Safety lock catch for power maintenance

Abstract

The utility model discloses a power maintenance safety lock catch, which relates to the technical field of safety lock catches, and comprises a D-shaped lock catch consisting of a C-shaped fixing ring, a fixed connecting block, a clamping hook and a locking rod, and the reinforcing assembly is used for synchronously connecting and reinforcing the locking rod and the fixed connecting block as well as the locking rod and the clamping hook. According to the utility model, the reinforcing assembly is arranged, and the reinforcing threaded cylinder is in threaded connection with the fixed connecting block and the clamping hook, so that when the D-shaped lock catch bears tensile force, the C-shaped fixing ring and the locking rod can share the tensile force except the original contact part; the threaded connection positions of the reinforcing threaded cylinder, the locking rod, the fixed connection block and the clamping hook can share part of pulling force, then the longitudinal bearing capacity of the opening position of the C-shaped fixing ring is further improved, and meanwhile the reinforcing threaded cylinder wraps the contact positions of the locking rod, the fixed connection block and the clamping hook, so that the transverse bearing capacity of the D-shaped lock catch can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety locks, in particular to a safety lock for electric power maintenance. Background Art

[0002] During long-term operation, various faults will occur in power equipment. At this time, electricians are needed to repair the power equipment. Among them, the maintenance of power equipment installed at high altitudes is considered high-altitude work. When working at high altitudes, it is necessary to use safety locks to connect the safety belts to ensure the safety of the maintenance workers.

[0003] There are many types of safety locks commonly used in aerial work, among which there is a D-type lock. The shape of the lock resembles a capital letter D, hence the name. The D-type lock is mainly composed of a C-shaped fixing part and a lock rod, and is closed and opened by the combination and separation of the lock rod and the C-shaped fixing part. When the D-type lock is in use, the connection between the lock rod and the C-shaped fixing part is relatively weak, resulting in the lateral bearing force of the safety lock being significantly smaller than the longitudinal bearing force, and the longitudinal bearing force of the opening of the C-shaped fixing part (i.e., the rotational connection with the lock rod) is also smaller than the longitudinal bearing force of the sealing part of the C-shaped fixing part. Based on this, in order to further improve the lateral bearing force of the safety lock and the longitudinal bearing force of the opening of the C-shaped fixing part, a power maintenance safety lock is provided. Summary of the invention

[0004] The purpose of the utility model is to provide a power maintenance safety lock to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric power maintenance safety lock, comprising a D-type lock composed of a C-type fixing ring, a fixed connection block, a clamping hook, and a locking rod, wherein the fixed connection block and the clamping hook are symmetrically fixed to the bottom end and the top end of the opening end of the C-type fixing ring, the locking rod is rotatably connected to the outside of the fixed connection block and clamped to the outside of the clamping hook, and is used to achieve the blocking of the C-type fixing ring opening, the outer wall of the locking rod at the contact position with the fixed connection block and the clamping hook is formed with an external thread, and a reinforcement component is arranged on the outer side of the locking rod, and the reinforcement component is used to synchronously connect and reinforce the locking rod and the fixed connection block and the locking rod and the clamping hook;

[0006] The reinforcement assembly includes a rotating ring seat, a reinforcement threaded cylinder, and a T-shaped linkage rod;

[0007] The rotating ring seat and the reinforcing threaded barrel are rotatably sleeved on the outer side of the locking rod. Two reinforcing threaded barrels are provided. The two reinforcing threaded barrels are symmetrically distributed up and down with the rotating ring seat as the center, and the reinforcing threaded barrel is threadedly connected with the outer thread of the outer wall of the locking rod;

[0008] The T-shaped linkage rod is symmetrically fixed to the upper and lower ends of the rotating ring seat and passes through two reinforced threaded cylinders;

[0009] When the rotating ring seat rotates, the two reinforcement threaded cylinders are driven to rotate synchronously through the T-shaped linkage rod, so that the two reinforcement threaded cylinders are respectively threadedly connected to the external threads on the outside of the fixed connection block and the clamping hook, thereby realizing the synchronous connection and reinforcement of the locking rod and the fixed connection block and the clamping hook.

[0010] As a further solution of the utility model: an annular groove is integrally formed in the middle of the outer side of the locking rod, a limiting ring is fixedly connected to the inner side of the rotating ring seat, and the limiting ring is slidably sleeved with the annular groove.

[0011] As a further solution of the utility model: a plurality of T-shaped linkage rods are arranged in a ring around the rotating ring seat, and a "T"-shaped rail groove slidably connected to the plurality of T-shaped linkage rods is opened on the inner side of the reinforced threaded cylinder.

[0012] As a further solution of the utility model: the spiral direction of the external thread on the outside of the snap-in hook and the top of the locking rod is opposite to the spiral direction of the external thread on the outside of the fixed connecting block and the bottom of the locking rod, and the spiral direction of the internal threads of the two reinforced threaded barrels matches the spiral direction of the two external threads.

[0013] As a further solution of the utility model: the fixed connection block and the clamping hook are formed with a limiting protrusion at the end of the external thread on the outside, which is used to limit the movement of the reinforced threaded barrel.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By providing a reinforcement component and reinforcing the threaded connection between the threaded barrel and the fixed connecting block and the snap hook, when the D-type lock buckle is subjected to tension, in addition to the original contact portion between the C-type fixing ring and the locking rod being able to share the tension, the reinforced threaded connection between the threaded barrel and the locking rod, the fixed connecting block and the snap hook can also share a part of the tension, thereby further improving the longitudinal bearing capacity of the opening of the C-type fixing ring. At the same time, the wrapping of the locking rod with the fixed connecting block and the snap hook by the reinforced threaded barrel can improve the lateral bearing capacity of the D-type lock buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the locking lever of the utility model in an open state;

[0018] Figure 3 It is a structural schematic diagram of the reinforcing threaded barrel, the fixed connection block and the clamping hook in the threaded connection state of the utility model;

[0019] Figure 4 It is a structural cross-sectional view of the reinforcement component of the utility model.

[0020] In the figure: 1. D-type lock buckle; 101. C-type fixing ring; 102. fixed connecting block; 103. snap hook; 104. locking rod; 105. annular groove; 2. reinforcement component; 201. rotating ring seat; 202. limiting ring; 203. reinforcement threaded cylinder; 204. T-type linkage rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 In the embodiment of the utility model, the power maintenance safety lock includes a D-type lock 1 composed of a C-type fixing ring 101, a fixed connection block 102, a snap hook 103, and a locking rod 104. The fixed connection block 102 and the snap hook 103 are symmetrically fixed to the bottom and top of the open end of the C-type fixing ring 101. The locking rod 104 is rotatably connected to the outside of the fixed connection block 102 and snapped to the outside of the snap hook 103, so as to achieve the blocking of the opening of the C-type fixing ring 101. The outer wall of the contact position between the locking rod 104 and the fixed connection block 102 and the snap hook 103 is formed with an external thread. The outer side of the locking rod 104 is provided with a reinforcement component 2, and the reinforcement component 2 is used to synchronously connect and reinforce the locking rod 104 and the fixed connection block 102 and the locking rod 104 and the snap hook 103.

[0023] The reinforcement assembly 2 includes a rotating ring seat 201, a reinforcement threaded cylinder 203, and a T-shaped linkage rod 204;

[0024] The rotating ring seat 201 and the reinforcing threaded barrel 203 are rotatably sleeved on the outer side of the locking rod 104. Two reinforcing threaded barrels 203 are provided. The two reinforcing threaded barrels 203 are symmetrically distributed up and down with the rotating ring seat 201 as the center, and the reinforcing threaded barrel 203 is threadedly connected with the outer wall external thread of the locking rod 104;

[0025] The T-shaped linkage rod 204 is symmetrically fixed to the upper and lower ends of the rotating ring seat 201 and passes through the two reinforcing threaded cylinders 203;

[0026] When the rotating ring seat 201 rotates, the two reinforcing threaded cylinders 203 are driven to rotate synchronously through the T-shaped linkage rod 204, so that the two reinforcing threaded cylinders 203 are respectively threadedly connected with the external threads on the outside of the fixed connection block 102 and the clamping hook 103, thereby realizing the synchronous connection and reinforcement of the locking rod 104, the fixed connection block 102 and the clamping hook 103;

[0027] The external thread on the outside of the clamping hook 103 and the top of the locking rod 104 is in the opposite direction to the external thread on the outside of the fixed connection block 102 and the bottom of the locking rod 104. The internal thread of the two reinforcing threaded barrels 203 matches the two external thread directions.

[0028] A limiting protrusion is formed on the outer side of the fixed connection block 102 and the clamping hook 103 at the end of the external thread, which is used to limit the movement of the reinforced threaded tube 203.

[0029] In this embodiment: when the D-shaped lock buckle 1 is in use, the locking rod 104 can be rotated and opened with the rotating connection part with the fixed connection block 102 as the center. When the locking rod 104 is in a closed state, the locking rod 104, the fixed connection block 102 and the snap hook 103 can be connected by the reinforcement component 2, so as to increase the lateral bearing capacity of the D-shaped lock buckle 1 and the longitudinal bearing capacity of the opening of the C-shaped fixing ring 101. The specific operation steps are as follows:

[0030] When the locking rod 104 is in the closed state, the rotating ring seat 201 can be manually rotated, and the rotating ring seat 201 drives the T-shaped linkage rod 204 to rotate in a circle, and the T-shaped linkage rod 204 drives the two reinforcement threaded cylinders 203 to rotate synchronously. At this time, the two reinforcement threaded cylinders 203 are separated from each other along the two external thread tracks at the upper and lower ends of the locking rod 104, and finally the two reinforcement threaded cylinders 203 are respectively threadedly connected with the external threads on the outer sides of the fixed connection block 102 and the clamping hook 103 (it should be noted that: at this time, the two reinforcement threaded cylinders 203 maintain a threaded connection state with the upper and lower ends of the locking rod 104, and the two reinforcement threaded cylinders 203 of the T-shaped linkage rod 204 maintain a sliding contact state);

[0031] By reinforcing the threaded connection between the threaded barrel 203 and the fixed connecting block 102 and the snap hook 103, the connection reinforcement between the locking rod 104 and the fixed connecting block 102 and the snap hook 103 can be achieved. In this way, when the D-type lock buckle 1 is subjected to tension, in addition to the original contact part between the C-type fixing ring 101 and the locking rod 104 being able to share the tension, the reinforced threaded connection between the threaded barrel 203 and the locking rod 104, the fixed connecting block 102 and the snap hook 103 can also share a part of the tension, thereby further improving the longitudinal bearing capacity of the opening of the C-type fixing ring 101. At the same time, the wrapping of the locking rod 104 and the fixed connecting block 102 and the snap hook 103 by reinforcing the threaded barrel 203 can improve the lateral bearing capacity of the D-type lock buckle 1.

[0032] Please refer to Figures 1 to 4 An annular groove 105 is integrally formed in the middle of the outer side of the locking rod 104, and a limiting ring 202 is fixedly connected to the inner side of the rotating ring seat 201, and the limiting ring 202 is slidably sleeved with the annular groove 105;

[0033] A plurality of T-shaped linkage rods 204 are arranged in a ring around the rotating ring seat 201 , and a “T”-shaped rail groove slidably connected to the plurality of T-shaped linkage rods 204 is provided on the inner side of the reinforcing threaded cylinder 203 .

[0034] In this embodiment: the cooperation between the limiting ring 202 and the annular groove 105 can provide rotation guidance and vertical movement limitation for the rotating ring seat 201;

[0035] Through the cooperation between the T-shaped linkage rod 204 and the “T”-shaped rail groove, the reinforcement threaded cylinder 203 can be driven to rotate by the T-shaped linkage rod 204 and can move up and down along the outer wall of the T-shaped linkage rod 204 .

[0036] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric power maintenance safety lock, comprising a D-shaped lock (1) consisting of a C-shaped fixing ring (101), a fixing connection block (102), a snap hook (103), and a locking rod (104), wherein the fixing connection block (102) and the snap hook (103) are symmetrically fixed to the bottom and top of the opening end of the C-shaped fixing ring (101), and the locking rod (104) is rotatably connected to the outside of the fixing connection block (102) and snapped to the outside of the snap hook (103), so as to achieve blocking of the opening of the C-shaped fixing ring (101), characterized in that: An outer wall at a position where the locking rod (104) contacts the fixed connection block (102) and the snap-on hook (103) is formed with an external thread, and a reinforcement component (2) is provided on the outer side of the locking rod (104), and the reinforcement component (2) is used to synchronously connect and reinforce the locking rod (104) and the fixed connection block (102), and the locking rod (104) and the snap-on hook (103); The reinforcement component (2) comprises a rotating ring seat (201), a reinforcement threaded cylinder (203), and a T-shaped linkage rod (204); The rotating ring seat (201) and the reinforcing threaded barrel (203) are rotatably sleeved on the outer side of the locking rod (104); two reinforcing threaded barrels (203) are provided, and the two reinforcing threaded barrels (203) are symmetrically distributed up and down with the rotating ring seat (201) as the center, and the reinforcing threaded barrel (203) is threadedly connected to the outer wall external thread of the locking rod (104); The T-shaped linkage rod (204) is symmetrically fixed to the upper and lower ends of the rotating ring seat (201) and passes through the two reinforcing threaded cylinders (203); When the rotating ring seat (201) rotates, the two reinforcing threaded cylinders (203) are driven to rotate synchronously through the T-shaped linkage rod (204), so that the two reinforcing threaded cylinders (203) are respectively threadedly connected to the external threads on the outside of the fixed connection block (102) and the clamping hook (103), thereby realizing synchronous connection and reinforcement of the locking rod (104) and the fixed connection block (102) and the clamping hook (103).

2. The electric maintenance safety lock according to claim 1, characterized in that: An annular groove (105) is integrally formed in the middle of the outer side of the locking rod (104), and a limiting ring (202) is fixedly connected to the inner side of the rotating ring seat (201), and the limiting ring (202) is slidably sleeved with the annular groove (105).

3. The electric maintenance safety lock according to claim 1, characterized in that: A plurality of T-shaped linkage rods (204) are arranged in a ring shape with the rotating ring seat (201) as the center, and a "T"-shaped rail groove slidably connected to the plurality of T-shaped linkage rods (204) is provided on the inner side of the reinforcing threaded cylinder (203).

4. The electric maintenance safety lock according to claim 1, characterized in that: The spiral direction of the external thread on the outside of the snap hook (103) and the top of the locking rod (104) is opposite to the spiral direction of the external thread on the outside of the fixed connection block (102) and the bottom of the locking rod (104), and the spiral direction of the internal threads of the two reinforcing threaded barrels (203) matches the spiral direction of the two external threads.

5. The electric maintenance safety lock according to claim 1, characterized in that: The fixed connection block (102) and the clamping hook (103) are provided with a limiting protrusion formed at the end of the external thread, which is used to limit the movement of the reinforcing threaded barrel (203).

Images