Limit sleeve and rotary locking device

Abstract

This invention relates to the field of special vehicle mechanical technology, specifically to a limiting sleeve and a rotary locking device. The limiting sleeve includes a main body with an annular groove on its inner wall and limiting grooves on both sides of the inner wall, the limiting grooves communicating with the annular groove. The rotary locking device includes a rotary locking support and a pad. The pad contains the aforementioned limiting sleeve. The main body of the limiting sleeve has a locking bolt, and the rotary locking bolt has a spring through-hole containing a spring with steel balls at both ends. The rotary locking bolt is placed within the main body of the limiting sleeve. One end of the rotary locking bolt protrudes from the pad and has a locking head, while the other end has a rotary locking nut. One end of the steel ball is fixedly connected to the spring, and the other end abuts against the annular groove or limiting groove. The lower end of the rotary locking support has a connecting seat, and the pad is movably connected to the connecting seat via a limiting pin. This invention has a clever structure, is suitable for locking horizontally moving equipment, operates quickly, rotates smoothly, and saves time and effort.

Description

Technical Field

[0001] This invention relates to the field of special vehicle mechanical technology, specifically to a limiting sleeve and a rotary locking device. Background Technology

[0002] Currently, with the rapid development of highways, road transportation, especially container transportation, is becoming increasingly important in the economic field. Container locks are an important component of container transport vehicles. A search reveals that Chinese patent CN201801103U discloses a box-shaped rotary lock for securing containers. It includes a rotary lock support and a lock cylinder, with a lock head fixedly installed on the lock cylinder. The lock cylinder has a screw-type structure, comprising a lock top located at the top for connection with the container and a screw located at the bottom. A locking nut located on the rotary lock support is connected to the screw. The shortcomings of this patent are: firstly, the screw and lock cylinder rotate rigidly, which can easily cause jamming and rust; secondly, the lock cylinder in the patent cannot move, always remaining at the top of the rotary lock support. This means that when the upper part that needs to be connected to the rotary lock is moved horizontally onto the rotary lock support, the lock cylinder will obstruct this horizontal movement, preventing the horizontal movement from landing on the lock cylinder and thus preventing locking, thus limiting the use of the rotary lock. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a locking sleeve and rotary locking device that is ingeniously structured, adaptable to the locking of horizontally moving upper equipment, quick to operate, smooth to rotate, and saves time and effort.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A limiting sleeve includes a limiting sleeve body, characterized in that: the inner wall of the limiting sleeve body is provided with an annular groove, and the two sides of the inner wall of the limiting sleeve body are provided with limiting grooves, the limiting grooves are axially arranged, and the limiting grooves are connected to the annular grooves to facilitate fixing to the limiting sleeve or vertical movement relative to the limiting sleeve.

[0006] A rotary locking device includes a rotary locking support and a pad, characterized in that: a limiting sleeve as described above is provided inside the pad; the outer ring of the limiting sleeve body is fixedly connected to the pad; a rotary locking bolt is provided inside the limiting sleeve body; a spring through hole is provided on the rotary locking bolt; a spring is provided inside the spring through hole; steel balls are respectively provided at both ends of the spring; the rotary locking bolt is placed inside the limiting sleeve body; one end of the rotary locking bolt protrudes from the pad and has a locking head; the other end has a rotary locking nut; one end of the steel ball is fixedly connected to the spring; the other end abuts against an annular groove or limiting groove, so that the rotary locking bolt can be fixed to the pad and can move vertically relative to the pad; the rotary locking support has... The system includes a pad block through hole. The lower end of the rotary lock support has a connecting seat, which includes a front support plate, a rear support plate, and a lower support plate. The upper end of the front support plate is fixedly connected to the front end of the rotary lock support, and the lower end is fixedly connected to the front end of the lower support plate. The upper end of the rear support plate is fixedly connected to the rear end of the rotary lock support, and the lower end is fixedly connected to the rear end of the lower support plate. The upper end of the front support plate has front upper pin holes on both sides, and the lower end of the front support plate has front lower pin holes on both sides. The upper end of the rear support plate has rear upper pin holes on both sides, and the lower end of the rear support plate has rear lower pin holes on both sides. The lower support plate has a bolt hole in the middle. The lower end of the pad block has two... Connecting blocks are provided on both sides of the lower rear end. The upper end of each connecting block is fixedly connected to a pad block. A connecting pin hole is provided on the connecting block. A limiting pin passes through the upper limiting pin hole, the connecting pin hole, and the upper limiting pin hole to fix the pad block to the front and rear support plates, thus exposing the lock head and pad block through the pad block's through hole. Alternatively, the limiting pin passes through the lower limiting pin hole, the connecting pin hole, and the lower limiting pin hole to fix the pad block to the front and rear support plates, ensuring that the height of the upper surface of the lock head is not higher than the height of the upper surface of the rotary lock support. The rotary lock nut is located below the lower support plate and is threadedly connected to the rotary lock bolt to facilitate tightening when needed. Remove the limiting pin located at the lower end of the front support plate, and lift the locking bolt upwards. At this time, because the steel ball is located between the through hole and the annular groove, the locking bolt and the pad are limited by the steel ball and can move upwards simultaneously, exposing the locking support. Insert the limiting pin into the limiting upper pin hole at the upper end of the front support plate. After passing through the connecting pin hole and the limiting upper pin hole, the pad is fixedly connected to the front and rear support plates. Rotate the locking bolt so that the locking head of the locking bolt rotates 90°. At this time, the steel ball rotates from the annular groove into the limiting groove. Then rotate the locking nut. The limiting groove limits the rotation of the locking bolt, so that the locking bolt can only move vertically. The locking head moves down to achieve locking.

[0007] The pad block of the present invention is provided with limiting bosses on the lower left and lower right sides, so that when the screw-locking bolt and the pad block move upward, the upper surface of the limiting boss abuts against the lower surface of the screw-locking support to form a limit, and then the limiting pin is inserted. The positioning is quick and saves time and effort.

[0008] The limiting pin of this invention is provided with a limiting locking mechanism, which includes a cotter pin and a locking plate. One end of the limiting pin has an open groove, and the locking plate is provided in the open groove. Both ends of the open groove have pin holes, and the locking plate has a locking groove. The cotter pin passes through the pin holes and the locking groove to movably connect the locking plate and the limiting pin. The locking plate can be placed in the open groove, or one end of the locking plate can be exposed in the open groove to form a limiting end, so that when inserted, the locking plate can be rotated to make the locking plate parallel to the limiting pin and placed in the open groove. The limiting pin passes through the limiting front pin hole, the connecting pin hole, and the limiting rear pin hole to limit and fix the pad to the front support plate and the rear support plate. Then, the locking plate is manually rotated so that one end of the locking plate is exposed in the open groove, so that the limiting pin is limited and will not slip out.

[0009] The present invention provides a rotating component at the lower end of the rotary locking bolt, the rotating component including a crank handle and a fixed cotter pin. The lower end of the rotary locking bolt has a through hole and a cotter pin hole, the through hole and the cotter pin hole being connected. One end of the crank handle has a crank handle pin hole, one end of which is inserted into the through hole. The fixed cotter pin passes through the cotter pin hole and the crank handle pin hole to limit and fix the crank handle to the rotary locking bolt, so as to facilitate the rotation of the rotary locking bolt by the crank handle, making operation convenient.

[0010] The rotary locking bolt of the present invention includes a smooth section and a threaded section. The upper end of the smooth section is fixedly connected to the lock head, and the lower end is fixedly connected to the threaded section. The smooth section is provided with a spring through hole, and the lower end of the threaded section passes through the bolt hole of the lower support plate and is threadedly connected to the rotary locking nut.

[0011] Due to the above-mentioned structure, the present invention has the advantages of ingenious structure, adaptability to locking of horizontally movable upper equipment, fast operation, smooth rotation, and saving time and effort. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the limiting sleeve at one angle in this invention.

[0013] Figure 2 This is a schematic diagram of the limiting sleeve from another angle in this invention.

[0014] Figure 3 In this invention Figure 1 A sectional view.

[0015] Figure 4 This is a schematic diagram of the rotary locking device in this invention.

[0016] Figure 5 This is the present invention. Figure 4 The left view.

[0017] Figure 6 This is the present invention. Figure 4 Rear view.

[0018] Figure 7 This is the present invention. Figure 4 A sectional view.

[0019] Figure 8 This is a schematic diagram of the structure of the limiting sleeve and pad of the present invention.

[0020] Figure 9 This is a schematic diagram of the structure of the lock head rotating and locking according to the present invention.

[0021] Figure 10 This is a schematic diagram of the structure of the present invention, in which the lock head and the pad block fall together and the lock head unlocks.

[0022] Figure 11 This is a partial cross-sectional view of the upper limit locking mechanism of the limit pin in this invention.

[0023] Figure 12 This is a schematic diagram of the locked state when the present invention is in use.

[0024] Reference numerals: pad 36, connecting seat 37, limiting sleeve body 38, limiting pin 39, lock bolt 40, spring 41, steel ball 42, lock nut 43, lock support 44, pad through hole 45, front support plate 47, rear support plate 48, lower support plate 49, limiting front lower pin hole 50, limiting rear upper pin hole 51, limiting rear lower pin hole 52, bolt hole 53, connecting block 54, connecting pin hole 55, annular groove 56, limiting groove 57, lock head 58, smooth section 59, threaded section 60, limiting boss 63, limiting locking mechanism 64, cotter pin 65, locking plate 66, opening groove 67, locking groove 68, rotating part 69, crank handle 70, fixed cotter pin 71. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] As attached Figure 1 -Appendix Figure 3 A limiting sleeve includes a limiting sleeve body 38, characterized in that: the inner wall of the limiting sleeve body 38 is provided with an annular groove 56, and the two sides of the inner wall of the limiting sleeve body 38 are provided with limiting grooves 57, the limiting grooves 57 are axially arranged, and the limiting grooves 57 are connected to the annular groove 56 to facilitate fixing with the limiting sleeve or vertical movement relative to the limiting sleeve.

[0027] A rotary locking device includes a rotary locking support 44 and a pad 36, characterized in that: a limiting sleeve as described above is provided inside the pad 36; the outer ring of the limiting sleeve body 38 is fixedly connected to the pad 36; a rotary locking bolt 40 is provided inside the limiting sleeve body 38; a spring through hole is provided on the rotary locking bolt 40; a spring 41 is provided inside the spring through hole; steel balls 42 are respectively provided at both ends of the spring 41; the rotary locking bolt 40 is placed inside the limiting sleeve body 38; one end of the rotary locking bolt 40 protrudes from the pad 36 and is provided with a locking head 58; the other end is provided with a rotary locking nut 43; one end of the steel ball 42 is fixedly connected to the spring 41; the other end abuts against the annular groove 56 or the limiting groove 57, so that the rotary locking bolt can be fixed to the pad and can also move vertically relative to the pad. The rotary lock support 44 is provided with a pad through hole 45. A connecting seat 37 is provided at the lower end of the rotary lock support 44. The connecting seat 37 includes a front support plate 47, a rear support plate 48, and a lower support plate 49. The upper end of the front support plate 47 is fixedly connected to the front end of the rotary lock support 44, and the lower end is fixedly connected to the front end of the lower support plate 49. The upper end of the rear support plate 48 is fixedly connected to the rear end of the rotary lock support 44, and the lower end is fixedly connected to the rear end of the lower support plate 49. The upper ends of the front support plate 47 are provided with upper front pin holes on both sides, and the lower ends of the front support plate 47 are provided with lower front pin holes 50 on both sides. The upper ends of the rear support plate 48 are provided with upper rear pin holes 51 on both sides, and the lower ends of the rear support plate 48 are provided with lower rear pin holes 52 on both sides. The lower support plate 49 has a... There are bolt holes 53. Connecting blocks 54 are respectively provided on both sides of the lower front end and the lower rear end of the pad 36. The upper end of the connecting block 54 is fixedly connected to the pad 36. The connecting block 54 has a connecting pin hole 55. A limiting pin 39 passes through the limiting upper pin hole, the connecting pin hole 55, and the limiting upper pin hole 51 to limit and fix the pad 36 to the front support plate 47 and the rear support plate 48, so that the lock head 58 and the pad 36 are exposed through the pad through hole 45. Alternatively, the limiting pin 39 passes through the limiting lower pin hole 50, the connecting pin hole 55, and the limiting lower pin hole 52 to limit and fix the pad 36 to the front support plate 47 and the rear support plate 48, so that the height of the upper surface of the lock head 58 is not higher than the height of the upper surface of the rotary lock support 44. The rotary lock nut 43 is located at... Below the lower support plate 49, the lock nut 43 is threadedly connected to the lock bolt 40. This allows for easy locking when the limiting pin at the lower end of the front support plate is removed. The lock bolt is then lifted upwards. Because the steel ball is located between the through hole and the annular groove, the lock bolt and the pad are limited by the steel ball and can move upwards simultaneously, exposing the lock support. The limiting pin is then inserted into the limiting upper pin hole at the upper end of the front support plate. After passing through the connecting pin hole and the limiting upper pin hole, the pad is fixedly connected to the front and rear support plates. The lock bolt is rotated so that the lock head of the lock bolt rotates 90°. At this time, the steel ball rotates from the annular groove into the limiting groove. Then, the lock nut is rotated, and the limiting groove limits the rotation of the lock bolt, so that the lock bolt can only move vertically. The lock head moves downwards to achieve locking.

[0028] The pad 36 of the present invention is provided with limiting bosses 63 fixed on the lower left and lower right sides, so that when the screw-locking bolt and the pad move upward, the upper surface of the limiting boss abuts against the lower surface of the screw-locking support to form a limit, and then the limiting pin is inserted. The positioning is quick and saves time and effort.

[0029] The limiting pin 39 of the present invention is provided with a limiting locking mechanism 64, which includes a cotter pin 65 and a locking piece 66. One end of the limiting pin 39 has an opening groove 67, within which the locking piece 66 is disposed. Both ends of the opening groove 67 have pin holes, and the locking piece 66 has a locking groove 68. The cotter pin 65 passes through the pin holes and the locking groove 68 to movably connect the locking piece 66 to the limiting pin 39, thereby locking the pin. The locking piece 66 can be placed in the opening slot 67, or one end of the locking piece 66 can protrude from the opening slot 67 to form a limiting end. This facilitates the insertion process by rotating the locking piece so that it is parallel to the limiting pin. The locking piece is placed in the opening slot, and the limiting pin passes through the limiting front pin hole, connecting pin hole, and limiting rear pin hole to limit and fix the pad block to the front support plate and the rear support plate. Then, the locking piece is manually rotated so that one end of the locking piece protrudes from the opening slot, thus limiting the limiting pin and preventing it from slipping out.

[0030] The lower end of the rotary locking bolt 40 of the present invention is provided with a rotating component 69, the rotating component 69 including a crank handle 70 and a fixed cotter pin 71. The lower end of the rotary locking bolt 40 is provided with a through hole and a cotter pin hole, the through hole and the cotter pin hole being connected. One end of the crank handle 70 is provided with a crank handle pin hole, one end of the crank handle 70 being inserted into the through hole. The fixed cotter pin 71 passes through the cotter pin hole and the crank handle pin hole to limit and fix the crank handle 70 to the rotary locking bolt 40, so as to facilitate the rotation of the rotary locking bolt by the crank handle, making operation convenient.

[0031] The rotary locking bolt 40 of the present invention includes a smooth section 59 and a threaded section 60. The upper end of the smooth section 59 is fixedly connected to the lock head 58, and the lower end is fixedly connected to the threaded section 60. The smooth section 59 is provided with a spring through hole. The lower end of the threaded section 60 passes through the bolt hole 53 of the lower support plate 49 and is threadedly connected to the rotary locking nut 43.

[0032] As attached Figure 4 -Appendix Figure 12 Before use, connecting plates can be installed on both sides of the rotary lock support. The rotary lock support is fixed to the lower part through the connecting plates. Then, the upper part is provided with lock head and pad insertion holes and lock head receiving space at corresponding positions. When the invention is not in use, as shown in the attached... Figure 7As shown, the lock head and washer do not protrude from the turnlock support, allowing the upper part to slide onto the turnlock support. When locking is required, the limit pin is removed. At this time, one end of the steel ball is fixedly connected to the spring, and the other end abuts against the annular groove. The bolt and washer are limited and fixed by the spring and steel ball. Lifting the turnlock bolt upwards using the crank handle allows the turnlock bolt and washer to move upwards simultaneously, exposing the turnlock support. The washer and lock head pass through the insertion hole, and the lock head enters the lock head receiving space, as shown in the attached diagram. Figure 9 When the limiting boss abuts against the lower end of the turnlock support, the lock head and pad block rise into position. Insert the limiting pin into the limiting front upper pin hole at the upper end of the front support plate. After passing through the connecting pin hole and the limiting rear upper pin hole, the pad block is fixedly connected to the front and rear support plates. Turn the crank handle, and then turn the turnlock bolt, causing the lock head of the turnlock bolt to rotate 90°. At this time, the steel ball rotates from the annular groove into the limiting groove. The limiting groove limits the rotation of the turnlock bolt, so that the turnlock bolt can only move vertically. Turn the turnlock nut for fine adjustment to make the turnlock... With the bolt pointing downwards, the lower end of the lock head is fixed against the plate at the lower end of the lock head receiving space. When it is necessary to unlock, loosen the locking bolt and turn the crank handle, causing the locking bolt to rotate 90°, and thus the lock head to rotate 90°. At this time, the steel ball enters the annular groove from the limiting groove. The locking bolt and the pad are integrated due to the limiting effect of the steel ball and spring. Then, remove the limiting pin, and the lock head and the pad fall down. The stop block abuts against the lower support plate, limiting the pad and the locking bolt. At this time, both the pad and the lock head have descended to the lower end of the lock support, as shown in the attached diagram. Figure 7 As shown, after passing the limiting pin through the front lower pin hole, the connecting pin hole, and the rear lower pin hole in sequence, the locking piece can be removed to fix it. This invention is easy to operate and easy to lock and unlock. It is not only applicable to the structure of the upper part that moves horizontally, but also applicable to the upper and lower structures of traditional containers. It has a wide range of applications. Moreover, the limiting sleeve is set in the pad block in this invention, which makes the rotation smooth and saves time and effort.

[0033] Due to the above-mentioned structure, the present invention has the advantages of ingenious structure, adaptability to locking of horizontally movable upper equipment, fast operation, smooth rotation, and saving time and effort.

Claims

1. A twistlock arrangement comprising a twistlock mount and a pad, characterized by: The spacer is internally provided with a limiting sleeve, the limiting sleeve comprises a limiting sleeve body, an annular groove is arranged on the inner wall of the limiting sleeve body, limiting grooves are arranged on both sides of the inner wall of the limiting sleeve body, the limiting grooves are arranged in the axial direction and are communicated with the annular groove, the outer circle of the limiting sleeve body is fixedly connected with the spacer, a rotating bolt is arranged in the limiting sleeve body, a spring hole is arranged on the rotating bolt, a spring is arranged in the spring hole, steel balls are arranged at both ends of the spring, the rotating bolt is arranged in the limiting sleeve body, a lock head is arranged at one end of the rotating bolt which is arranged to pass through the spacer, a rotating nut is arranged at the other end of the rotating bolt, one end of the steel ball is fixedly connected with the spring, the other end of the steel ball is abutted with the annular groove or the limiting groove, a spacer through hole is arranged on the rotating support, a connecting seat is arranged at the lower end of the rotating support, the connecting seat comprises a front support plate, a rear support plate and a lower support plate, the upper end of the front support plate is fixedly connected with the front end of the rotating support, the lower end of the front support plate is fixedly connected with the front end of the lower support plate, the upper end of the rear support plate is fixedly connected with the rear end of the rotating support, the lower end of the rear support plate is fixedly connected with the rear end of the lower support plate, limiting front upper pin holes are arranged on both sides of the upper end of the front support plate, limiting front lower pin holes are arranged on both sides of the lower end of the front support plate, limiting rear upper pin holes are arranged on both sides of the upper end of the rear support plate, limiting rear lower pin holes are arranged on both sides of the lower end of the rear support plate, a bolt hole is arranged in the middle of the lower support plate, connecting blocks are arranged on both sides of the lower end of the front face and the lower end of the rear face of the spacer, the upper end of the connecting block is fixedly connected with the spacer, a connecting pin hole is arranged on the connecting block, a limiting pin passes through the limiting front upper pin hole, the connecting pin hole and the limiting rear upper pin hole to limit and fixedly connect the spacer with the front support plate and the rear support plate, so that the lock head and the spacer are exposed from the spacer through hole, or the limiting pin passes through the limiting front lower pin hole, the connecting pin hole and the limiting rear lower pin hole to limit and fixedly connect the spacer with the front support plate and the rear support plate, so that the height of the upper end surface of the lock head is not higher than the height of the upper end surface of the rotating support, the rotating nut is arranged below the lower support plate, the rotating nut is threadedly connected with the rotating bolt, a limiting locking mechanism is arranged on the limiting pin, the limiting locking mechanism comprises a split pin and a locking piece, an open groove is arranged at one end of the limiting pin, the locking piece is arranged in the open groove, pin holes are arranged at both ends of the open groove, a locking groove is arranged on the locking piece, the split pin passes through the pin hole and the locking groove to movably connect the locking piece with the limiting pin, the locking piece can be arranged in the open groove, or one end of the locking piece is exposed from the open groove to form a limiting end.

2. A spin lock device as claimed in claim 1, wherein: A rotating part is arranged at the lower end of the rotating bolt, the rotating part comprises a rocking handle and a fixed split pin, a hole and a split pin hole are arranged at the lower end of the rotating bolt, the hole and the split pin hole are communicated, a rocking handle pin hole is arranged at one end of the rocking handle, the rocking handle is inserted into the hole, the fixed split pin passes through the split pin hole and the rocking handle pin hole to limit and fixedly connect the rocking handle with the rotating bolt.

3. A spin lock device according to claim 1 or 2, characterised in that: The rotating bolt comprises a smooth section and a threaded section, the upper end of the smooth section is fixedly connected with the lock head, the lower end of the smooth section is fixedly connected with the threaded section, a spring hole is arranged on the smooth section, the lower end of the threaded section passes through the bolt hole of the lower support plate and is threadedly connected with the rotating nut.

Images