CN116139423A

CN116139423A - Safety device

Info

Publication number: CN116139423A
Application number: CN202211425258.7A
Authority: CN
Inventors: 叶祺; 邓小康; 张惠荣; 陈勇智; 董彦彬; 骆文浩; 陈奕戈; 刘烨; 张建锋; 王浩宇; 张健良; 何景峰; 卢顺辉; 何嘉龙; 钟浩志; 徐建平; 周国诚; 罗庆雄
Original assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-05-23

Abstract

The invention discloses a safety device which is used for climbing a telegraph pole, wherein the safety device comprises a waistband and a safety belt, the waistband is provided with a first annular structure which is used for being sleeved on a staff, two connecting buckles are arranged at intervals on the first annular structure, two ends of the safety belt are respectively connected with the two connecting buckles, so that the waistband, the two connecting buckles and the safety belt can be connected to form a second annular structure, the second annular structure can be sleeved on the outer wall of the telegraph pole, one side surface of the connecting buckle, facing the telegraph pole, is provided with an inward concave arc surface which is used for being abutted with the outer wall of the telegraph pole, and the connecting buckles are also provided with hand-holding parts. The safety device can enable the arc-shaped surface of the connecting buckle to be tightly attached to the outer wall of the telegraph pole, can assist workers to climb through the hand-holding part, can lift the connecting buckle and the safety belt through the hand-holding part, does not need to vacate hands to lift the safety belt when assisting in climbing, is convenient to climb, and meanwhile can enable the safety belt to be tightly attached to the telegraph pole all the time and bear force, so that the falling risk is reduced.

Description

Safety device

Technical Field

The invention relates to the technical field of power maintenance auxiliary equipment, in particular to a safety device.

Background

During power construction or maintenance operation, staff needs to climb a telegraph pole by using a climbers. In order to prevent the climbers from slipping during climbing, the staff also need to wear a safety belt.

Most of the current safety belts are single-safety belt type safety belts, which mainly comprise a waistband and a safety belt. Before climbing, the waistband is required to be sleeved on the waist of a worker, and a safety belt on the waistband is sleeved on the telegraph pole. At the in-process of climbing, the staff goes upward in turn through wearing the both feet of climbers to rely on the outside pulling force of health to make the winding of safety belt firmly on the wire pole, both hands are holding the wire pole simultaneously and are assisted upwards climbing, still need vacate both hands at the climbing in-process and mention the safety belt and go upward. Therefore, this makes the staff climb inconvenient, causes work inefficiency, and when lifting the safety belt upward, the safety belt appears to be in the lax state, and the staff exists the risk of falling.

Disclosure of Invention

The aim of the embodiment of the invention is that: the safety device is simple in structure, convenient for workers to climb and good in safety.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a safety device for climbing wire pole, safety device includes waistband and safety belt, the waistband is provided with first loop configuration, first loop configuration is used for the cover to establish on staff's the body, the interval is provided with two connector links on the first loop configuration, the both ends of safety belt respectively with two the connector links are connected, so that waistband, two connector links with the safety belt can be connected and form second loop configuration, second loop configuration is used for the cover to be established the periphery of wire pole, the connector link orientation a side of wire pole is provided with the arcwall face of indent, the arcwall face be used for with the outer wall butt of wire pole, the connector link still is provided with the hand portion of conveniently gripping.

As a preferable mode of the safety device, at least one end of the connecting buckle, which is far away from the waistband, is provided with an adjusting mechanism, the safety belt is connected with the connecting port through the adjusting mechanism, and the adjusting mechanism can adjust the length of the part of the safety belt between the two connecting buckles.

As a preferable scheme of the safety device, the regulating mechanism comprises a lock sleeve, a clamping hook and a first elastic piece, wherein the lock sleeve is provided with a penetrating slot, one side of the safety belt is provided with a plurality of tooth-shaped structures along the penetrating direction of the lock sleeve at intervals, the clamping hook is rotationally arranged in the penetrating slot, a gap for the safety belt to penetrate is reserved between the clamping hook and the wall of the penetrating slot, so that the clamping hook can be clamped between any two tooth-shaped structures, and the first elastic piece is connected with the clamping hook, so that the clamping hook always has a rotating trend of being abutted to the safety belt, and the safety belt is locked.

As a preferable scheme of the safety device, the adjusting mechanism further comprises a first unlocking piece, the first unlocking piece comprises a first rotating shaft and a first operating part, the first rotating shaft is rotatably arranged in the penetrating groove, the clamping hook is connected with the first rotating shaft, the first operating part is arranged outside the lock sleeve, the lock sleeve is provided with a first through hole communicated with the penetrating groove, one end of the first rotating shaft penetrates through the first through hole to be connected with the first operating part, and the first rotating shaft can rotate synchronously with the clamping hook through rotation of the first operating part so as to unlock the safety belt.

As a preferable mode of the safety device, the moving direction of the safety belt comprises an X direction and a Y direction, a guiding inclined plane is arranged on one side of the toothed structure along the X direction, the guiding inclined plane is inclined upwards from one side of the X direction to one side of the Y direction, the clamping hook is abutted to the guiding inclined plane, when the safety belt moves along the X direction, the clamping hook can move between any two toothed structures along the guiding inclined plane, when the safety belt has a trend of moving along the Y direction, the clamping hook abuts against the toothed structure to lock the safety belt.

As a preferred solution of the safety device, a side of the safety belt facing away from the toothed structure is provided with anti-skid threads, which are used for fitting the telegraph pole.

As a preferable mode of the safety device, one end of the waistband is provided with a connecting ring, and the other end of the waistband is provided with a lock catch, and the lock catch is detachably connected with the connecting ring, so that the waistband is formed with the first annular structure.

As a preferred scheme of the safety device, the waistband is movably provided with a locking mechanism, and the lock catch or the connecting ring is arranged on the locking mechanism so as to adjust the circumference of the first annular structure.

As a preferred scheme of safety device, locking mechanism includes casing, two connecting blocks and two clamp splice, the casing is provided with the installation cavity, two the connecting block is all rotated and is set up in the installation cavity, the both ends of every clamp splice respectively with two the connecting block rotates to be connected, and is formed with the confession between two clamp splice the clearance that the waistband passed rotates the connecting block can adjust two clearance between the clamp splice, at least one the connecting block is connected with the second elastic component, so that the connecting block has the drive two the rotation trend that the clamp splice pressed from both sides tightly.

As a preferred scheme of safety device, locking mechanism still includes second unblock piece, second unblock piece includes second pivot and second operating portion, second operating portion is located on the outer wall of casing, the lateral wall of casing is provided with the second through-hole, the one end of second pivot with the connecting block is connected, and the other end passes the second through-hole with second operating portion is connected, rotates second operating portion can order about the second pivot with the connecting block synchronous rotation is in order to the unblock waistband.

The beneficial effects of the invention are as follows: when the second annular structure cover is tightly on the outer wall of wire pole, two connector links can be located the both sides of wire pole for the arcwall face of two connector links can paste tightly on the outer wall of wire pole, with the area of contact between increase safety device and the wire pole, can increase frictional force, with supplementary staff's climbing, the hand portion of two connector links is located the both sides of staff respectively simultaneously, and the both hands of staff can grasp respectively and climb in the hand portion of two connector links and go upward, so that staff's power. This design not only can be through holding supplementary climbing of portion control connector link, still can mention connector link and safety belt climbing through holding the portion, need not to vacate both hands and mention the safety belt when supplementary climbing, helps the staff to scramble, and the safety belt can paste tight wire pole all the time when mentioning simultaneously to make the safety belt atress all the time, thereby reduce the risk of falling.

Drawings

The invention is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a safety device according to an embodiment of the invention.

Fig. 2 is a cross-sectional view showing the connection of the adjusting mechanism and the seat belt according to the embodiment of the present invention.

Fig. 3 is a schematic view of a first structure of a seat belt according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of an adjustment mechanism according to an embodiment of the present invention.

Fig. 5 is a schematic view showing a second construction of the seat belt according to the embodiment of the present invention.

Fig. 6 is a cross-sectional view of a locking mechanism according to an embodiment of the present invention.

Fig. 7 is a front view of a locking mechanism according to an embodiment of the present invention.

In the figure:

1. a waistband; 2. a connecting buckle; 21. an arc surface; 22. a hand grip; 3. a safety belt; 31. a tooth-like structure; 311. a guide slope; 32. anti-skid lines; 4. an adjusting mechanism; 41. a lock sleeve; 411. inserting slots; 42. a clamping hook; 43. a first elastic member; 44. a first unlocking member; 441. a first rotating shaft; 442. a first operation section; 5. a connecting ring; 6. locking; 7. a locking mechanism; 71. a housing; 711. a mounting cavity; 72. a connecting block; 73. clamping blocks; 74. a second unlocking member; 741. a second rotating shaft; 742. a second operation section; 8. a slip preventing protrusion; 9. a wear-resistant sleeve;

100. a wire pole.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the safety device provided by the invention is used for climbing a telegraph pole 100, and comprises a waistband 1 and a safety belt 3, wherein the waistband 1 is provided with a first annular structure, the first annular structure is used for being wound on a worker, two connecting buckles 2 are arranged on the first annular structure at intervals, two ends of the safety belt 3 are respectively connected with the two connecting buckles 2, so that the waistband 1, the two connecting buckles 2 and the safety belt 3 can be connected to form a second annular structure, and the second annular structure is used for being sleeved on the periphery of the telegraph pole 100. The connector link 2 is the ring-type, and connector link 2 is provided with concave arcwall face 21 towards a side of wire pole 100, and arcwall face 21 is used for the outer wall butt with wire pole 100, and connector link 2 still is provided with the portion of holding 22 that makes things convenient for the staff to grasp, holds portion 22 and arcwall face 21 and is located the relative both sides of connector link 2 respectively.

When climbing wire pole 100, the climbers are dressed to staff's both feet, can wear safety device through first annular structure simultaneously to ensure staff's safety. When the periphery at wire pole 100 is tightly overlapped to the second loop configuration, two connector links 2 can be located the both sides of wire pole 100 for arc face 21 of two connector links 2 pastes tightly on the outer wall of wire pole 100, with the area of contact between increase safety device and wire pole 100, can increase frictional force, with supplementary staff's climbing, the portion 22 of holding of two connector links 2 is located the both sides of staff respectively simultaneously, makes the both hands of staff grasp respectively at the portion 22 climbing of holding of two connector links 2, makes things convenient for the staff to exert oneself. This design not only can be through holding portion 22 control connector link 2 supplementary climbing, but also can mention connector link 2 and safety belt 3 through holding portion 22 simultaneously and climb and go upward, need not to vacate both hands and mention safety belt 3 when supplementary climbing, help the staff to climb, and the in-process of mentioning safety belt 3, safety belt 3 can paste the telegraph pole 100 outer wall all the time in addition to make safety belt 3 be in the stress all the time, thereby reduce the risk that the staff falls.

Preferably, the arcuate surface 21 is provided with a plurality of cleats 8 in order to increase the friction of the connector clip 2 with the pole 100.

In particular, the stud 8 may be made of rubber.

In this embodiment, the portion of the waistband 1 between the two connector buckles 2 is provided with a wear resistant sleeve 9. Because waistband 1 also pastes close the wire pole 100 outer wall and removes when the climbing, waistband 1 has the risk of wearing and tearing, can protect waistband 1 through setting up wear-resisting cover 9, reduces the wearing and tearing of waistband 1.

Specifically, one end of at least one connector link 2 away from the waistband 1 is provided with adjustment mechanism 4, and the safety belt 3 is connected with the connector link 2 through adjustment mechanism 4, and adjustment mechanism 4 can adjust the length of the part of safety belt 3 between two connector links 2. Because some telegraph poles 100 adopt the structure of upper narrow and lower wide, namely be close to the top of telegraph pole 100 more, the external diameter of telegraph pole 100 is less, can adjust the length of the part that safety belt 3 is located between two connector links 2 through adjustment mechanism 4 at climbing in-process to adjust the elasticity of second loop configuration, make at climbing in-process second loop configuration can be in the stress all the time, and the cover is tight on telegraph pole 100.

In this embodiment, as shown in fig. 2 to 4, the adjusting mechanism 4 includes a lock sleeve 41, a hook 42 and a first elastic member 43, the lock sleeve 41 is provided with a penetration slot 411 through which the safety belt 3 passes, and the safety belt 3 can be selectively penetrated in the penetration slot 411, so that the second annular structure can be sleeved on the telegraph pole 100. One side of the safety belt 3 is provided with a plurality of toothed structures 31 along the self penetration direction interval, the clamping hook 42 is rotatably arranged in the penetration slot 411, a gap for the safety belt 3 to penetrate is formed between the clamping hook 42 and the slot wall of the penetration slot 411, the first elastic piece 43 is connected with the clamping hook 42, the clamping hook 42 always has a rotation trend of abutting against the safety belt 3, and the clamping hook 42 can be clamped between the two toothed structures 31 to limit the movement of the safety belt 3.

The first elastic member 43 is, for example, a torsion spring.

Specifically, the moving direction of the webbing 3 includes an X direction, which is a direction in which the second loop structure is tightened, and a Y direction, which is a direction in which the second loop structure is loosened, in the present embodiment. The tooth-like structure 31 is provided with the direction inclined surface 311 along one side of X direction, and the direction inclined surface 311 is upwards inclined by one side of X direction towards one side of Y direction, and the pothook 42 can with direction inclined surface 311 butt, and when the safety belt 3 moves along the X direction, reduce the length of the part that the safety belt 3 is located between two connector links 2 promptly, and the pothook 42 can move to between arbitrary two tooth-like structures 31 along the direction inclined surface 311 of each tooth-like structure 31 to take up the second annular structure, when the safety belt 3 has the trend of removing along the Y direction, the pothook 42 supports tightly tooth-like structure 31 to lock the safety belt 3, prevents that the second annular structure from loosening. The clamping hook 42 of the design can unidirectionally lock the safety belt 3, and is convenient for adjusting the tightness of the second annular structure so as to ensure that the second annular structure is always sleeved on the telegraph pole 100 in the climbing process.

Further, a first unlocking member 44 is disposed in the insertion slot 411, the first unlocking member 44 includes a first rotating shaft 441 and a first operating portion 442, the first rotating shaft 441 is rotatably disposed in the insertion slot 411, the hook 42 is connected with the first rotating shaft 441 to enable the first rotating shaft 441 and the hook 42 to coaxially rotate, the first operating portion 442 is located outside the lock sleeve 41, the lock sleeve 41 is provided with a first through hole communicated with the insertion slot 411, one end of the first rotating shaft 441 passes through the first through hole to be connected with the first operating portion 442, and rotating the first operating portion 442 enables the first rotating shaft 441 and the hook 42 to synchronously rotate to unlock the seat belt 3.

Further, as shown in fig. 5, a side of the safety belt 3 facing away from the toothed structure 31 is provided with anti-skid patterns 32, and the anti-skid patterns 32 are used for being abutted against the telegraph pole 100. This design can further increase the friction between the safety device and the pole 100, preventing the safety device from slipping off.

For example, the anti-skid lines 32 are arrow lines, and when climbing upwards, as the outer diameter of the telegraph pole 100 is gradually reduced, the contact surface between the anti-skid lines 32 and the safety belt 3 is smaller, the friction force is smaller, and climbing upwards is facilitated; when climbing downwards, the contact area between the anti-skid patterns 32 and the safety belt 3 is increased, the friction force is also increased, and the falling can be effectively prevented.

In one embodiment, one of the links 2 is provided with an adjustment mechanism 4 and the other link 2 is provided with a retractor mechanism (not shown) for receiving the seat belt 3.

The winding mechanism comprises a third rotating shaft and a driving piece, one end of the safety belt 3 is connected with the third rotating shaft, and the driving piece is connected with the third rotating shaft to drive the third rotating shaft to rotate. Preferably, the driving piece is a motor, and when climbing, the motor is stopped, and external force is applied to pull the safety belt 3 to drive the third rotating shaft to rotate so as to pull out the safety belt 3 to be connected with the adjusting mechanism 4; when the safety device is not used, the third rotating shaft can be driven to rotate by the motor so as to rapidly wind up the safety belt 3.

Specifically, one end of the waistband 1 is provided with a connecting ring 5, the other end is provided with a lock catch 6, and the lock catch 6 is detachably connected with the connecting ring 5, so that the waistband 1 is formed with a first annular structure. The waistband 1 can be wound on the body of a worker through the connecting ring 5 and the lock catch 6 so as to be convenient for the worker to wear.

Further, the waistband 1 is movably provided with a locking mechanism 7, and the lock catch 6 or the connecting ring 5 is arranged on the locking mechanism 7. Due to the different statures of different staff members, the design can adjust the circumference of the first annular structure by adjusting the position of the locking mechanism 7 on the waistband 1, so that the first annular structure can be sleeved on the body of the staff member.

In this embodiment, as shown in fig. 6, the locking mechanism 7 includes a housing 71, two connection blocks 72 and two clamping blocks 73, the housing 71 is provided with a mounting cavity 711, the housing 71 is provided with an opening communicating with the mounting cavity 711, the end of the waistband 1 can penetrate through the opening and penetrate in the mounting cavity 711, the two connection blocks 72 are all rotatably arranged in the mounting cavity 711, the two ends of each clamping block 73 are respectively rotatably connected with the two connection blocks 72, a gap for the waistband 1 to penetrate is formed between the two clamping blocks 73, and the gap between the two clamping blocks 73 can be adjusted by rotating the connection blocks 72. It will be appreciated that the parallelogram linkage is formed between the two connecting blocks 72 and the two clamping blocks 73, the centre of rotation is away from the four rotational nodes of the parallelogram linkage, and when one of the connecting blocks 72 is rotated, the shape of the parallelogram linkage changes, so that the gap between the two clamping blocks 73 can also be changed accordingly, to clamp or unclamp the waistband 1.

Specifically, the second elastic member (not shown) is connected to at least one of the connection blocks 72, and the second elastic member drives the connection block 72 to have a rotation tendency to drive the two clamping blocks 73 to clamp, so that the two clamping blocks 73 can keep clamping the waistband 1, and the waistband 1 is prevented from loosening.

The second elastic member is a torsion spring, for example.

Further, as shown in fig. 6 and 7, the locking mechanism 7 further includes a second unlocking member 74, the second unlocking member 74 includes a second rotating shaft 741 and a second operating portion 742, the second operating portion 742 is located on an outer wall of the housing 71, a second through hole is provided on a side wall of the housing 71, one end of the second rotating shaft 741 is connected with the connecting block 72, the other end passes through the second through hole to be connected with the second operating portion 742, and rotating the second operating portion 742 can drive the second rotating shaft 741 and the connecting block 72 to rotate synchronously, so as to unlock the waistband 1.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A safety device for climbing a utility pole, the safety device comprising:

the waistband is provided with a first annular structure, the first annular structure is used for being sleeved on the body of a worker, two connecting buckles are arranged on the first annular structure at intervals, an inwards concave arc-shaped surface is arranged on one side surface of each connecting buckle, which faces the telegraph pole, the arc-shaped surface is used for being abutted to the outer wall of the telegraph pole, and a hand holding part convenient to grasp is further arranged on each connecting buckle;

the safety belt, the both ends of safety belt respectively with two the connector link is connected, so that waistband, two the connector link with the safety belt can connect and form the second annular structure, the second annular structure is used for the cover to establish the periphery of wire pole.

2. The safety device according to claim 1, wherein an end of at least one of the links remote from the waist belt is provided with an adjusting mechanism by which the seat belt is connected to the link, the adjusting mechanism being capable of adjusting the length of a portion of the seat belt between the two links.

3. The safety device according to claim 2, wherein the adjusting mechanism comprises a lock sleeve, a hook and a first elastic member, the lock sleeve is provided with a threading slot, one side of the safety belt is provided with a plurality of tooth-shaped structures at intervals along the self threading direction, the hook is rotatably arranged in the threading slot, a gap for the safety belt to pass through is formed between the hook and the slot wall of the threading slot, so that the hook can be clamped between any two tooth-shaped structures, and the first elastic member is connected with the hook, so that the hook always has a rotation trend of abutting against the safety belt to lock the safety belt.

4. The safety device according to claim 3, wherein the adjusting mechanism further comprises a first unlocking member, the first unlocking member comprises a first rotating shaft and a first operating portion, the first rotating shaft is rotatably arranged in the threading slot, the clamping hook is connected with the first rotating shaft, the first operating portion is arranged outside the lock sleeve, the lock sleeve is provided with a first through hole communicated with the threading slot, one end of the first rotating shaft penetrates through the first through hole to be connected with the first operating portion, and the first rotating shaft can be rotated by rotating the first operating portion to enable the first rotating shaft to rotate synchronously with the clamping hook so as to unlock the safety belt.

5. A safety device according to claim 3, wherein the direction of movement of the safety belt comprises an X direction and a Y direction, the side of the toothed structure facing the X direction is provided with a guide ramp, the guide ramp is inclined upwardly from the side of the X direction towards the side of the Y direction, the catch abuts against the guide ramp, when the safety belt is moved in the X direction, the catch can move along the guide ramp between any two of the toothed structures, when the safety belt has a tendency to move in the Y direction, the catch abuts against the toothed structure to lock the safety belt.

6. A safety device according to claim 3, wherein a side of the safety belt facing away from the toothed structure is provided with anti-slip features for engaging the pole.

7. A safety device according to any one of claims 1 to 6, wherein one end of the waistband is provided with a connector ring and the other end is provided with a catch, the catch being detachably connected to the connector ring so that the waistband is formed with the first loop-like structure.

8. The safety device according to claim 7, wherein the waist belt is movably provided with a locking mechanism, and the lock catch or the connecting ring is provided on the locking mechanism to adjust the circumference of the first annular structure.

9. The safety device according to claim 8, wherein the locking mechanism comprises a housing, two connecting blocks and two clamping blocks, the housing is provided with a mounting cavity, the two connecting blocks are all rotatably arranged in the mounting cavity, two ends of each clamping block are respectively rotatably connected with the two connecting blocks, a gap for the waistband to pass through is formed between the two clamping blocks, the gap between the two clamping blocks can be adjusted by rotating the connecting blocks, and at least one connecting block is connected with a second elastic piece so that the connecting blocks have a rotation trend for driving the two clamping blocks to clamp.

10. The safety device according to claim 9, wherein the locking mechanism further comprises a second unlocking member, the second unlocking member comprises a second rotating shaft and a second operating portion, the second operating portion is located on the outer wall of the housing, a second through hole is formed in the side wall of the housing, one end of the second rotating shaft is connected with the connecting block, the other end of the second rotating shaft penetrates through the second through hole to be connected with the second operating portion, and the second rotating shaft and the connecting block can be driven to rotate synchronously by rotating the second operating portion so as to unlock the waistband.