Connecting device and shell provided with same

Abstract

The utility model provides a connecting device and a shell provided with the device, the connecting device is used for connecting and fixing an upper shell and a lower shell of a reduction gearbox body, the connecting device comprises a hollow cylinder and a driving part, two through holes are formed in the side wall of the hollow cylinder, and two through holes are formed in the upper end face and the lower end face of the hollow cylinder; a limiting piece is arranged in each of the two through holes in the side wall; the driving piece can move in the hollow cylinder and pass through the two through holes in the end face. The limiting piece comprises a limiting rod, a wedge-shaped block and a compression spring; the driving piece comprises a driving column, an annular plate, a driving rod, a connecting rod and a limiting block; a locking device is further arranged on the upper end face of the hollow cylinder and comprises a baffle, a sliding rod, a wedge-shaped block, a fixing ring and a compression spring; the mode that multiple bolts are connected and fixed in the prior art is abandoned, and the multiple limiting pieces are driven by the driving piece to synchronously operate.

Description

Technical Field

[0001] The present application relates to a connecting device, and in particular to a connecting device and a housing on which the device is installed. Background Art

[0002] The reducer is an independent closed transmission device between the prime mover and the working machine, which is used to reduce the speed and increase the torque to meet the working needs. It is widely used in modern machinery. The reducer is mainly composed of transmission parts, shafts, bearings, housings and their accessories. The housing is also called a reduction box, which is divided into an upper shell and a lower shell. In the prior art, the upper shell and the lower shell are fixed by multiple bolts. Additional tools are required for installation and disassembly. At the same time, the operation is inconvenient, which reduces work efficiency. Utility Model Content

[0003] In order to improve the deficiencies of the prior art, reduce the situation where users use too many tools during assembly and fixation, and improve work efficiency, the present application provides a connecting device and a shell on which the device is installed.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] The present application provides a connecting device, characterized in that the connecting device includes a hollow cylinder and a driving member partially arranged inside the hollow cylinder; two opposite through holes are arranged on the side wall of the hollow cylinder, and two opposite through holes are arranged on the upper and lower end faces of the hollow cylinder, wherein a limiting member is respectively arranged in the two opposite through holes of the side wall; the driving member can move in the hollow cylinder and pass through the two through holes on the end face.

[0006] Furthermore, the limiting member includes: a limiting rod, which is used to be inserted into the through hole of the hollow cylinder; a wedge block, one end of which is connected to the limiting rod; and a compression spring, which is arranged on the limiting rod, one end of which abuts against the inside of the hollow cylinder and the other end abuts against the wedge block.

[0007] Furthermore, the driving member includes a driving column and a driving rod connected in sequence: the driving column is a variable diameter structure, the upper half of which is a cone and the lower half is a cylinder; the driving rod, the driving rod is a cylinder, one end of which is connected to the lower end face of the driving column, and the other end is connected to the end face of the driving surface 505.

[0008] Furthermore, the driving member is also provided with a tension spring and an annular plate, the annular plate is arranged around the driving column in the hollow cylinder, and the annular plate is flush with the lower end surface of the driving column; the tension spring is arranged around the driving rod, one end abuts against the inside of the hollow cylinder, and the other end abuts against the annular plate.

[0009] Furthermore, the driving member also includes a connecting rod and a limit block, the connecting rod is a rectangular parallelepiped; the limit block is a hemispherical structure, and the end surface of the limit block is connected to the upper end surface of the driving column through the connecting rod.

[0010] Furthermore, a locking device is also provided on the upper end surface of the hollow cylinder, and the locking device is connected in sequence with a baffle, a sliding rod and a wedge block, the baffle, the lower end surface of the baffle is parallel to the upper end surface of the hollow cylinder, the end surface of one side of the baffle is flush with the side wall of the hollow cylinder, and the opposite side is abutted against a fixing ring; the sliding rod, the sliding rod is a rectangular structure, connected between the baffle and the wedge block; the wedge block, the non-inclined surface of the wedge block is connected to the sliding rod.

[0011] Furthermore, the locking device also includes: a fixing ring, which is an annular structure with a hollow interior, and the bottom is fixed to the upper end surface of the hollow cylinder, one side of which abuts against the baffle; a compression spring, which is arranged around the sliding rod, one end of which abuts against the wedge block and the other end abuts against the baffle.

[0012] Furthermore, the driving member also includes a connecting rod and a limit block, the connecting rod is a rectangular parallelepiped; the limit block is a rectangular parallelepiped, and the limit block is connected to the upper end surface of the driving column through the connecting rod.

[0013] Furthermore, the through hole formed on the upper end surface of the hollow cylinder is a rectangular through hole.

[0014] The present application also provides a housing on which the connecting device provided in the present application is installed.

[0015] Furthermore, the shell further includes: a lower shell, an upper shell, and a sealing gasket arranged on the upper edge of the lower shell.

[0016] Beneficial effects of this application:

[0017] The present application abandons the method of multiple bolt connection and fixing in the prior art, and drives multiple limit members to operate synchronously through a driving member, and limits or releases the upper shell through multiple limit members, so as to realize the installation and disassembly of the upper shell and the lower shell, which is convenient for connecting the upper and lower shells that need to be installed in combination, such as the starter housing, reduction gear housing, gear box housing, rotary tiller housing, etc., without the aid of additional tools, and is easy to operate, thereby improving work efficiency, and is therefore more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to better understand the present application and do not constitute an improper limitation on the present application.

[0019] Figure 1 A schematic diagram of the structure of the connection device provided in this application;

[0020] Figure 2 A three-dimensional cross-sectional view of the connection device provided for this application;

[0021] Figure 3 A schematic diagram of a box structure provided in an embodiment of the present application and provided with the connecting device installed therein, with the upper shell omitted;

[0022] Figure 4 A schematic diagram of the structure of the connection device provided in this application;

[0023] Figure 5 A three-dimensional cross-sectional view of the connection device provided for this application;

[0024] Figure 6 A schematic diagram of the box structure with the upper shell omitted and the connecting device installed in an embodiment of the present application.

[0025] Description of Reference Numerals

[0026] 1-lower shell, 2-connecting device, 3-through hole, 4-limiting member, 5-driving member, 6-connecting rod, 7-limiting block, 8-through hole, 9-locking device, 12-positioning groove, 13-sealing gasket, 401-limiting rod, 402-wedge block, 403-compression spring, 501-annular plate, 502-driving column, 503-tension spring, 504-driving rod, 505-driving surface, 901-sliding rod, 902-wedge block, 903-baffle, 904-compression spring, 905-fixing ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Example 1

[0029] See also Figure 1 to Figure 2, the embodiment of the present application provides a connection device 2, which includes: a limit member 4, a driving member 5 and a locking device 9. The connection device 2 includes a hollow cylinder, and the side wall of the hollow cylinder is provided with two opposite rectangular through holes 3, and the limit member 4 is arranged in the through hole 3. The number of the limit members 4 is two, which are respectively arranged in the two rectangular through holes 3, and each independent limit member includes a limit rod 401, a wedge block 402 and a compression spring 403. When one end of the limit rod 401 is flush with the side wall of the hollow cylinder, the limit rod 401 is in a fully inserted state based on the through hole 3. The other end of the limit rod 401 is connected to the wedge block 402, and the compression spring 403 is arranged around the limit rod 401. The length of the compression spring 403 in the free state is the length from the inner wall of the hollow cylinder to the wedge block 402 when it is in the fully inserted state. The free state refers to the state when the spring is not subjected to external force. The connecting device 2 is also provided with a driving member 5, which is partially arranged inside the hollow cylinder and includes an annular plate 501, a driving column 502, a tension spring 503, a driving rod 504, a driving surface 505, a connecting rod 6 and a stop block 7. The driving column 502 is a variable diameter structure, which is divided into two parts according to the diameter size, one part is a cylinder at the bottom, and the other part is a frustum at the top, the upper end surface of the frustum is defined as the upper end surface of the driving column 502, and the lower end surface of the cylinder is defined as the lower end surface of the driving column 502. The annular plate 501 is arranged around the driving column 502, and the annular plate 501 is flush with the lower end surface of the driving column 502. The area of ​​the annular plate 501 is exactly the difference between the projection area of ​​the hollow area of ​​the hollow cylinder on the upper end surface or the lower end surface and the area of ​​the lower end surface of the driving column 502, and the annular plate 501 can slide on the inner wall of the hollow cylinder. The driving rod 504 is a cylinder, one end of which is connected to the lower end face of the driving column 502, and the other end is connected to the end face of the driving surface 505. The tension spring 503 surrounds the driving rod 504 and is arranged between the inner wall of the lower end face of the hollow cylinder and the annular plate 501. The driving surface 505 is a flat cylinder, which is convenient for the user to push the driving surface 505 with the finger surface to drive the driving member 5 to slide. The connecting rod 6 is a flat rectangular parallelepiped, and the two end faces with the smallest area are defined as the upper end face and the lower end face. The lower end face is connected to the upper end face of the driving column 502, and the area of ​​the lower end face of the connecting rod 6 completely overlaps with the upper end face of the driving column 502; the upper end face is connected to the limit block 7 at the center of the end face of the limit block 7, and the limit block 7 is a hemisphere. A through hole 8 is opened on the upper end face of the hollow cylinder, and the diameter of the through hole 8 is the same as the diameter of the limit block 7, and the limit block 7 can just pass through the hole 8. The locking device 9 is arranged on the upper end surface of the hollow cylinder, and the locking device includes a sliding rod 901 , a wedge block 902 , a baffle 903 , a compression spring 904 and a fixing ring 905 .The fixing ring 905 is a ring structure with a hollow interior, fixed to the upper end surface of the hollow cylinder, the baffle 903 is arranged close to the fixing ring 905, the lower end surface of the baffle 903 is parallel to the upper end surface of the hollow cylinder, the area of ​​the baffle 903 is exactly the same as the area when the ring structure of the fixing ring 905 is completed, and when one end surface of the baffle 903 is flush with the side wall of the hollow cylinder, the locking device 9 is in a free state, and the other opposite surface of the baffle 903 is connected to a sliding rod 901, which is a rectangular parallelepiped structure, and the other end of the sliding rod 901 is connected to a wedge block 902, and the sliding rod passes through the fixing ring 905. The compression spring 904 of the locking device 9 surrounds the sliding rod 901 and is arranged between the wedge block 902 and the baffle 903. The locking device 9 is placed along the radius direction of the hollow cylinder, and the overall length of the locking device 9 is smaller than the radius of the hollow cylinder. The overall length of the locking device 9 is larger than the difference between the radius of the hollow cylinder and the radius of the through hole 8 opened on the upper end surface of the hollow cylinder.

[0030] See also Figure 3 The embodiment of the present application also provides a shell, which includes a lower shell 1, and 6 connecting devices 2 as described above are arranged on the upper edge of the lower shell 1. The upper edge of the lower shell 1 is provided with a sealing gasket 13 except for the area where the connecting devices 2 are arranged and the groove area. Figure 3 The state shown is the initial state of the lower shell 1. In this state, the upper shell and the lower shell 1 are separated, and the stopper 4 does not leave the hollow cylinder due to external force. When installing, the upper shell is buckled on the lower shell 1, and each connecting device 2 corresponds to and passes through the corresponding installation holes. Figure 2 The state shown in the figure is the initial state of the connecting device 2. Taking a single connecting device 2 as an example, the driving surface 505 is pushed by an external force to drive the driving rod 504 to move vertically upward, wherein the vertically upward direction is Figure 2 In the Z direction indicated by the arrow shown, as the driving rod 504 moves, the annular plate 501 slides in the same direction in the cavity of the hollow cylinder, and the tension spring 503 is stretched by the upward force. In the process of the driving rod 504 moving upward, the driving column 502 forces the wedge blocks 402 of the two stoppers 4 to move leftward and rightward in the horizontal direction, respectively. The horizontal direction to the right is Figure 2In the X direction indicated by the arrow shown, the compression spring 403 is squeezed during the movement, and the wedge block 402 drives the limiting rod 401 to move toward the outside of the hollow cylinder through the through hole 3, thereby forming a limit for the upper shell to prevent the upper shell from separating from the lower shell 1, and the installation can be achieved. As the driving member 5 continues to move, it will eventually pass through the through hole 8. The limit block 7 and the connecting rod 6 at the top of the driving member 5 will pass through the through hole 8 in turn. The limit block 7 contacts with the wedge block 902 of the locking device 9. The wedge block 902 is subjected to external force and is forced to slide to the right in the horizontal direction, driving the sliding rod 901 and the baffle 903 to move to the right in the horizontal direction. During the movement, the compression spring 904 is squeezed. As the driving member 5 continues to move, the limit block 7 will eventually move away from the wedge plate 902, and the compression spring 904 will return to a natural state. The wedge plate 902, the sliding rod 901 and the baffle 903 will move to the initial state in the horizontal direction. The wedge block 902 abuts against the end face of the limit block 7. At this time, the limit block 7 is blocked by the wedge block 902 and cannot naturally retract into the hollow cylinder, thereby realizing the locking of the limit block 7 and keeping the upper shell and the lower shell 1 fixed without being disassembled by external force.

[0031] When disassembling, use external force to pull the baffle 903 to the right in the horizontal direction, the sliding rod 901 and the wedge block 902 move to the right in the horizontal direction together with the external force, the compression spring 903 is stretched, the limit block 7 loses the obstruction of the wedge block 902, and the tension spring 503 returns to the natural state without being subjected to external force. The driving member 5 as a whole retracts into the hollow cylinder together with the force of the tension spring 503. As the driving member 5 returns to the hollow cylinder, the wedge block 402 loses the abutment of the driving column 502, and the compression spring 403 loses the effect of the external force and gradually returns to the natural state, driving the limit rod 401 and the wedge block 402 to return to the state as shown in the figure. Figure 2 The initial position shown in FIG. 1 is when the tension spring 503 returns to its natural state and the connecting device 2 returns to the initial position shown in FIG. Figure 2 In the initial state shown, the upper shell loses the limit of the limit rod 401, and the upper shell and the lower shell 1 can be separated and disassembled.

[0032] Example 2

[0033] See also Figures 4 to 5, the embodiment of the present application provides a connection device 2, the structure of which is different from that of the embodiment 1 in the composition of the driving member 5, the driving member 5 includes an annular plate 501, a driving column 502, a tension spring 503, a driving rod 504, a driving surface 505, a connecting rod 6 and a limiting plate 7. The driving column 502 is a variable diameter structure, which is divided into two parts according to the diameter size, one part is a cylinder at the bottom, and the other part is a frustum at the top, the upper end surface of the frustum is defined as the upper end surface of the driving column 502, and the lower end surface of the cylinder is defined as the lower end surface of the driving column 502. The annular plate 501 is arranged around the driving column 502, the annular plate 501 is flush with the lower end surface of the driving column 502, the area of ​​the annular plate 501 is exactly the difference between the projection area of ​​the hollow area of ​​the hollow cylinder on the upper end surface or the lower end surface and the area of ​​the lower end surface of the driving column 502, and the annular plate 501 can slide on the inner wall of the hollow cylinder. The driving rod 504 is a cylinder, one end of which is connected to the lower end face of the driving column 502, and the other end is connected to the end face of the driving surface 505. The tension spring 503 surrounds the driving rod 504 and is arranged between the inner wall of the lower end face of the hollow cylinder and the annular plate 501. The driving surface 505 is a flat cylinder, which is convenient for the user to push the driving surface 505 with the finger surface to drive the driving member 5 to slide. The connecting rod 6 is a flat rectangular parallelepiped, and the two end faces with smaller areas are defined as the upper end face and the lower end face. The lower end face is connected to the upper end face of the driving column 502, and the area of ​​the lower end face of the connecting rod 6 completely overlaps with the upper end face of the driving column 502; the upper end face is connected to the limiting plate 7 at the center of the end face of the limiting plate 7. The limiting plate 7 is a rectangular parallelepiped, and its surface connected to the connecting rod 6 is the surface surrounded by the long side and the short side of the rectangular parallelepiped. The length of the stop plate 7 is exactly the sum of the side lengths of the two wedge blocks 402 and the side length of the connecting rod 6 when the stop member 4 is fully inserted. Correspondingly, a positioning groove 12 is provided on the upper end surface of the hollow cylinder, and the size of the positioning groove 12 allows the stop block 7 to pass through. Different from the embodiment 1, the connection device 2 provided in this embodiment does not have a locking device 9.

[0034] See also Figure 6 The embodiment of the present application further provides a shell, which includes a lower shell 1, and 6 connecting devices 2 as described above are arranged on the upper edge of the lower shell 1. The upper edge of the lower shell is provided with a sealing gasket 13 except for the area where the connecting devices 2 are arranged and the groove area. Figure 6 The state shown is the initial state of the lower shell 1. In this state, the upper shell and the lower shell 1 are separated, and the limiter 4 is not pushed by external force. When installing, the upper shell is buckled on the lower shell 1, and each connecting device 2 corresponds to and passes through the corresponding installation holes. Figure 2The state shown in the figure is the initial state of the connecting device 2. Taking a single connecting device 2 as an example, the driving surface 505 is pushed by an external force to drive the driving rod 504 to move vertically upward. As the driving rod 504 moves, the annular plate 501 slides in the same direction in the hollow cylinder, and the tension spring 503 is stretched by the upward force. During the upward movement of the driving rod 504, the driving column 502 forces the wedge blocks 402 of the two stoppers 4 to move leftward and rightward in the horizontal direction, respectively. The horizontal direction to the right is Figure 2 The arrow indicates the X direction. During the movement, the compression spring 403 is squeezed, and the wedge block 402 drives the limit rod 401 to move through the through hole 3 toward the outside of the connecting device 2, thereby forming a limit on the upper shell to prevent the upper shell from being separated from the lower shell 1, and the installation can be achieved. As the driving member 5 continues to move, it will eventually pass through the positioning groove 12. When the limit block 7 just passes through the positioning groove 12 completely, the driving rod 504 can be rotated clockwise to drive the entire driving member 5 to rotate together until the limit block 7 and the positioning groove 12 are interlaced. The limit block 7 is blocked by the positioning groove 12 and cannot naturally retract into the hollow cylinder, thereby locking the limit block 7 and keeping the upper shell and the lower shell 1 fixed without being disassembled by external force.

[0035] When disassembling, the driving rod 504 is rotated counterclockwise, driving the driving member 5 to rotate together, until the limit block 7 and the positioning groove 12 just coincide with each other, the limit block 7 is no longer blocked by the positioning groove 12, and the tension spring 503 recovers to a natural state without being subjected to external force. The limit block 7 and the connecting rod 6 are retracted into the hollow cylinder together by the force of the tension spring 503. As the limit block 7 and the connecting rod 6 return to the hollow cylinder, the wedge block 402 loses the contact with the driving column 502, and the compression spring 403 loses the effect of the external force and gradually returns to a natural state, driving the limit rod 401 and the wedge block 402 to return to the position as shown in the figure. Figure 2 The initial position shown in FIG. 1 is when the tension spring 503 returns to its natural state and the connecting device 2 returns to the initial position shown in FIG. Figure 2 In the initial state shown, the upper shell loses the limit of the limit rod 401, and the upper shell and the lower shell 1 can be separated and disassembled.

[0036] The connecting device provided in the present application can be used to connect the upper and lower shells that need to be installed in combination, such as starter housings, reduction gear housings, gear box housings, and rotary tiller housings. The connecting device provided in the present application is used to connect and fix the shells, which can be completed without the aid of additional tools and is easy to operate. While ensuring good installation and fixation, it improves work efficiency and is more practical.

[0037] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A connection device, characterized in that: The connecting device includes a hollow cylinder and a driving member partially disposed inside the hollow cylinder; The side wall of the hollow cylinder is provided with two opposite through holes, and the upper and lower end surfaces of the hollow cylinder are provided with two opposite through holes, wherein: A limiting member is respectively disposed in two opposite through holes of the side wall; The driving member can move in the hollow cylinder and pass through the two through holes on the upper and lower end surfaces.

2. The device according to claim 1, characterized in that The limiting member comprises: A limiting rod, which is used to be inserted into the through hole of the hollow cylinder; A wedge block, one end of which is connected to the limiting rod; A compression spring is arranged on the limiting rod, one end of the compression spring abuts against the inside of the hollow cylinder, and the other end abuts against the wedge block.

3. The device according to claim 1, characterized in that The driving member comprises a driving column and a driving rod connected in sequence: The driving column is a variable diameter structure, the upper part of which is a frustum and the lower part is a cylinder; The driving rod is a cylinder, one end of which is connected to the lower end surface of the driving column, and the other end is connected to the end surface of the driving surface.

4. The device according to claim 3, characterized in that The driving member is also provided with a tension spring and an annular plate; The annular plate surrounds the driving column and is arranged in the hollow cylinder, and the annular plate is flush with the lower end surface of the driving column; The tension spring is arranged around the driving rod, one end of the tension spring abuts against the inside of the hollow cylinder, and the other end abuts against the annular plate.

5. The device according to claim 3 or 4, characterized in that The driving member also includes a connecting rod and a limit block. The connecting rod is a cuboid; The limit block is a hemispherical structure, and the end surface of the limit block is connected to the upper end surface of the driving column through a connecting rod.

6. The device according to claim 1, characterized in that The upper end surface of the hollow cylinder is also provided with a locking device, which is sequentially connected with a baffle, a sliding rod and a wedge block. A baffle, wherein the lower end surface of the baffle is parallel to the upper end surface of the hollow cylinder, the end surface of one side of the baffle is flush with the side wall of the hollow cylinder, and the opposite side abuts against the fixing ring; A sliding rod, which is a rectangular parallelepiped structure and is connected between the baffle and the wedge block; A wedge block, wherein the non-inclined surface of the wedge block is connected to the sliding rod.

7. The device according to claim 6, characterized in that The locking device also includes: A fixing ring, which is a hollow ring structure, the bottom of which is fixed to the upper end surface of the hollow cylinder, and one side of which is in contact with the baffle; A compression spring is arranged around the sliding rod, one end of the compression spring abuts against the wedge block, and the other end abuts against the baffle.

8. The device according to claim 3 or 4, characterized in that The driving member also includes a connecting rod and a limit block. The connecting rod is a cuboid; The limit block is a rectangular parallelepiped, and the limit block is connected to the upper end surface of the driving column through a connecting rod.

9. The device according to claim 8, characterized in that The through hole formed on the upper end surface of the hollow cylinder is a rectangular through hole.

10. A housing, characterized in that: A connecting device as described in any one of claims 1 to 9 is installed.

11. The housing according to claim 10, characterized in that Also includes: Lower housing; an upper housing; and A sealing gasket is arranged on the upper edge of the lower shell.

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