Elevator shaft opening and closing structure

Abstract

The utility model discloses an elevator shaft opening and closing structure, and relates to the field of limit switches, the elevator shaft opening and closing structure comprises an elevator car body, a module A is arranged at the top of the elevator car body, and a module B consistent with the module A in structure is arranged at the bottom of the elevator car body; the module A comprises a speed limiting beam fixedly arranged on the upper end face of an elevator car, fixing bases are fixedly arranged on the positions, located on the two sides of the speed limiting beam, of the upper end face of the elevator car, first connecting plates are arranged in the two fixing bases, and stress bases are connected to the tops of the two first connecting plates. Lower transverse grooves are formed in the positions, located on the two first connecting plates, of the upper end face of the stress base, third connecting plates are connected into the two lower transverse grooves, pressure plates are connected to the tops of the two third connecting plates, upper longitudinal grooves are formed in the two sides of the lower end face of each pressure plate, second connecting plates are rotationally arranged in the upper longitudinal grooves, and stretching bases are connected to the bottom ends of the second connecting plates. Physical control is matched with electric signals, the elevator speed is stably controlled, and potential safety hazards are effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of limit switches, and in particular to an elevator shaft switch structure. Background Art

[0002] The elevator shaft limit switch is mainly used for the control and signal prompt of the elevator car reaching the position during the operation of the elevator, and sends the detected signal to the elevator operation controller. The elevator operation controller determines the running status of the car and controls the speed according to the signal provided by the limit control switch, thereby ensuring that the car is buffered before changing the running direction when it runs to the bottom pit of the shaft or reaches the top of the shaft, so that the elevator car will not be in danger of squatting at the bottom or hitting the top due to excessive running speed. The existing shaft switch structure usually uses electrical signals to transmit information, but the electrical signals in the shaft are prone to delays and cannot stably control the elevator speed.

[0003] For example, patent number CN200520069144.9, elevator shaft switch, including housing, external terminal seat, torsion rod, torsion wheel, torsion shaft, static contact piece, moving contact piece, one end of the torsion rod is connected to the torsion shaft, the other end is connected to the torsion wheel shaft, the torsion wheel is placed on the torsion wheel shaft, the torsion shaft is provided with a torsion spring fixing seat, the torsion spring fixing seat is built with a torsion spring and is sleeved on the torsion shaft, the difference is that a limited position bolt is provided on one side of the torsion rod on the housing. The above device has the following deficiencies in actual use:

[0004] The device uses a twisting wheel to abut against the touch plate in the hoistway to generate a spring torque. The spring drives the two contact pieces to contact each other to transmit signals to control the operation of the elevator. However, when the elevator speed is too fast, the delay generated by the electrical signal makes it impossible to control and reduce the elevator speed in time, and the buffering effect cannot be effectively achieved, posing a safety hazard. Utility Model Content

[0005] In order to improve the problem that the existing shaft switch cannot reduce the elevator speed in time using electrical signals, thus posing a safety hazard, the present application provides an elevator shaft switch structure.

[0006] The present application provides an elevator shaft switch structure adopting the following technical solution:

[0007] An elevator shaft switch structure comprises an elevator car body, wherein an A module is arranged on the top of the elevator car body, and a B module having the same structure as the A module is arranged on the bottom of the elevator car body;

[0008] The A module comprises a speed limiting beam fixedly mounted on the upper end surface of the elevator car body, the upper end surface of the elevator car body is located on both sides of the speed limiting beam and fixed with fixing seats, the two fixing seats are each provided with a first connecting plate, and the tops of the two first connecting plates are connected with a force bearing seat;

[0009] The upper end surface of the force-bearing seat is provided with a lower transverse groove at the two first connecting plates, the two lower transverse grooves are connected to the third connecting plates, the tops of the two third connecting plates are connected to pressure plates, upper longitudinal grooves are provided on both sides of the lower end surface of the pressure plate, the second connecting plate is rotatably arranged in the upper longitudinal groove, and the bottom end of the second connecting plate is connected to an extension seat.

[0010] By adopting the above technical solution, the pressure plate drives the third connecting plate to rotate under pressure, and then drives the force-bearing seat to press down synchronously, so as to buffer the impact force caused by the excessively fast contact of the elevator. At the same time, the downward pressure of the pressure plate performs a physical emergency stop on the movement of the elevator, and when sending an electrical signal, the elevator operating system controls the elevator speed, thereby stably controlling the elevator movement speed.

[0011] Preferably, friction wheels are rotatably provided on both sides of the speed limiting beam, a lower through groove is opened in the middle of the speed limiting beam, and fixing plates are fixedly provided in pairs on both sides of the speed limiting beam, and the bottom of the fixing plate is fixedly connected to the upper end surface of the elevator car body.

[0012] By adopting the above technical solution, the friction wheel abuts against the subsequent guide rail to limit the lifting and lowering of the elevator car body and control the lifting and lowering speed of the elevator car body at the same time.

[0013] Preferably, a rotating rod is movably provided in each of the two lower transverse grooves, and the two rotating rods are rotatably connected to the two third connecting plates one by one respectively.

[0014] By adopting the above technical solution, the rotating rod connects the third connecting plate and the first connecting plate, and moves along the groove of the lower transverse groove, serving as a pivot for the pressure plate and the force bearing seat to be pressed down synchronously.

[0015] Preferably, lower longitudinal grooves are provided on both sides of the upper end surface of the force-bearing seat at the lower transverse groove, a central through groove is provided in the middle of the upper end surface of the force-bearing seat, and a plurality of springs are fixedly provided on the upper end surface of the force-bearing seat around the central through groove.

[0016] By adopting the above technical solution, the middle through groove reserves space for the subsequent installation of the car top cable, and at the same time, the spring connects the force bearing seat and the pressure plate, which improves the buffer when the pressure plate is subjected to force.

[0017] Preferably, upper transverse grooves are provided on both sides of the upper end surface of the pressure plate relative to the upper longitudinal grooves, and the tops of the two third connecting plates are rotatably connected to the inner walls of the two upper transverse grooves one by one.

[0018] By adopting the above technical solution, the upper transverse groove reserves space for the rotation of the third connecting plate, and the rotating shaft in the upper transverse groove limits the third connecting plate, so that the third connecting plate can rotate longitudinally around the rotating shaft.

[0019] Preferably, an upper through groove is provided in the middle of the upper end surface of the pressure plate, and rotating seats are fixedly provided on both sides of the outer surface of the pressure plate close to the extension seat, and clamping blocks are rotatably connected in the two rotating seats.

[0020] By adopting the above technical solution, the upper through groove reserves space for the subsequent installation of the car top cable, and the rotating seat fixes the clamping block longitudinally on the pressure plate.

[0021] Preferably, folding blocks are fixedly provided on opposite sides of the two extension seats, and the two folding blocks are respectively fixedly connected to the two clamping blocks one by one.

[0022] By adopting the above technical solution, the folding block has stretchability, so that the clamping block is softly connected to the extension seat, preventing the clamping block from being unable to rotate completely due to the limitation of the extension seat when rotating.

[0023] Preferably, guide rails abutting against the friction wheels are fixedly provided on both sides of the elevator car body, a junction box is fixedly provided in the middle of the upper end surface of the elevator car body, and a car top cable is fixedly connected to the top of the junction box.

[0024] By adopting the above technical solution, the junction box connects the circuit with the elevator operating system, thereby receiving the alarm signal transmitted by the card connection block.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The pressure plate is used to contact the top or bottom of the well to generate pressure, so that when pressing down, the clamping block stretches and clamps between the guide rail and the friction wheel to form a fixation. At the same time, the clamping block is squeezed to send an alarm signal, so that the elevator system completes the emergency stop operation. The physical force and electrical signal cooperate to stably control the elevator speed and reduce safety hazards;

[0027] 2. When the pressure plate is pressed in, the pressure is transmitted downward, and the force-bearing seat is pressed down synchronously through the first connecting plate and the third connecting plate. A spring is arranged between the pressure plate and the force-bearing seat to improve the buffer. When the pressure plate and the force-bearing seat are pressed down synchronously, the impact force generated when the elevator speed is too fast is effectively reduced, and the fault tolerance performance of the elevator when safety hazards occur is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional schematic diagram of this application;

[0029] Figure 2 This is a three-dimensional exploded view of this application;

[0030] Figure 3 This is the front view of this application;

[0031] Figure 4 This is the exploded diagram of the speed limit beam connection for this application;

[0032] Figure 5 This is a side sectional exploded view of the pressure seat of this application.

[0033] Reference numerals: 1, elevator car body; 11, A module; 12, B module;

[0034] 2. Speed ​​limiting beam; 21. Friction wheel; 22. Lower through groove; 23. Fixed plate;

[0035] 3. Force bearing seat; 31. Lower transverse groove; 32. Lower longitudinal groove; 33. Rotating rod; 34. First connecting plate; 35. Fixed seat; 36. Middle through groove; 37. Spring;

[0036] 4. Pressure plate; 41. Upper transverse groove; 42. Upper longitudinal groove; 43. Rotating seat; 44. Clamping block; 45. Second connecting plate; 46. Extension seat; 47. Folding block; 48. Third connecting plate; 49. Upper through groove;

[0037] 5. Guide rail; 6. Car roof cable; 7. Junction box. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] An embodiment of the present application discloses an elevator shaft switch structure.

[0040] Example 1

[0041] Reference Figure 3 An elevator shaft switch structure includes an elevator car body 1, an A module 11 is arranged on the upper end surface of the elevator car body 1, and a B module 12 is arranged on the bottom surface of the elevator car body 1 away from the A module 11, and the B module 12 has the same structure as the A module 11 but in the opposite direction.

[0042] Reference Figure 1 , 4 , the A module 11 includes a speed limiting beam 2 fixedly mounted on the upper end surface of the elevator car body 1 (a space of 5 to 6 cm is reserved between the bottom surface of the speed limiting beam 2 and the elevator car body 1), the speed limiting beam 2 is H-shaped as a whole, and rotating rods are rotatably arranged in the H-shaped grooves on both sides of the speed limiting beam 2, and friction wheels 21 are welded and fixed on the surfaces of the two rotating rods, and a lower through groove 22 is provided in the middle of the upper end surface of the speed limiting beam 2 between the two friction wheels 21, and the lower through groove 22 passes through the bottom of the speed limiting beam 2 and is connected with the upper end surface of the elevator car body 1, and a fixing plate 23 is fixedly mounted on the outer surface of the speed limiting beam 2 at both sides of the friction wheel 21, and the fixing plate 23 is L-shaped, and the bottom of the fixing plate 23 is fixedly connected to the upper end surface of the elevator car body 1 by screws.

[0043] Through the above arrangement, the fixing plates 23 connected by screws on both sides of the speed limiting beam 2 are fixedly connected to the elevator car body 1, thereby fixing the speed limiting beam 2 to the elevator car body 1. The speed limiting beam 2 is located at the upper end of the elevator car body 1, and supports the subsequent downward pressing of the force-bearing seat 3 to prevent the force-bearing seat 3 from directly contacting the elevator car body 1. At the same time, the two friction wheels 21 are respectively abutted against the guide rails 5 to limit and guide the movement of the elevator car body 1 to control the moving speed of the elevator car body 1.

[0044] Reference Figure 2 , 4 The upper end surface of the elevator car body 1 is located on both sides of the speed limiting beam 2 and is fixed with a fixed seat 35 by screws. The grooves in the middle of the two fixed seats 35 are rotatably connected with a rotating shaft, and the surfaces of the two rotating shafts are welded and fixed with a first connecting plate 34. The ends of the two first connecting plates 34 away from the fixed seat 35 are fixedly connected to a rotating rod 33, and the top of the rotating rod 33 is movably connected with a force-bearing seat 3. The upper end surface of the force-bearing seat 3 is located at the position of the two rotating rods 33 and is provided with a lower transverse groove 31. Grooves for sliding are provided on both sides of the groove of the lower transverse groove 31, and the inner wall of the groove abuts against the two ends of the rotating rod 33. The upper end surface of the force-bearing seat 3 is located on both sides of the two lower transverse grooves 31 and is provided with a lower longitudinal groove 32. The upper end surface of the force-bearing seat 3 is located between the two lower longitudinal grooves 32 and is provided with a middle through groove 36. A plurality of springs 37 (the number of springs 37 is at least four) are fixed around the middle through groove 36 on the upper end surface of the force-bearing seat 3. A damper may also be provided in the middle of the spring 37 to improve the buffering effect of the elevator car body 1. At the same time, both ends of the damper are fixed to the pressure plate 4 and the force bearing seat 3 respectively.

[0045] Through the above arrangement, when the force-bearing seat 3 is subjected to downward pressure, pressure is applied to the rotating rod 33, and at the same time, the rotating rod 33 is laterally limited by the lower transverse groove 31, so that the two rotating rods 33 slide toward each other along the groove of the lower transverse groove 31, and the two rotating rods 33 slide to drive the tops of the two first connecting plates 34 to move toward each other, and the two first connecting plates 34 rotate toward each other with the fixed seat 35 as the center and the tops thereof, thereby driving the force-bearing seat 3 to move horizontally downward until it abuts against the upper end surface of the speed limiting beam 2.

[0046] Reference Figure 2 , 5The surfaces of the two rotating rods 33 located outside the first connecting plate 34 are rotatably connected to the third connecting plate 48, and the ends of the two third connecting plates 48 away from the rotating rods 33 are rotatably connected to the pressure plate 4. The upper end surface of the pressure plate 4 is located at the position of the two third connecting plates 48 and is provided with an upper transverse groove 41. Rotating rods are fixed in the two upper transverse grooves 41, and the surfaces of the two rotating rods are rotatably connected to the tops of the two third connecting plates 48. The lower end surface of the pressure plate 4 is located on both sides of the upper transverse groove 41 and is provided with upper longitudinal grooves 42. Rotating rods are fixed in the two upper longitudinal grooves 42, and the surfaces of the two rotating rods are rotatably connected to the second connecting plates 45. The ends of the two second connecting plates 45 away from the upper longitudinal grooves 42 are rotatably provided with extension seats 46, and sliders are provided on both sides of the extension seat 46, and the surfaces of the sliders are movably abutted against the grooves in the lower longitudinal grooves 32.

[0047] Through the above arrangement, when the pressure plate 4 is pressed inward by the external pressure, the third connecting plate 48 is driven to be pressed downward synchronously, and the bottom of the third connecting plate 48 is rotationally connected to the rotating rod 33, thereby transmitting the pressure to the force-bearing seat 3. At the same time, the third connecting plate 48 is subjected to pressure, which will generate a small thrust on the rotating rod 33, thereby assisting the movement of the rotating rod 33.

[0048] Reference Figure 2 , 5 An upper through slot 49 is provided in the middle of the pressure plate 4, and a folding block 47 is welded and fixed to one side of the two extension seats 46 away from the upper through slot 49. Rotating seats 43 are fixed on both sides of the outer surface of the pressure plate 4 close to the folding block 47. The rotating shaft surfaces of the two rotating seats 43 are rotatably connected to the top of the clamping block 44 (the outer surface of the clamping block 44 is provided with rubber to increase friction), and the bottom of the opposite side of the two clamping blocks 44 is fixedly connected to the outer ends of the two folding blocks 47 one by one.

[0049] It should be noted that a pressure sensor is installed inside the clamping block 44 , and when the clamping block 44 is inserted into the guide rail 5 for emergency fixation, a signal is sent to the alarm system.

[0050] Through the above arrangement, when the pressure plate 4 is pressed downward, pressure is applied to the top of the second connecting plate 45, and at the same time, the bottom of the second connecting plate 45 is rotationally connected to the extension seat 46, thereby converting the pressure into thrust and applying it to the extension seat 46. The extension seat 46 is thrust and slides outward along the lower longitudinal groove 32, thereby causing the folding block 47 to slide out synchronously. The folding block 47 pushes the bottom of the clamping block 44 to extend outward, and the top of the clamping block 44 is fixed by the rotating seat 43, thereby rotating. When the tip of the bottom of the clamping block 44 rotates to the upper end of the friction wheel 21, as the pressure plate 4 descends, the tip of the clamping block 44 is inserted into the abutment gap between the friction wheel 21 and the guide rail 5, thereby forming a clamping fixation.

[0051] Reference Figure 1 , 24. Two guide rails 5 are fixedly provided in the elevator shaft, and the guide surfaces of the two guide rails 5 are respectively in contact with the roller surfaces of the two friction wheels 21. A junction box 7 is fixedly provided on the upper end surface of the elevator car body 1 in the lower through groove 22 by screws (the interface end of the junction box 7 is connected to electrical components such as the control surface, lighting system or alarm system in the elevator car), and a car top cable 6 is fixedly connected to the interface end on the top of the junction box 7.

[0052] Through the above arrangement, the guide rail 5 abuts against the surface of the friction wheel 21 to guide and limit the movement of the elevator car 1. At the same time, the junction box 7 connects the circuit to the elevator system, which is convenient for receiving the alarm signal sent by the pressure sensor or the operation signal of the person using the elevator.

[0053] Among them, the device also includes a pressure sensor, a guide rail 5, a car top cable 6 and a junction box 7, which are all existing technologies, and their structural principles are not described in detail.

[0054] The implementation principle of an elevator shaft switch structure in an embodiment of the present application is as follows: when an elevator operation failure causes the car body to touch the bottom or the top in the shaft, the pressure plate 4 is pressed inward by the pressure of external squeezing, thereby driving the third connecting plate 48 to be pressed downward. While the third connecting plate 48 transmits the pressure to the force-bearing seat 3, it assists in pushing the rotating rod 33 to move along the lower transverse groove 31. When the force-bearing seat 3 is pressed downward by pressure, the rotating rod 33 is simultaneously subjected to pressure and is limited by the lower transverse groove 31, thereby performing a lateral translation, thereby driving the two, the first connecting plate 34 to rotate toward each other with the fixed seat 35 as the center, so that the pressure plate 4 and the force-bearing seat 3 are pressed downward synchronously.

[0055] The pressure plate 4 is pressed downward to apply pressure to the second connecting plate 45, causing the second connecting plate 45 to rotate around the top of the extension seat 46, thereby converting the rotational force into thrust, pushing the extension seat 46 to move longitudinally along the lower longitudinal groove 32, and the extension seat 46 pushes the folding block 47 to move outward, thereby pushing the bottom of the clamping block 44 to move outward, and the top of the clamping block 44 is fixed by the rotating seat 43, so that the clamping block 44 rotates around the rotating seat 43. With the rotation of the clamping block 44 and the downward pressure of the pressure plate 4, the clamping block 44 is clamped between the guide rail 5 and the friction wheel 21, forming an emergency fixation, so that the elevator car 1 stops moving, and at the same time, the pressure sensor in the clamping block 44 is subjected to pressure, thereby transmitting an alarm signal to the elevator system, causing the elevator system to stop running and take corresponding reverse movement measures to restore the elevator.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An elevator shaft switch structure, characterized in that: It comprises an elevator car body (1), wherein an A module (11) is arranged on the top of the elevator car body (1), and a B module (12) having the same structure as the A module (11) is arranged on the bottom of the elevator car body (1); The A module (11) comprises a speed limiting beam (2) fixedly mounted on the upper end surface of the elevator car body (1), the upper end surface of the elevator car body (1) being located on both sides of the speed limiting beam (2) and fixedly mounted with fixing seats (35), first connecting plates (34) being arranged in the two fixing seats (35), and force bearing seats (3) being connected to the tops of the two first connecting plates (34); The upper end surface of the force-bearing seat (3) is provided with a lower transverse groove (31) at the two first connecting plates (34), and the two lower transverse grooves (31) are connected to the third connecting plates (48). The tops of the two third connecting plates (48) are connected to the pressure plates (4). The lower end surfaces of the pressure plates (4) are provided with upper longitudinal grooves (42) on both sides, and the second connecting plates (45) are rotatably arranged in the upper longitudinal grooves (42). The bottom end of the second connecting plate (45) is connected to the extension seat (46).

2. An elevator shaft switch structure according to claim 1, characterized in that: Friction wheels (21) are rotatably arranged on both sides of the speed limiting beam (2), a lower through groove (22) is opened in the middle of the speed limiting beam (2), and fixing plates (23) are fixedly arranged in pairs on both sides of the speed limiting beam (2), and the bottom of the fixing plate (23) is fixedly connected to the upper end surface of the elevator car body (1).

3. An elevator shaft switch structure according to claim 1, characterized in that: A rotating rod (33) is movably arranged in each of the two lower transverse grooves (31), and the two rotating rods (33) are respectively rotatably connected to the two third connecting plates (48) one by one.

4. The elevator shaft switch structure according to claim 1, characterized in that: The upper end surface of the force-bearing seat (3) is provided with lower longitudinal grooves (32) on both sides of the lower transverse groove (31), a central through groove (36) is provided in the middle of the upper end surface of the force-bearing seat (3), and a plurality of springs (37) are fixedly arranged around the central through groove (36) on the upper end surface of the force-bearing seat (3).

5. The elevator shaft switch structure according to claim 1, characterized in that: The upper end surface of the pressure plate (4) is provided with upper transverse grooves (41) on both sides relative to the upper longitudinal groove (42), and the tops of the two third connecting plates (48) are rotatably connected to the inner walls of the two upper transverse grooves (41) respectively.

6. The elevator shaft switch structure according to claim 1, characterized in that: An upper through groove (49) is provided in the middle of the upper end surface of the pressure plate (4), and rotating seats (43) are fixedly provided on both sides of the outer surface of the pressure plate (4) close to the extension seat (46), and the two rotating seats (43) are rotatably connected with a clamping block (44).

7. An elevator shaft switch structure according to claim 6, characterized in that: A folding block (47) is fixedly provided on the opposite side of the two extension seats (46), and the two folding blocks (47) are respectively fixedly connected to the two clamping blocks (44) one by one.

8. The elevator shaft switch structure according to claim 1, characterized in that: Guide rails (5) abutting against friction wheels (21) are fixedly provided on both sides of the elevator car body (1), a junction box (7) is fixedly provided in the middle of the upper end surface of the elevator car body (1), and a car top cable (6) is fixedly connected to the top of the junction box (7).

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