Locking device for connecting socket hanging plate and ball hanging ring

Abstract

A locking device for connecting a socket hanging plate and a ball hanging ring comprises the socket hanging plate and the ball hanging ring which are connected end to end, the socket hanging plate is vertically arranged, and a T-shaped containing groove with an opening in the front end is formed in the lower portion of the socket hanging plate; the cross section of the upper portion of the ball head hanging ring is of a T-shaped structure corresponding to the T-shaped containing groove. And front and back interlocking of the limiting part is achieved through the arrangement of the limiting column, the safety of the equipment is improved, and meanwhile the friction loss generated by swinging of the limiting part is reduced.

Description

Technical Field

[0001] The utility model relates to a connection locking device, in particular to a locking device used for connecting a bowl head hanging plate and a ball head hanging ring. Background Art

[0002] At present, the hoisting method connected by the bowl head hanging plate and the ball head hanging ring is often used in hoisting operations, especially for outdoor long-distance transmission towers. In order to fit the traditional ball head hanging ball end into the bowl head ball socket, a ball head hanging ring inlet needs to be opened on the ball socket, and then a locking pin is installed in the ball socket to fix the ball head hanging plate. Although there are various structural designs of the locking pin, the locking pin is often damaged during long-term outdoor operations. Once the locking pin is damaged, the ball head hanging ring will fall off from the bowl head hanging plate.

[0003] The applicant is aware of an anti-dropping bowl head hanging plate (CN 210577651 U), which includes a bowl head seat and a hanging plate. A U-shaped groove is provided at one end of the bowl head seat facing away from the hanging plate. A W-shaped locking pin is arranged in the U-shaped groove. The two sides of the W-shaped locking pin respectively abut against the two side walls of the U-shaped groove. Raised strips are welded on the two side walls of the U-shaped groove. The ball head part of the ball head hanging ring is clamped between the raised strips and the U-shaped groove. The operator slides the ball head part of the ball head hanging ring from the opening of the U-shaped groove into the U-shaped groove to cooperate with the W-shaped locking pin. The W-shaped locking pin clamps the ball head. The distance between the two raised strips is smaller than the diameter of the ball head, so that the raised strip plays a clamping role on the ball head hanging ring, thereby reducing the possibility of the ball head hanging ring falling off from the bowl head hanging plate.

[0004] However, in the process of implementing the technical solution in the above application embodiment, the applicant found that the above technology has at least the following technical problems:

[0005] 1. The processing of the cup head seat is cumbersome and difficult to mass produce, and the fasteners are complicated to operate during the assembly and disassembly processes.

[0006] 2. The ball head hanging ring will frequently impact the fasteners during operation, which may easily cause the fasteners to fail and result in a greater risk of separation between the cup head seat and the hanging plate. Utility Model Content

[0007] The utility model aims to provide a locking device for connecting a bowl head hanging plate and a ball head hanging ring, which can limit the relative movement of the bowl head hanging plate and the ball head hanging ring while realizing the connection between the bowl head hanging plate and the ball head hanging ring, thereby reducing the probability of the bowl head hanging plate and the ball head hanging ring being separated.

[0008] The utility model adopts the following technical solutions:

[0009] A locking device for connecting a bowl head hanger plate and a ball head hanger ring, comprising a bowl head hanger plate and a ball head hanger ring connected end to end. The bowl head hanger plate is vertically placed, and a T-shaped accommodating groove with an open front end is provided at the lower part of the bowl head hanger plate; the upper cross-section of the ball head hanger ring is in a T-shaped structure corresponding to the T-shaped accommodating groove.

[0010] Further, in the T-shaped accommodating groove, a limiting part is provided. The front end of the limiting part is detachably connected to the bowl head hanger plate, the rear end of the limiting part is suspended in the opening of the T-shaped accommodating groove, and a space for restricting the front and rear movement of the ball head hanger ring is formed between the rear side of the limiting part and the T-shaped accommodating groove.

[0011] Further, the T-shaped accommodating groove includes a transverse groove and a longitudinal groove; the T-shaped accommodating groove corresponds to the T-shaped structure of the ball head hanger ring; the T-shaped structure includes an elliptical ball head and a pull rod arranged along the central axis of the elliptical ball head.

[0012] Further, the limiting part includes a cross brace and a vertical brace. The cross brace passes through the upper part behind the T-shaped accommodating groove along the upper part of the elliptical ball head.

[0013] In the present utility model, by setting the limiting part, the effect of restricting the front and rear movement of the elliptical ball head is achieved, and the probability of the bowl head hanger plate and the ball head hanger ring being separated is reduced.

[0014] Further, a round hole is also opened at the rear end of the T-shaped accommodating groove. The rear part of the cross brace passes through the round hole at the rear end of the T-shaped accommodating groove, and a thread is also provided at the rear end of the cross brace. The rear end of the cross brace is connected to a first nut through the thread; a vertical brace is also provided at the front end of the cross brace. One end of the vertical brace is fixed to the front end of the cross brace, and the other end extends downward to the front end of the longitudinal groove, so that the limiting part forms an integral L-shaped structure, thereby hindering the forward movement of the elliptical ball head.

[0015] In the present utility model, by setting the L-shaped structure, the structure of the limiting part is simple, which is beneficial to mass production and also improves the assembly efficiency.

[0016] Further, a second nut is provided at the rear end of the first nut.

[0017] Further, a pin hole is radially opened along the cross brace behind the second nut, and a limit pin is inserted into the pin hole.

[0018] In the present utility model, the stability of the structure is further increased by the setting of the second nut and the limit pin.

[0019] Further, the limit pin is in a V-shaped structure, and the limit pin is made of an elastic material.

[0020] Further, the V-shaped structure of the limit pin includes a short brace and a long brace, and an arc-shaped protrusion is provided on the outside of the upper part of the long brace.

[0021] Further, a through hole is formed in the middle of the vertical strut in the left - right direction, a limit post is inserted through the through hole, and the left and right ends of the limit post respectively protrude from the left and right end faces of the vertical strut; limit post receiving grooves are formed in the front end face of the bowl - head hanger plate corresponding to the left and right ends of the limit post.

[0022] In the present utility model, the front - to - back inter - locking of the limiting part is realized through the arrangement of the limit post, which improves the safety of the device and also reduces the frictional loss caused by the swing of the limiting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the bowl - head hanger plate in the present utility model;

[0024] Figure 2 is a schematic structural view of the ball - head suspension ring in the present utility model;

[0025] Figure 3 is a schematic structural view of the T - shaped receiving groove in the present utility model;

[0026] Figure 4 is a schematic structural view of the T - shaped structure in the present utility model;

[0027] Figure 5 is a schematic structural view of the limit pin in the present utility model.

[0028] In the figure, 1. bowl - head hanger plate; 2. ball - head suspension ring; 3. T - shaped receiving groove; 4. T - shaped structure; 5. transverse groove; 6. longitudinal groove; 7. elliptical ball head; 8. pull rod; 9. limiting part; 10. cross strut; 11. vertical strut; 12. round hole; 13. first nut; 14. L - shaped structure; 15. second nut; 16. pin hole; 17. limit pin; 18. short strut; 19. long strut; 20. arc - shaped protrusion; 21. through hole; 22. limit post; 23. limit post receiving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present utility model will be described in detail below with reference to the drawings and embodiments:

[0030] As Figures 1 to 5 shown, the locking device for connecting the bowl - head hanger plate and the ball - head suspension ring of the present utility model includes a bowl - head hanger plate 1 and a ball - head suspension ring 2 connected end to end. The bowl - head hanger plate 1 is placed vertically, and a T - shaped receiving groove 3 with a front - end opening is arranged at the lower part of the bowl - head hanger plate 1; the upper cross - section of the ball - head suspension ring 2 is in a T - shaped structure 4 corresponding to the T - shaped receiving groove 3;

[0031] During operation, the upper part of the ball head shackle 2 is placed into the corresponding T-shaped receiving groove 3 along the front end. The upper part of the ball head shackle 2 forms upper and lower limits within the T-shaped receiving groove 3, that is, the ball head shackle 2 cannot move vertically. Thus, the T-shaped receiving groove 3 achieves the upper and lower limits of the upper part of the ball head shackle 2. The lower end of the bowl head hanger plate 1 and the upper end of the ball head shackle 2 jointly bear the reverse vertical pulling force, enabling the stable connection between the bowl head hanger plate 1 and the ball head shackle 2 without disengagement.

[0032] Due to the front end face of the T-shaped receiving groove 3 at the lower part of the bowl head hanger plate 1 being open, during operation, especially when the outdoor wind force is relatively large, the direction of the force on the bowl head hanger plate 1 and the ball head shackle 2 changes, causing the ball head shackle 2 to receive a forward component force. A relative movement tendency occurs between the lower end of the bowl head hanger plate 1 and the upper end of the ball head shackle 2, increasing the risk of disengagement between the lower end of the bowl head hanger plate 1 and the upper end of the ball head shackle 2.

[0033] In order to prevent the relative movement between the lower end of the bowl head hanger plate 1 and the upper end of the ball head shackle 2 in the front-rear direction and avoid the disconnection between the bowl head hanger plate 1 and the ball head shackle 2. In the present utility model, within the T-shaped receiving groove 3, a limiting portion 9 is further provided. The front end of the limiting portion 9 is detachably connected to the bowl head hanger plate 1, and the rear end of the limiting portion 9 is suspended within the opening of the T-shaped receiving groove 3, forming a space with the T-shaped receiving groove 3 at the rear side of the limiting portion 9 to restrict the front-rear movement of the ball head shackle 2, preventing relative movement between the bowl head hanger plate 1 and the ball head shackle 2.

[0034] In this embodiment, the T-shaped receiving groove 3 includes a transverse groove 5 and a longitudinal groove 6; the T-shaped receiving groove 3 corresponds to the T-shaped structure 4 of the ball head shackle 2; the T-shaped structure 4 includes an elliptical ball head 7 and a pull rod 8 arranged along the central axis of the elliptical ball head 7;

[0035] During operation, the elliptical ball head 7 and the pull rod 8 are placed into the interior of the T-shaped receiving groove 3 along the front end face of the T-shaped receiving groove 3, and the elliptical ball head 7 and the pull rod 8 are placed within the corresponding transverse groove 5 and longitudinal groove 6. In order to achieve the detachable connection between the rear end of the limiting portion 9 and the bowl head hanger plate 1, a round hole 12 is further opened at the rear end of the T-shaped receiving groove 3.

[0036] In this embodiment, the limiting portion 9 includes a cross brace 10 and a vertical brace 11. The cross brace 10 passes through the upper part at the rear of the T-shaped receiving groove 3 above the elliptical ball head 7; in order to fix the cross brace 10, in this embodiment, the rear part of the cross brace 10 passes through the round hole 12 at the rear end of the T-shaped receiving groove 3, and a thread is further provided at the rear end of the cross brace 10. The rear end of the cross brace 10 is pre-tightened by the thread and the first nut 13, fixing the rear part of the cross brace 10 on the bowl head hanger plate 1; a vertical brace 11 is further provided at the front end of the cross brace 10. One end of the vertical brace 11 is fixed to the front end of the cross brace 10, and the other end extends downward to the front end of the longitudinal groove 6, forming an integral L-shaped structure 14 for the limiting portion 9, thereby preventing the elliptical ball head 7 from moving forward.

[0037] In order to prevent the thread from loosening, in this embodiment, a second nut 15 is further provided at the rear end of the first nut 13. The second nut 15 pre-tightens the first nut 13, thereby reducing the probability of the first nut 13 loosening.

[0038] In this embodiment, in order to prevent the second nut 15 and the first nut 13 from loosening at the same time when lifting heavy objects, the potential safety hazard is completely eliminated. In this embodiment, a pin hole 16 is also radially opened behind the second nut 15 along the cross brace 10, and a limit pin 17 is inserted into the pin hole 16. In order to prevent the limit pin 17 from sliding down due to gravity, the limit pin 17 is in a V-shaped structure, and the limit pin 17 is made of elastic material; during the working process, the open end of the V-shaped structure of the limit pin 17 is squeezed, and the open end of the V-shaped structure is released after the limit pin 17 successfully passes through the pin hole 16, so that it returns to the open state of the V-shaped structure; the tension of the elastic material of the limit pin 17 causes the limit pin 17 to form a friction force with the inner wall of the pin hole 16 to offset the effect of gravity.

[0039] In this embodiment, the V-shaped structure of the limit pin 17 includes a short support 18 and a long support 19. In order to further ensure that the limit pin 17 cannot move downward to slide out of the pin hole 16 under the action of gravity, an arc-shaped protrusion 20 facing outward is provided on the upper part of the long support 19 to further increase the friction between the outer wall of the limit pin 17 and the inner wall of the pin hole 16.

[0040] The utility model can also realize the rapid separation of the bowl head hanging plate 1 and the ball head hanging ring 2 during the disassembly process, and the method is as follows: first, pull out the limit pin 17, rotate the second nut 15 and the first nut 13 to make the second nut 15 and the first nut 13 move backward a certain distance, and then move the limit part 9 forward to make the cross brace 10 rotate until the elliptical ball head 7 can be completely separated from the T-shaped receiving groove 3.

[0041] During operation, the vertical support 11 of the limiting portion 9 is prevented from swinging left and right in the T-shaped receiving groove 3 so as to not hinder the elliptical ball head 7 from moving forward.

[0042] In this embodiment, a through hole 21 is opened in the middle of the vertical support 11 along the left-right direction, and a limiting column 22 is penetrated along the through hole 21, and the left and right ends of the limiting column 22 protrude from the left and right end surfaces of the vertical support 11 respectively; the front end surface of the bowl head hanging plate 1 is provided with a limiting column accommodating groove 23 corresponding to the left and right ends of the limiting column 22. During operation, the left and right ends of the limiting column 22 are restricted in the corresponding limiting column accommodating groove 23, so that the vertical support 11 of the limiting part 9 cannot swing left and right in the T-shaped accommodating groove 3; at the same time, the impact on the limiting part 9 during operation is reduced.

Claims

1. A locking device for connecting a bowl head hanging plate and a ball head hanging ring, characterized in that: It includes a bowl head hanging plate and a ball head hanging ring connected end to end. The bowl head hanging plate is placed vertically, and a T-shaped accommodating groove with a front end opening is arranged at the lower part of the bowl head hanging plate; the upper cross section of the ball head hanging ring presents a T-shaped structure corresponding to the T-shaped accommodating groove.

2. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 1, characterized in that: A limiting part is arranged in the T-shaped receiving groove, the front end of which is detachably connected to the bowl head hanging plate, and the rear end of which is suspended in the opening of the T-shaped receiving groove. The rear side of the limiting part and the T-shaped receiving groove form a space for limiting the forward and backward movement of the ball head hanging ring.

3. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 2, characterized in that: The T-shaped receiving groove comprises a transverse groove and a longitudinal groove; the T-shaped receiving groove corresponds to the T-shaped structure of the ball head hanging ring; the T-shaped structure comprises an elliptical ball head and a pull rod arranged along the central axis of the elliptical ball head.

4. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 3, characterized in that: The limiting part comprises a horizontal support and a vertical support, and the horizontal support is provided along the upper part of the rear of the T-shaped accommodating groove above the elliptical ball head.

5. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 4, characterized in that: The rear end of the T-shaped accommodating groove is also provided with a round hole; the rear part of the cross brace passes through the round hole at the rear end of the T-shaped accommodating groove, and the rear end of the cross brace is also provided with a thread, and the rear end of the cross brace is connected to the first nut through the thread; the front end of the cross brace is also provided with a vertical brace, one end of the vertical brace is fixed to the front end of the cross brace, and the other end extends downward to the front end of the longitudinal groove, so that the limiting part forms an integrated L-shaped structure, thereby hindering the elliptical ball head from moving forward.

6. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 5, characterized in that: A second nut is arranged at the rear end of the first nut.

7. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 6, characterized in that: A pin hole is arranged at the rear of the second nut along the radial direction of the cross brace, and a limiting pin is inserted into the pin hole.

8. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 7, characterized in that: The limit pin is in a V-shaped structure and is made of elastic material.

9. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 8, characterized in that: The V-shaped structure of the limit pin comprises a short support and a long support, and an arc-shaped protrusion facing outward is arranged on the upper part of the long support.

10. The locking device for connecting the bowl head hanging plate and the ball head hanging ring according to claim 4, characterized in that: A through hole is opened in the middle of the vertical support along the left and right directions, and a limit column is passed through the through hole. The left and right ends of the limit column protrude from the left and right end faces of the vertical support respectively; a limit column accommodating groove is opened at the left and right ends of the limit column corresponding to the front end of the bowl head hanging plate.

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