Safety tongs for villa elevator

Abstract

A pair of safety tongs for a villa elevator comprises two sets of oppositely-arranged fixing bases, braking mechanisms arranged in the fixing bases and a linkage rod connected between the two sets of fixing bases, the safety tongs are fixed to the edges of the two sides of the top of an elevator car respectively, and the safety tongs are matched with guide rails on the two sides of the elevator car; in this way, a user can stand at the top of the lift car for operation during disassembly, assembly and maintenance, the situation that the user needs to stand at the bottom of the lift car for head raising operation is avoided, meanwhile, the occupied space of the bottom of the lift car can be reduced, the depth of an elevator shaft is reduced, and the situation that underground water seeps from the bottom of the elevator shaft to affect use of an elevator is avoided; the brake seat and the brake blocks are arranged on the two sides of the stroke opening in the fixed seat, the brake blocks on the two sides draw close to each other through the action of the first guide face and the second guide face when moving upwards, so that the guide rail is clamped to generate braking force, and the braking force generated when the brake blocks move upwards in the braking process is larger; the braking mode can effectively improve the braking effect of the elevator, so that the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety clamps, in particular to a safety clamp used for villa elevators. Background Art

[0002] With the improvement of people's quality of life, villa elevators are more and more widely used in high-end residences, especially in single-family villas, and have been highly recognized by users. However, in actual applications, for safety reasons, it is necessary to install a safety clamp on the car to slow down when the car falls quickly, thereby improving the safety of the elevator.

[0003] For example, the integrated home elevator car bottom safety clamp device disclosed in the Chinese patent application CN202221145281.6 includes a bottom beam and guide shoes fixed on both sides of the bottom beam, and guide rails slide vertically in the guide shoes; guide rail blocks are fixedly arranged on both sides of the bottom beam, the guide rail blocks are located at the upper ends of the guide shoes, and guide rail grooves are opened on the guide rail blocks, and the guide rails slide in the guide rail grooves. In this structure, two locking members are locked on two guide rails at the same time, so that the elevator can be stably stopped on the guide rails, thereby improving the safety of the elevator.

[0004] However, since this type of safety clamp structure needs to be fixed at the bottom of the elevator, workers need to look up during installation and maintenance, which not only increases the difficulty of the operation but also poses certain safety hazards. At the same time, in order to allow the elevator shaft to have enough space to accommodate the components at the bottom of the car, the depth of the elevator shaft needs to be increased. Once the elevator shaft is too deep, groundwater is likely to seep in, causing water to seep into the car and affecting normal use. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a safety clamp for a villa elevator.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A safety clamp for a villa elevator comprises two groups of relatively arranged fixed seats, a brake mechanism arranged in the fixed seats and a linkage rod connected between the two groups of fixed seats, the brake mechanisms in the two groups of fixed seats are synchronously actuated by the linkage rod, the two groups of fixed seats are respectively fixed at the edges on both sides of the top of the car, the fixed seats are provided with a travel opening for accommodating a guide rail, the travel opening extends in a vertical direction, the guide rail is slidably fitted in the travel opening, the brake mechanism comprises a brake seat and a brake block symmetrically arranged on both sides of the travel opening, the brake seat is fixedly connected to the fixed seat, the brake block is movably connected to the brake seat, a first guide surface and a guide groove are provided on one side of the brake seat close to the travel opening, the guide groove extends in the slope direction of the first guide surface, the first guide surface gradually approaches the travel opening from bottom to top, a second guide surface is provided on the side of the brake block away from the travel opening, the second guide surface is slidably fitted with the first guide surface, a guide convex strip for fitting in the guide groove is also extended on the second guide surface, and the brake blocks on both sides of the travel opening are driven to approach each other by the first guide surface and the second guide surface when moving upward to clamp the guide rail.

[0008] Furthermore, a braking surface for increasing the friction force between the brake block and the guide rail is provided on one side of the brake block close to the travel opening, and the braking surface is provided with rough texture.

[0009] In the utility model, the safety clamp also includes a driving assembly for driving the brake block to move upward, the driving assembly includes an active rod with one end hinged to the outside of the fixed seat and a driven rod with one end hinged to the inside of the fixed seat, the linkage rod is connected between the active rods on both sides, the other end of the driven rod is hinged under the brake block to lift the brake block, the driving assembly also includes a driving arm for driving the active rod on one side to rotate, and the driving arm is connected to the speed limiter through a pull rope.

[0010] Furthermore, a moving distance L is provided between the lower part of the brake block and the hinged part of the driven rod, which is sufficient for the brake block to slide to both sides.

[0011] Furthermore, the moving spacing L is greater than or equal to the distance that the brake block deviates to both sides when moving up and down along the brake seat.

[0012] In the utility model, the active rods on both sides are arranged opposite to each other, the active rod on the side close to the driving arm faces downward, and the active rod on the side away from the driving arm faces upward.

[0013] In the utility model, a reset mechanism is also provided on the fixed seat on one side, and the reset mechanism includes a reset baffle and a reset spring. One end of the reset baffle is fixedly connected to the fixed seat, and the other end extends toward the direction of the linkage rod and is bent at the end to form a limiting structure. The linkage rod passes through the limiting structure, one end of the reset spring is fixedly connected to one end of the linkage rod close to the limiting plate, and the other end of the reset spring is against the limiting structure.

[0014] In this embodiment, the driving arm and the active rod are detachably connected via a limit pin.

[0015] The utility model has the following advantages and beneficial effects:

[0016] 1. Fix the safety clamps on the edges of both sides of the car top through the fixing seats. The safety clamps cooperate with the guide rails on both sides of the car. In this way, you can stand on the top of the car to work during disassembly, assembly and maintenance, avoiding the need to stand at the bottom of the car and look up to work. At the same time, it can also reduce the space occupied at the bottom of the car, thereby reducing the depth of the elevator shaft and avoiding the occurrence of underground water seeping from the bottom of the elevator shaft and affecting the use of the elevator.

[0017] 2. By arranging a brake seat and a brake block on both sides of the upper stroke port of the fixed seat, when the brake blocks on both sides move upward, they move closer to each other through the action of the first guide surface and the second guide surface, thereby clamping the guide rail to generate braking force, and during the braking process, the more the brake block moves upward, the greater the braking force generated. This braking method can effectively improve the braking effect of the elevator, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the installation of the safety gear in this embodiment;

[0020] Figure 2 Schematic diagram of the safety gear in this embodiment;

[0021] Figure 3 for Figure 2 A magnified image of area A;

[0022] Figure 4 It is a side view of the safety gear in this embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0024] like Figures 1 to 4 As shown, the present embodiment discloses a safety clamp for a villa elevator, comprising a car 1, guide rails 2 located on both sides of the car 1 and a safety clamp 3 installed on the top of the car 1, the safety clamp 3 cooperates with the guide rails 2 on both sides, the safety clamp 3 comprises two sets of relatively arranged fixed seats 30, a braking mechanism 31 arranged in the fixed seats 30 and a linkage rod 32 connected between the two sets of fixed seats 30, the braking mechanism 31 in the two sets of fixed seats 30 synchronously acts through the linkage rod 32, specifically, the two sets of fixed seats 30 are respectively fixed at the edges on both sides of the top of the car 1, the fixed seats 30 are provided with a travel opening 300 for accommodating part of the guide rails 2, the travel opening 300 extends in the vertical direction, the guide rails 2 are slidably fitted in the travel opening 300, the braking mechanism 31 comprises a brake seat 310 and a brake block 311 symmetrically arranged on both sides of the travel opening 300, the brake seat 310 is fixedly connected to the fixed seat 30, and the brake block 311 is movably connected to the brake seat 310, Specifically, a first guide surface 312 and a guide groove 313 are provided on the brake seat 310 on the side close to the stroke port 300, and the guide groove 313 extends along the slope direction of the first guide surface 312. The first guide surface 312 gradually approaches the stroke port 300 from bottom to top, and a second guide surface 314 is provided on the side of the brake block 311 away from the stroke port 300. The second guide surface 314 slidably cooperates with the first guide surface 312, and a guide ridge 315 for cooperating with sliding in the guide groove 313 is also extended on the second guide surface 314. A braking surface 316 for increasing the friction between the brake block 311 and the guide rail 2 is provided on the side close to the stroke port 300, and the braking surface 316 is provided with rough texture. When the brake block 311 moves upward, it is driven close to the stroke port 300 by the first guide surface 312 and the second guide surface 314, so that the two groups of brake calipers symmetrically arranged on both sides of the stroke port 300 approach each other to clamp the guide rail 2 to generate braking force.

[0025] Further, the safety clamp 3 also includes a driving assembly 33 for driving the brake block 311 to move upward, the driving assembly 33 includes an active rod 330 hinged at one end to the outside of the fixed seat 30 and a driven rod 331 hinged at one end to the inside of the fixed seat 30, the linkage rod 32 is connected between the active rods 330 on both sides, the other end of the driven rod 331 is hinged under the brake block 311 to lift the brake block 311, the driving assembly 33 also includes a driving arm 332 for driving the active rod 330 on one side to rotate, and the driving arm 332 is connected to the speed limiter through a pull rope Next, when the speed limiter senses that the descending speed of the car 1 exceeds the rated speed, the control rope is tightened to drive the driving arm 332 to rotate upward. The driving arm 332 drives the driven rod 331 to rotate upward synchronously through the active rod 330, and then the driven rod 331 lifts the brake block 311 upward to achieve braking action. It can be determined that when the driven rod 331 lifts the brake block 311 and moves upward until it contacts the guide rail 2, the lifting force decreases. At this time, the brake block 311 can continue to move upward through the friction between the friction surface and the guide rail 2, thereby increasing the braking force continuously until the car 1 stops.

[0026] Furthermore, since the brake block 311 will also move to both sides during the process of being lifted up and down by the driven rod 331, it is necessary to set a movement spacing L sufficient for the brake block 311 to slide to both sides at the hinge between the driven rod 331 and the bottom of the brake block 311, and the movement spacing L is greater than or equal to the distance that the brake block 311 deviates to both sides when it moves up and down along the brake seat 310.

[0027] In the present invention, the braking mechanism 31 in the fixed seats 30 on both sides needs to realize synchronous action through the linkage rod 32, that is, when the driven rod 331 on one side rotates upward, the driven rod 331 on the other side rotates upward synchronously. Therefore, it is necessary to set the active rods 330 in the braking mechanism 31 on both sides in opposite directions to each other. Specifically, the active rod 330 on the side close to the driving arm 332 is facing downward, and the active rod 330 on the side away from the driving arm 332 is facing upward. When the driving arm 332 drives the downward active rod 330 to rotate upward, the linkage rod 32 drives the upward active rod 330 to rotate downward, thereby achieving the above-mentioned effect.

[0028] Furthermore, in order to enable the braking mechanism 31 to reset, a reset mechanism 34 is required to be provided on the fixed seat 30. The reset mechanism 34 can be provided on the fixed seat 30 on either side. In this embodiment, it is preferably provided on the fixed seat 30 on the side away from the driving arm 332. The reset mechanism 34 includes a reset baffle 340 and a reset spring 342. One end of the reset baffle 340 is fixedly connected to the fixed seat 30, and the other end extends toward the direction of the linkage rod 32 and is bent at the end to form a limiting structure 341. The linkage rod 32 passes through the limiting structure 341. One end of the reset spring 342 is fixedly connected to one end of the linkage rod 32 close to the limiting plate, and the other end abuts against the limiting structure 341. When the upwardly arranged active rod 330 rotates downward, the reset spring 342 is compressed, and when reset is required, it can be automatically reset by the reset spring 342.

[0029] In this embodiment, in order to facilitate the installation of the driving arm 332, the driving arm 332 and the active rod 330 are detachably connected via a limiting pin.

[0030] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A safety clamp for villa elevator, characterized by: The invention comprises two groups of fixed seats (30) arranged opposite to each other, a braking mechanism (31) arranged in the fixed seats (30), and a linkage rod (32) connected between the two groups of fixed seats (30), wherein the braking mechanism (31) in the two groups of fixed seats (30) is synchronously actuated through the linkage rod (32), the two groups of fixed seats (30) are respectively fixed at the edges on both sides of the top of the car (1), the fixed seats (30) are provided with a travel opening (300) for accommodating a guide rail (2), the travel opening (300) extends in a vertical direction, the guide rail (2) is slidably fitted in the travel opening (300), the braking mechanism (31) comprises a braking seat (310) and a braking block (311) symmetrically arranged on both sides of the travel opening (300), the braking seat (310) is fixedly connected to the fixed seat (30), and the braking block (311) is connected to the braking seat (311). 0) is movably connected, a first guide surface (312) and a guide groove (313) are provided on the side of the brake seat (310) close to the travel opening (300), the guide groove (313) extends along the slope direction of the first guide surface (312), the first guide surface (312) gradually approaches the travel opening (300) from bottom to top, a second guide surface (314) is provided on the side of the brake block (311) away from the travel opening (300), the second guide surface (314) is slidably matched with the first guide surface (312), and a guide convex strip (315) for matching the sliding in the guide groove (313) is also extended on the second guide surface (314), and when the brake blocks (311) on both sides of the travel opening (300) move upward, they are driven by the first guide surface (312) and the second guide surface (314) to move closer to each other to clamp the guide rail (2).

2. A safety clamp for villa elevator according to claim 1, characterized in that: A braking surface (316) for increasing the friction force between the brake block (311) and the guide rail (2) is provided on one side of the brake block (311) close to the travel opening (300), and the braking surface (316) is provided with rough textures.

3. A safety clamp for villa elevator according to claim 1, characterized in that: The safety clamp (3) further comprises a driving assembly (33) for driving the brake block (311) to move upwards, the driving assembly (33) comprising an active rod (330) having one end hinged to the outside of the fixing seat (30) and a driven rod (331) having one end hinged to the inside of the fixing seat (30), the linkage rod (32) being connected between the active rods (330) on both sides, the other end of the driven rod (331) being hinged to the bottom of the brake block (311) to lift the brake block (311), the driving assembly (33) further comprising a driving arm (332) for driving the active rod (330) on one side to rotate, the driving arm (332) being connected to the speed limiter via a pull rope.

4. A safety clamp for villa elevator according to claim 3, characterized in that: A moving distance L is provided at the hinged portion between the lower portion of the brake block (311) and the driven rod (331) for the brake block (311) to slide to both sides.

5. A safety clamp for villa elevator according to claim 4, characterized in that: The moving distance L is greater than or equal to the distance that the brake block (311) deviates to both sides when moving up and down along the brake seat (310).

6. A safety clamp for villa elevator according to claim 3, characterized in that: The active rods (330) on both sides are arranged in opposite directions to each other, with the active rod (330) on the side close to the driving arm (332) facing downwards, and the active rod (330) on the side away from the driving arm (332) facing upwards.

7. A safety clamp for villa elevator according to claim 1, characterized in that: A reset mechanism (34) is also provided on the fixed seat (30) on one side, the reset mechanism (34) comprising a reset baffle (340) and a reset spring (342); one end of the reset baffle (340) is fixedly connected to the fixed seat (30), the other end of the reset baffle extends in the direction of the linkage rod (32) and is bent at the end to form a limiting structure (341); the linkage rod (32) passes through the limiting structure (341); one end of the reset spring (342) is fixedly connected to one end of the linkage rod (32) close to the limiting plate, and the other end of the reset spring (342) abuts against the limiting structure (341).

8. The safety clamp for villa elevator according to claim 3, characterized in that: The driving arm (332) and the active rod (330) are detachably connected via a limit pin.

Images