WO2022148066A1

WO2022148066A1 - Safety protection device for elevator maintenance

Info

Publication number: WO2022148066A1
Application number: PCT/CN2021/120166
Authority: WO
Inventors: 徐方; 沈振宇; 董琴; 朱大年; 潘凯凯
Original assignee: 安川双菱电梯有限公司
Priority date: 2021-01-11
Filing date: 2021-09-24
Publication date: 2022-07-14
Also published as: CN112678642A; CN112678642B

Abstract

A safety protection device for elevator maintenance, comprising a supporting mechanism (1), protection mechanisms (2), and maintenance mechanisms (3). The supporting mechanism (1) comprises a base (101); a soft cushion (103) is fixedly connected to the top surface of the base (101); a pedal (102) is fixedly connected to the top surface of the soft cushion (103); there are two protection mechanisms (2) that are respectively arranged at the two sides of the top surface of the soft cushion (103); each protection mechanism (2) comprises a connection seat (201); the connection seat (201) is fixedly connected to the top surface of the soft cushion (103); an hydraulic oil is filled in the soft cushion (103); a connection rod A (202) is fixedly connected to the end of the connection base (201) close to the outer side of the soft cushion (103); a hole is formed in the end of the front surface of the connection rod A (202) distant from the connection base (201), and a connection rod B (203) is sleeved into the hole; and a clamping claw (204) is fixedly connected to the end of the connection rod B (203) distant from the connection rod A (202). By arranging the protection mechanisms (2), when a maintenance worker steps on the upper portion of an elevator, the clamping claws (204) are automatically connected to a steel cable, and the position of the elevator is limited by using the steel cable and the stability of the elevator is increased, so that the maintenance worker who performs maintenance from the upper portion of the elevator is protected, a protection process is automatic, and the device is convenient to use and high in efficiency.

Description

A safety protection device for elevator maintenance

technical field

The invention relates to the technical field of elevators, in particular to a safety protection device for elevator maintenance.

Background technique

During the use of the elevator, the elevator will be out of service due to problems such as elevator aging. In order to make the elevator re-operate and eliminate the problem, maintenance workers need to go to the top of the elevator to repair the elevator, and in order to ensure the safety of maintenance workers during maintenance, It is necessary to use protective safety devices to protect the maintenance workers during the maintenance process.

The existing patent number CN103130061B proposes an elevator maintenance device, which has the functions of effectively preventing the abnormal drop of the counterweight, and preventing a part of the operator's body from being clamped by the counterweight, thereby improving safety. It is very likely that the elevator is in the suspended state. For safety reasons, maintenance workers need to maintain the elevator from above the elevator. This device cannot protect the maintenance workers who repair the suspended elevator from above.

The existing patent number CN108046081B proposes an elevator rope breaking protection device, which has the advantage of pulling the safety gear by the mechanical action of the speed limiter to make the car stop on the guide rail when the broken rope causes the car to fall. The time is that after the car has fallen, the inertia and impact force generated by the first time the car falls will easily throw the maintenance worker off. Even if the maintenance worker is protected by a sling and other anti-fall devices, it is easy to cause hazards such as collision and extrusion. The case of maintenance workers happens.

Therefore, there is an urgent need for a safety protection device for elevator maintenance to solve the above problems.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides a safety protection device for elevator maintenance to solve the above problems.

(2) Technical solutions

In order to achieve the above purpose, the present invention provides the following technical solutions: a safety protection device for elevator maintenance, including a support mechanism, a protection mechanism and an overhaul mechanism, the support mechanism includes a base, the top surface of the base is fixedly connected with a soft pad, and the top surface of the soft pad is fixed A pedal is connected, a hole is formed on the top surface of the soft pad, and a bolt A is fixedly connected to the hole through a rotating bearing. The top surface of the base is provided with a threaded hole corresponding to the position of the bolt A and is threadedly connected with the bolt A. The number of protective mechanisms is Two and are respectively arranged on both sides of the top surface of the soft pad. The number of maintenance mechanisms is two and is respectively set on the two protective mechanisms. The inner wall is fixedly connected with a spring A, the interior of the cushion is filled with hydraulic oil, the end of the connecting seat close to the outer side of the cushion is fixedly connected with a connecting rod A, and the end of the connecting rod A that is far from the connecting seat is provided with a hole and a connecting rod is inserted into the hole. Rod B, the end of the connecting rod B away from the connecting rod A is fixedly connected with a jaw, the jaw is C-shaped and the concave surfaces of the two jaws are away from each other, and the inner walls of the upper and lower ends of the front and rear of the jaw are fixedly connected with clamping pads , the top surface of the connecting rod A is fixedly connected with the cylinder A through the hinge of the rotating shaft. One end of the piston is fixedly connected with the connecting rod B through the hinge of the rotating shaft, and the bottom surface of the piston is communicated with the soft pad through the trachea A.

Preferably, the interiors of the front and rear sides of the claws are in a hollow state, and several slots are provided at equal intervals on the corresponding surfaces of the inner walls of the front and rear sides of the claws. There is a slider, the side of the slider located inside the claw is fixedly connected to the limit plate, the end of the limit plate located inside the claw is fixedly connected with an elastic expansion piece, and the end of the elastic expansion piece away from the slider is fixedly connected to the inner wall of the claw, The middle part of the cylinder A is communicated with the inside of the front and rear sides of the jaw through the trachea B.

Preferably, sliding grooves are provided on the front and rear corresponding surfaces of several of the sliding blocks, the inner walls of both sides of the sliding grooves are fixedly connected with a spring B, and one end of the spring B near the middle of the sliding groove is fixedly connected with a sliding column, and the sliding column is connected with the inner wall of the sliding groove. In a nesting relationship, the front side of the sliding column is fixedly connected with a plug board, and the plug board is a triangular prism.

Preferably, airbags are fixedly connected to both sides of the insert plate, and the airbags are communicated with the inside of the clamping claw through a connecting pipe.

Preferably, the maintenance mechanism includes a limit plate, the limit plate is a C-shaped body and has rectangular grooves at equal intervals on the side surface, the top surface and the bottom surface of the limit plate are fixedly connected with a fixed plate, and the side of the fixed plate is provided with threaded holes And bolt B is threadedly connected, a threaded hole is opened on the side of the jaw corresponding to the position of bolt B and is threadedly connected with bolt B, and a hole is formed on the side of the jaw corresponding to the position of the limit plate and is in a nested relationship with the limit plate. Corresponding to the side of the limit plate corresponding to the slider, the front of the claw is fixedly connected and communicated with a cylinder B, the interior of the cylinder B is hollow, the cylinder B is fixedly connected and communicated with the trachea B, and the top surface of the cylinder B is fixedly connected and communicated There is a cylinder C, the top of the cylinder C is provided with a hole and a sliding rod is inserted into the hole, and a sensor is fixedly installed on the front of the claw above the sliding rod. The sensor is made of magnet material and attracts each other with the cylinder B.

(3) Beneficial effects

Compared with the prior art, the present invention provides a safety protection device for elevator maintenance, which has the following beneficial effects:

1. This kind of safety protection equipment for elevator maintenance, through the setting of the protection mechanism, when the maintenance worker steps on the elevator, the claws are automatically connected to the steel cable, and the steel cable is used to limit the elevator and increase the elevator. Therefore, it can protect the maintenance workers from the top of the elevator, the protection process is automated, the use is convenient and the efficiency is high.

2. This kind of safety protection equipment for elevator maintenance, through the setting of the slider, after the claw and the wire rope are inserted, it automatically extends out to clamp the wire rope, so as to improve the clamping strength of the wire rope, so as to improve the elevator The strength of the connection with the steel cable further improves the stability, and through the extension of the slider at different positions with the steel cable, the effect of tightly clamping the steel cable and limiting the position of the steel cable side is respectively realized, and the The position is limited to prevent the rope from shaking with the pressure of the elevator, ensuring the stability of the standing area for maintenance workers, and improving maintenance efficiency and safety.

3. This kind of safety protection equipment for elevator maintenance, through the setting of the insert plate, after the slider corresponding to the steel cable is extended, the insert plate will change the position and angle along the twisted steel rope pattern until the insert plate. Insert into the twisted steel rope gap, realize complete clamping of the steel rope, greatly improve the stability of the clamping, and further improve the stability of the connection between the elevator and the steel rope.

4. This kind of safety protection equipment for elevator maintenance, through the setting of the air bag, after the claws and the insert plate clamp the wire rope, the air bag corresponding to the wire rope will infiltrate the lines formed by the wire rope through deformation, and cooperate with the wire rope. It further increases the stability of the connection with the insert plate, and increases the degree of sealing after the airbag corresponding to the steel cable is expanded, thereby increasing the effect of limiting the position of the steel cable. The airbag also has the advantage of ensuring that the steel cable will not collapse. When the steel rope with the risk of breaking is clamped, the steel rope can be squeezed so that the position of the steel rope will not be shifted when it is stressed, so as to avoid the problem of breakage and ensure that the maintenance personnel will not break the steel rope when overhauling the elevator. problem, and it is convenient for maintenance personnel to replace the wire rope with the corresponding fracture risk.

5. This kind of safety protection equipment for elevator maintenance, through the setting of the bolt A, the maintenance personnel can control the expansion and contraction of the cushion by rotating the bolt A, so as to control the activation of the device and the extrusion amount of the hydraulic oil, and improve the performance of the device. Applicability and flexibility.

6. This kind of safety protection equipment for elevator maintenance cooperates with the support mechanism and the protection mechanism through the setting of the maintenance mechanism. After a simple operation, the function of the device can be switched from the maintenance worker on the protection elevator to the detection wire rope. Completeness, with the advantages of not taking up too much space, greatly improving the practicability of the device.

Description of drawings

Fig. 1 is the front sectional structure schematic diagram of the present invention;

Fig. 2 is the enlarged view of A place of Fig. 1 of the present invention;

Fig. 3 is the enlarged view of B place of Fig. 1 of the present invention;

Fig. 4 is the front sectional structure schematic diagram of the jaw of the present invention;

Fig. 5 is the enlarged view of the C place of Fig. 4 of the present invention;

Fig. 6 is the side sectional structure schematic diagram of the jaw of the present invention;

FIG. 7 is a schematic view of the structure of the clamp pad of the present invention.

In the figure: 1. supporting mechanism; 101, base; 102, pedal; 103, cushion; 104, spring A; 105, bolt A; 2, protective mechanism; 201, connecting seat; 202, connecting rod A; 203, connecting rod Rod B; 204, Claw; 205, Cylinder A; 206, Piston; 207, Pull Rod; 208, Trachea A; 209, Trachea B; 2010, Clamp; Limit plate; 2014, slide column; 2015, insert plate; 2016, air bag; 2017, spring B; 3, maintenance mechanism; 301, limit plate; 302, fixing plate; 303, bolt B; 304, cylinder B; 305, cylinder C; 306, sliding rod; 307, sensor; 4, slot; 5, card slot; 6, chute.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-7, a safety protection device for elevator maintenance includes a support mechanism 1, a protection mechanism 2 and an overhaul mechanism 3. The support mechanism 1 includes a base 101. The top surface of the base 101 is fixedly connected with a soft pad 103. The soft pad 103 The top surface is fixedly connected with a pedal 102, the number of protection mechanisms 2 is two and they are respectively arranged on both sides of the top surface of the soft pad 103, the number of maintenance mechanisms 3 is two and they are respectively arranged on the two protection mechanisms 2, the protection mechanism 2 Including a connecting seat 201, the connecting seat 201 is fixedly connected to the top surface of the soft pad 103, the upper and lower inner walls of the soft pad 103 are fixedly connected with a spring A104, the interior of the soft pad 103 is filled with hydraulic oil, and the end of the connecting seat 201 close to the outer side of the soft pad 103 is fixed A connecting rod A202 is connected, the front end of the connecting rod A202 away from the connecting seat 201 is provided with a hole and a connecting rod B203 is sleeved in the hole, and the end of the connecting rod B203 away from the connecting rod A202 is fixedly connected with a clamping claw 204, the clamping claw 204 is C The inner walls of the upper and lower ends of the front and rear of the jaws 204 are fixedly connected with a clamp pad 2010, and the top surface of the connecting rod A202 is fixedly connected with a cylinder A205 through the hinge of the rotating shaft. The side of A205 close to the connecting rod B203 is hollow and the inner wall is sleeved with a piston 206. The side of the piston 206 corresponding to the connecting rod B203 is fixedly connected with a pull rod 207. The bottom surface of the piston 206 is communicated with the cushion 103 through the air pipe A208. When the maintenance worker reaches the top of the elevator, he will first step on the pedal 102, and then the pedal 102 will transmit the pressure to the cushion 103, and the cushion 103 will be squeezed and deformed by force, and The hydraulic oil inside is injected into the cylinder A205 through the air pipe A208, the hydraulic oil injected in the cylinder A205 pushes the piston 206 to slide upward, and when the piston 206 slides, it slides through the pull rod 207, thereby expanding the connection between the top of the connecting rod A202 and the connecting rod B203. The distance between the connecting rod B203 makes the connecting rod B203 rotate. After the connecting rod B203 rotates, the claw 204 is engaged with the wire rope, so as to connect the elevator with the wire rope. When the maintenance worker disengages the pedal 102, the spring A104 rebounds to drive the cushion 103 reset, so that the hydraulic oil in the cylinder A205 is drawn back into the cushion 103, and the piston 206 is pulled by negative pressure, thereby driving the claws 204 to break away from the wire rope and driving the connecting rod B203 to reset. When the worker steps on the top of the elevator, the claw 204 is automatically connected to the steel cable, and the steel cable is used to limit the elevator and increase the stability of the elevator, so as to protect the maintenance workers from the top of the elevator, and the protection process is automated. , easy to use and high efficiency.

The interiors of the front and rear sides of the jaws 204 are hollowed out. The corresponding surfaces of the inner walls of the front and rear sides of the jaws 204 are provided with a plurality of slots 4 at equal intervals. A sliding block 2012 is sheathed, and the side of the sliding block 2012 located inside the claw 204 is fixedly connected to the limit plate 2013 , and one end of the limit plate 2013 located inside the claw 204 is fixedly connected with an elastic expansion piece 2011 , and the elastic expansion piece 2011 is far away from the slider One end of the 2012 is fixedly connected to the inner wall of the jaw 204, and the middle of the cylinder A205 is connected to the front and rear sides of the jaw 204 through the air pipe B209. The air pipe B209 is injected into the claw 204, and then the hydraulic oil pushes the slider 2012 to the wire rope inside the claw 204, and the slot 5 limits the extension distance of the slider 2012. After the 2012 is fitted with the wire rope, the wire rope is tightly clamped by the pressure of hydraulic oil, and the sliding block 2012 that does not correspond to the wire rope will adhere to the sliding block 2012 at the corresponding position, so as to clamp the side of the wire rope. When the cushion 103 rebounds and the hydraulic oil is withdrawn, when the slider 2012 is not retracted into the claw 204, the claw 204 is restricted by the engagement between the slider 2012 and the wire rope and cannot move, thus To prevent the piston 206 from sliding in the cylinder A205 in advance, when the slider 2012 retracts back to the claw 204, the piston 206 slides with the withdrawn hydraulic oil and resets with the claw 204 and the connecting rod B203, through the setting of the slider 2012, After the claw 204 is inserted into the wire rope, it automatically extends out to clamp the wire rope, which improves the clamping strength of the wire rope, thereby improving the strength of the connection between the elevator and the wire rope, and further improving the stability. The sliders 2012 at different positions protrude, respectively to achieve the effect of tightly gripping the wire rope and limiting the position of the wire rope side, limiting the position of the wire rope to prevent the wire rope from shaking with the pressure of the elevator, Ensure the stability of the standing area of maintenance workers and improve maintenance efficiency and safety.

Several sliding blocks 2012 are provided with sliding grooves 6 on the corresponding surfaces at the front and back. Both inner walls of the sliding grooves 6 are fixedly connected with a spring B2017. One end of the spring B2017 near the middle of the sliding groove 6 is fixedly connected with a sliding column 2014. The sliding column 2014 is connected to the sliding groove. 6. The inner wall is in a nested relationship, and the front of the sliding column 2014 is fixedly connected with a plug board 2015, and the plug board 2015 is a triangular prism, because the steel cables are all twisted with multi-strand steel ropes, and the outer wall of the twisted steel ropes is a curved surface, which is in line with the steel After the sliding block 2012 corresponding to the position of the cable is extended, the inserting plate 2015 will contact the steel rope in the steel cable, and then the inserting plate 2015 will drive the sliding column 2014 to rotate and move along the curved surface of the steel rope with the thrust, so that the inserting plate 2015 will rotate and move along the curved surface of the steel rope. 2015 is inserted into the depression of the multi-strand steel rope, so that the steel rope is completely stuck. Through the setting of the plug board 2015, after the slider 2012 corresponding to the steel rope is extended, the plug board 2015 will follow the twisted steel rope. The position and angle can be changed by the lines until the inserting plate 2015 is inserted into the twisted steel rope gap, so as to realize the complete clamping of the steel rope, greatly improve the stability of the clamping, and further improve the stability of the connection between the elevator and the steel rope.

Airbags 2016 are fixedly connected to both sides of the insert plate 2015. The airbags 2016 are communicated with the inside of the jaws 204 through connecting pipes. After the slider 2012 is fully extended to the limit, the hydraulic oil injected into the jaws 204 will be injected into the airbags 2016. The airbag 2016 is inflated. Through the setting of the airbag 2016, after the claws 204 and the inserting plate 2015 clamp the wire rope, the airbag 2016 corresponding to the wire rope will penetrate into the lines twisted by the wire rope through deformation, and cooperate and insert The plate 2015 further increases the stability of the connection, and the air bag 2016 that does not correspond to the wire rope increases the degree of sealing after expansion, thereby increasing the effect of limiting the wire rope. The air bag 2016 also has the advantage of ensuring that the wire rope will not collapse. 2016 When clamping the steel rope with the risk of breaking, the steel rope can be squeezed so that the position of the steel rope will not be shifted when it is stressed, so as to avoid the problem of breakage and ensure that the maintenance personnel will not produce steel when overhauling the elevator. The problem of cable breakage is eliminated, and it is convenient for maintenance personnel to replace the steel cable corresponding to the risk of breakage.

The top surface of the cushion 103 is provided with a hole, and the bolt A105 is fixedly connected in the hole through the rotating bearing. The top surface of the base 101 is provided with a threaded hole corresponding to the position of the bolt A105 and is threadedly connected with the bolt A105. Through the setting of the bolt A105, the maintenance personnel can By turning the bolt A105, the expansion and contraction range of the soft pad 103 is controlled, so as to control the activation of the device and the extrusion amount of the hydraulic oil, and improve the applicability and flexibility of the device.

The maintenance mechanism 3 includes a limit plate 301, the limit plate 301 is in a C-shaped body and has rectangular grooves at equal intervals on the side surface. The top surface and the bottom surface of the limit plate 301 are fixedly connected with a fixed plate 302, and the side of the fixed plate 302 is provided with threads. The hole is threadedly connected with the bolt B303, the side of the claw 204 is provided with a threaded hole corresponding to the position of the bolt B303 and is threadedly connected with the bolt B303, and the side of the claw 204 corresponds to the position of the limit plate 301. The limit plate 301 corresponds to the side of the limit plate 2013 corresponding to the slider 2012, the front of the jaw 204 is fixedly connected and communicated with a cylinder B304, the interior of the cylinder B304 is hollow, the cylinder B304 is fixedly connected and communicated with the trachea B209, The top surface of the cylinder B304 is fixedly connected and communicated with the cylinder C305. The top of the cylinder C305 is provided with a hole and a sliding rod 306 is sleeved in the hole. A sensor 307 is fixedly installed on the front of the claw 204 above the sliding rod 306, and the sensor 307 adopts a magnet The material and the cylinder B304 are attracted to each other. First, turn the bolt B303 to insert the limit plate 301 into the claw 204. The limit plate 301 and the limit plate 2013 fit together to limit the extension of the slider 2012. Then tighten the bolt B303 to The hydraulic oil in the cushion 103 is injected into the jaws 204, and then injected into the airbag 2016 through the jaws 204. After the airbags 2016 are inflated, they are attached to each other and closely fit with the wire rope. After the airbag 2016 is filled with hydraulic oil, continue Twist until the slide bar 306 extends and is detected by the sensor 307, stop twisting, and then start the operation of the elevator. When the elevator is running, the wire rope shuttles in the jaw 204. , the sliding rod 306 retracts and injects hydraulic oil into the airbag 2016 at the corresponding position, so that the airbag 2016 continues to expand to fill the crack of the wire rope, and as the sliding rod 306 descends, the sensor 307 loses the detection of the sliding rod 306 And send a signal to realize the function of automatic detection of the integrity of the wire rope. Through the setting of the maintenance mechanism 3, it cooperates with the support mechanism 1 and the protection mechanism 2. After a simple operation, the function of the device can be controlled by the maintenance workers on the guard elevator. , switch to detect the integrity of the wire rope, which has the advantages of not taking up too much space, which greatly improves the practicability of the device.

When in use, S1, when the maintenance worker reaches the top of the elevator, he will first step on the pedal 102, and then the pedal 102 will transmit the pressure to the soft pad 103, the soft pad 103 will be squeezed and deformed, and the hydraulic oil inside it will be pressed and deformed. It is injected into the cylinder A205 through the air pipe A208. The hydraulic oil injected into the cylinder A205 pushes the piston 206 to slide upward. When the piston 206 slides, it slides through the pull rod 207, thereby expanding the distance between the top of the connecting rod A202 and the connecting rod B203, so that the connecting rod B203 After the connecting rod B203 rotates, the claw 204 is engaged with the wire rope, thereby connecting the elevator with the wire rope. When the maintenance worker disengages the pedal 102, the spring A104 rebounds and drives the soft pad 103 to reset, thereby restoring the cylinder The hydraulic oil in A205 is drawn back into the cushion 103, and the piston 206 is pulled by negative pressure, thereby driving the jaw 204 to break away from the wire rope and driving the connecting rod B203 to reset.

S2, after the jaws 204 are in contact with the wire rope, the hydraulic oil extruded from the cushion 103 will be injected into the jaws 204 through the air pipe B209, and then the hydraulic oil pushes the slider 2012 to the wire rope in the jaws 204. The slot 5 limits the extension distance of the slider 2012. After the slider 2012 corresponding to the steel cable is fitted with the steel cable, the pressure of the hydraulic oil tightly clamps the steel cable, and the slider 2012 corresponding to the steel cable tightly clamps the steel cable. The slider 2012 will fit with the slider 2012 at the corresponding position, so as to clamp and limit the side of the wire rope. When the cushion 103 rebounds and the hydraulic oil is withdrawn, the slider 2012 does not shrink back to the jaws 204, the claw 204 cannot move due to the restriction of the sliding block 2012 and the wire rope, so as to prevent the piston 206 from sliding in the cylinder A205 in advance. The returned hydraulic oil slides and resets with the claw 204 and the connecting rod B203.

S3, because the steel ropes are all twisted with multi-strand steel ropes, and the outer wall of the twisted steel ropes is curved. Then, with the pushing force, the inserting plate 2015 drives the sliding column 2014 to rotate and move along the curved surface of the steel rope, so that the inserting plate 2015 is inserted into the depression of the multi-strand steel rope, so as to completely clamp the steel rope.

S4 , after the slider 2012 is fully extended to the limit, the hydraulic oil injected into the jaws 204 will be injected into the airbag 2016 subsequently, so that the airbag 2016 will expand.

S5, firstly rotate the bolt B303 to insert the limit plate 301 into the claw 204, the limit plate 301 and the limit plate 2013 fit together, thereby restricting the extension of the slider 2012, and then tighten the bolt B303 to release the hydraulic pressure in the cushion 103 The oil is injected into the claw 204, and then injected into the air bag 2016 through the clamping claw 204. After the air bags 2016 are expanded, the air bags 2016 are attached to each other and closely fit with the wire rope. After the air bag 2016 is filled with hydraulic oil, continue to rotate until the slide bar 306 extends It is detected by the sensor 307, stops twisting, and then starts the operation of the elevator. When the elevator is running, the wire rope shuttles in the jaw 204. When the wire rope with the cracking problem is inserted into the jaw 204, the sliding rod 306 retracts and The hydraulic oil is injected into the air bag 2016 at the corresponding position, so that the air bag 2016 continues to expand to fill the crack of the wire rope, and as the slide bar 306 descends, the sensor 307 loses the detection of the slide bar 306 and sends a signal, thereby realizing automation A function to check the integrity of the wire rope.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

A safety protection device for elevator maintenance, comprising a support mechanism (1), a protection mechanism (2) and an overhaul mechanism (3), the support mechanism (1) includes a base (101), and a soft pad is fixedly connected to the top surface of the base (101). (103), a pedal (102) is fixedly connected to the top surface of the soft pad (103), a hole is opened on the top surface of the soft pad (103), and a bolt A (105) is fixedly connected in the hole through a rotating bearing, and the base (101) There are threaded holes on the top surface corresponding to the positions of the bolts A (105) and are threadedly connected with the bolts A (105). The number of mechanisms (3) is two, and they are respectively arranged on the two protection mechanisms (2), characterized in that: the protection mechanism (2) comprises a connecting seat (201), and the connecting seat (201) is fixedly connected to the soft pad (103) On the top surface, the upper and lower inner walls of the cushion (103) are fixedly connected with a spring A (104), the interior of the cushion (103) is filled with hydraulic oil, and the end of the connecting seat (201) close to the outer side of the cushion (103) is fixed A connecting rod A (202) is connected, the front end of the connecting rod A (202) away from the connecting seat (201) is provided with a hole and a connecting rod B (203) is sleeved in the hole, and the connecting rod B (203) is far away from the connecting rod A One end of (202) is fixedly connected with a clamping claw (204), the clamping claw (204) has a C-shaped body and the concave surfaces of the two clamping claws (204) are away from each other, and the inner walls of the upper and lower ends of the front and rear of the clamping claw (204) are both Fixed connection with clip pads (2010).
A safety protection device for elevator maintenance according to claim 1, characterized in that: the top surface of the connecting rod A (202) is fixedly connected with a cylinder A (205) through a rotating shaft hinge, and the cylinder A (205) The side close to the connecting rod B (203) is in a hollowed-out state and the inner wall is sleeved with a piston (206). One end of the 206) is fixedly connected to the connecting rod B (203) through the hinge of the rotating shaft, and the bottom surface of the piston (206) is communicated with the soft pad (103) through the trachea A (208).
The safety protection device for elevator maintenance according to claim 2, characterized in that: the interiors of the front and rear sides of the jaws (204) are in a hollowed state, and the corresponding surfaces of the front and rear sides of the jaws (204) are opened at equal intervals There are several slots (4), a slot (5) is formed inside the claw (204) at a position corresponding to the slot (4), and a slider (2012) is inserted into the slot (4), and the slider (2012) One side inside the clamping claw (204) is fixedly connected to the limiting plate (2013), and one end of the limiting plate (2013) located inside the clamping claw (204) is fixedly connected with an elastic expansion member (2011), and the elastic expansion member (2011) is away from One end of the slider (2012) is fixedly connected to the inner wall of the claw (204), and the middle of the cylinder A (205) communicates with the inside of the front and rear sides of the claw (204) through the trachea B (209).
The safety protection device for elevator maintenance according to claim 3, characterized in that: corresponding surfaces at the front and rear of the plurality of sliding blocks (2012) are provided with chute (6), and the inner walls on both sides of the chute (6) are A spring B (2017) is fixedly connected, and one end of the spring B (2017) close to the middle of the chute (6) is fixedly connected with a sliding column (2014), and the sliding column (2014) is in a nesting relationship with the inner wall of the sliding channel (6), and the sliding The front side of the column (2014) is fixedly connected with an insert plate (2015), and the insert plate (2015) is in the shape of a triangular prism.
The safety protection device for elevator maintenance according to claim 4, characterized in that: both sides of the insert plate (2015) are fixedly connected with airbags (2016), and the airbags (2016) are connected to the claws (204) through a connecting pipe ) is internally connected.
The safety protection device for elevator maintenance according to claim 5, characterized in that: the inspection mechanism (3) comprises a limit plate (301), and the limit plate (301) is in the shape of a C shape and the sides are equally spaced A rectangular slot is provided, the top surface and the bottom surface of the limit plate (301) are fixedly connected with a fixing plate (302), the side of the fixing plate (302) is provided with a threaded hole and is threadedly connected with a bolt B (303), a clamping claw (204) A threaded hole is formed on the side corresponding to the position of the bolt B (303) and is threadedly connected with the bolt B (303). The limit plate (301) corresponds to the side of the limit plate (2013) corresponding to the slider (2012).
The safety protection device for elevator maintenance according to claim 6, characterized in that: the front side of the clamping claw (204) is fixedly connected and communicated with a cylinder B (304), and the interior of the cylinder B (304) is hollow, The cylinder B (304) is fixedly connected and communicated with the trachea B (209), the top surface of the cylinder B (304) is fixedly connected and communicated with the cylinder C (305), and the top of the cylinder C (305) is provided with a hole and the inside of the hole is A sliding rod (306) is sleeved, and a sensor (307) is fixedly installed above the sliding rod (306) on the front of the claw (204). The sensor (307) is made of magnet material and attracts the cylinder B (304).