and the working attachment is as follows: by removing the elastic pin, the wedge block 9 is removed from the right side; at this time, the distance between the first pin 2 on the left first connecting body 7 and the right first connecting body 5 and the second pin 3 on the left second connecting body 8 and the right second connecting body 6 can be reduced; operate the connecting rod and the forearm to disengage the connecting body on the mechanical quick connector from the front and rear hook-shaped structure of the working tool (breaker hammer).

[0061] In one embodiment, this application also discloses a demolition robot, including the mechanical connector provided in any embodiment.

[0062] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A mechanical connector, characterized in that, The assembly includes a wedge block (9) and an upper assembly (A) and a lower assembly (B) rotatably connected by a stepped shaft (1); the lower assembly (B) includes a right second connector (6) and a left second connector (8), and each of the right second connector (6) and the left second connector (8) has a limiting hole at one end near the upper assembly (A); the upper assembly (A) includes a right first connector (5) and a left first connector (7), and a closed space is formed between the end face of the right first connector (5) and the end face of the left first connector (7) and the limiting hole; the wedge block (9) is detachably connected in the closed space, and when the wedge block (9) is connected in the closed space, the wedge block (9) and the right first connector (5) and / or the left first connector (7) are connected in a closed space. The end faces of the connector (7) are in contact, and the end faces of the right first connector (5) and / or the left first connector (7) are in contact with the first limiting blocks on the right second connector (6) and / or the left second connector (8) so that the rotation between the upper assembly (A) and the lower assembly (B) is restricted; the right second connector (6) is provided with a first limiting block (6-2) on the side face near the left second connector (8); when the wedge block (9) is connected in the closed space, the first limiting block (6-2) and the end faces of the right first connector (5) are in contact, and the contact points of the first limiting block (6-2) and the right first connector (5) and the wedge block (9) and the right first connector (5) are respectively located on both sides of the stepped shaft (1).

2. The mechanical connector according to claim 1, characterized in that, A second closed space (II) is formed between the end face (5-3) of the right first connector (5) and the limiting hole of the right second connector (6); a first closed space (I) is formed between the end face (7-3) of the left first connector (7) and the limiting hole of the left second connector (8), and the width of the first closed space (I) is greater than that of the second closed space (II); when the wedge block (9) is connected in the first closed space (I) and the second closed space (II), the wedge block (9) and the end face of the right first connector (5) are in contact.

3. The mechanical connector according to claim 1, characterized in that, One end of the wedge block (9) is provided with a second limiting block (9-1), and the other end is provided with a through hole (9-2); the left second connector (8) is provided with a waist hole (8-2) on the side away from the right second connector (6); the second limiting block (9-1) of the wedge block (9) and the side wall of the right second connector (6) are in contact, and the elastic pin (11) passes through the waist hole (8-2) and the through hole (9-2) so that the wedge block (9) is fixed in the first closed space (I) and the second closed space (II).

4. The mechanical connector according to claim 1, characterized in that, The ends of the right first connector (5), the left first connector (7), the right second connector (6) and the left second connector (8) are all provided with stepped holes for connecting the stepped shaft (1).

5. The mechanical connector according to claim 1, characterized in that, The upper assembly (A) further includes a first pin (2), and the right first connector (5) and the left first connector (7) are connected to the two ends of the first pin (2); the lower assembly (B) further includes a second pin (3), and the right second connector (6) and the left second connector (8) are connected to the two ends of the second pin (3).

6. The mechanical connector according to claim 5, characterized in that, The first pin (2) has a first threaded hole (2-2) at both ends. The pin connecting ends of the right first connector (5) and the left first connector (7) have connecting stepped holes. The two ends of the first pin (2) are respectively inserted into the connecting stepped holes of the right first connector (5) and the left first connector (7) and fixed by bolts (10). The second pin (3) has a second threaded hole (3-1) at both ends. The pin connecting ends of the right second connector (6) and the left second connector (8) have connecting stepped holes. The two ends of the second pin (3) are respectively inserted into the connecting stepped holes of the right second connector (6) and the left second connector (8) and fixed by bolts (10).

7. The mechanical connector according to claim 6, characterized in that, The connecting stepped holes of the right first connector (5), the left first connector (7), the right second connector (6), and the left second connector (8) are all provided with grooves; both ends of the first pin (2) and both ends of the second pin (3) are provided with bosses, and the bosses and the grooves are connected by insertion.

8. A method for disassembling a mechanical connector, comprising installing a mechanical connector as described in any one of claims 1-7 between the arm end of a mechanical working device and a tool, characterized in that, The disassembly method includes: removing the wedge block (9) in the enclosed space to release the rotation restriction between the upper assembly (A) and the lower assembly (B); rotating the upper assembly (A) or the lower assembly (B) to shorten the distance between the first pin (2) on the upper assembly (A) and the second pin (3) on the lower assembly (B) so that the right first connector (5) and the left first connector (7) at the end of the first pin (2) and the right second connector (6) and the left second connector (8) at the end of the second pin (3) in the connector are disengaged from the front and rear hook structure of the machine.

9. A demolition robot, characterized in that, Including the mechanical connector as described in any one of claims 1-7.

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