Elevator counterweight safety tongs capable of improving utilization rate of hoistway

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator counterweight safety gear capable of improving the utilization rate of a shaft, which comprises an upper beam frame, a lower beam frame, adjustable counterweight frames, a counterweight block and a safety gear component. A plurality of layers of counterweight blocks are installed between the lower portions of the two adjustable counterweight frames, and a safety gear assembly is installed between the upper portions of the two adjustable counterweight frames. According to the elevator counter-weight safety tongs, an adjustable counter-weight frame comprises a counter-weight frame body, a counter-weight block clamping groove, a locking groove, side baffles, a toothed plate and a locking screw rod, the gauge distance between the two side baffles is adjustable, and the toothed plate can be locked in a sliding groove by screwing down the locking screw rod. In this way, the installation requirement of the counterweight block with the minimum width of 140 mm can be met, and the utilization rate of a hoistway is increased. In addition, the safety tongs assembly is reasonable in design and small in size, and production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator counterweight safety clamp capable of improving the utilization rate of a shaft. Background Art

[0002] The elevator counterweight safety clamp is a safety device installed on the elevator's counterweight. Its primary functions are as follows: 1) Emergency Braking: When an elevator experiences an abnormal condition such as overspeed or a broken rope, the safety clamp quickly engages the brake rail, bringing the elevator to a smooth stop and preventing it from falling uncontrollably, thereby protecting passengers and the elevator equipment. 2) Load Support: The elevator counterweight safety clamp is capable of withstanding high loads and supports the entire elevator system in the event of an accident, preventing serious damage from a loss of support. 3) Maintaining Balance: The elevator counterweight safety clamp also maintains the balance of the counterweight, ensuring the stability of the elevator during operation. During elevator travel, the counterweight generates strong shock and vibration, which the elevator counterweight safety clamp reduces, thereby protecting the mechanical components of the elevator equipment and extending its service life. 4) Improving Safety: The elevator counterweight safety clamp is a crucial component of the elevator safety system. Its presence and effective operation significantly improve elevator safety, reduce the likelihood of elevator accidents, and provide greater security for passengers and elevator companies.

[0003] Traditional elevator counterweight safety clamps were found to have shortcomings during use. First, their applicability is poor. Most of them are only suitable for counterweight blocks with a width of ≥220mm, and cannot meet the installation requirements of counterweight blocks with a minimum width of 140mm, resulting in low shaft utilization. Second, the design of their safety clamps is not reasonable, their size is large, and their production cost is high. Therefore, their structure needs to be optimized and improved. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned problems existing in the traditional technology and provide an elevator counterweight safety clamp which can improve the utilization rate of the hoistway.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] An elevator counterweight safety clamp capable of improving hoistway utilization comprises an upper beam, a lower beam, an adjustable counterweight frame, a counterweight block, and a safety clamp assembly. The adjustable counterweight frame is symmetrically mounted between the upper beam and the lower beam, multiple layers of counterweight blocks are mounted between the lower portions of the two adjustable counterweight frames, and the safety clamp assembly is mounted between the upper portions of the two adjustable counterweight frames.

[0007] The adjustable counterweight frame includes a counterweight frame body, a counterweight block slot is provided on the inner side of the counterweight frame body, a locking slot is provided on the outer side of the counterweight frame body, side baffles are symmetrically installed in the counterweight block slot, and a plurality of equally distributed tooth plates are fixed to the inner ends of the side baffles. The tooth plates of the two side baffles are staggered with each other, and a plurality of sliding grooves are evenly provided on the bottom surface of the counterweight block slot for facilitating the sliding of the corresponding tooth plates. A locking screw for locking the tooth plate in the sliding groove is installed on the partition between the counterweight block slot and the locking slot of the counterweight frame body.

[0008] Furthermore, in the above-mentioned elevator counterweight safety clamp capable of improving shaft utilization, the cross section of the tooth plate is a dovetail structure that is wide inside and narrow outside, and the cross section of the slide groove is a dovetail groove structure that is wide inside and narrow outside.

[0009] Furthermore, in the above-mentioned elevator counterweight safety clamp capable of improving the utilization rate of the shaft, the maximum spacing value between the two side baffles is 280 mm, and the minimum spacing value is 140 mm.

[0010] Furthermore, in the above-mentioned elevator counterweight safety clamp capable of improving the utilization rate of the hoistway, two rows of staggered fastening screw holes are provided on the partition of the counterweight frame body located between the counterweight block slot and the locking slot.

[0011] Furthermore, in the above-mentioned elevator counterweight safety clamp that can improve the utilization rate of the shaft, the safety clamp assembly includes a connecting rod, a safety clamp pull rod, a linkage device and a safety clamp, the middle part of the connecting rod is installed with the safety clamp pull rod, and the two ends of the connecting rod are respectively connected to the safety clamp via the linkage device.

[0012] Furthermore, in the above-mentioned elevator counterweight safety clamp capable of improving the utilization rate of the hoistway, the safety clamp is provided with a safety clamp jaw.

[0013] Furthermore, in the elevator counterweight safety clamp that can improve the utilization rate of the shaft, the safety clamp jaws of the two safety clamps are located on the same horizontal plane, so that the safety clamps on both sides can be actuated simultaneously, and friction with the guide rails can generate braking force to brake the counterweight.

[0014] Furthermore, in the above-mentioned elevator counterweight safety clamp capable of improving the utilization rate of the hoistway, a pulling device connected to the safety clamp pull rod in the safety clamp assembly is also installed on the side end of the upper beam.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides an elevator counterweight safety clamp, which is mainly composed of an upper beam frame, a lower beam frame, an adjustable counterweight frame, a counterweight block, and a safety clamp assembly. The adjustable counterweight frame includes a counterweight frame body, a counterweight block slot, a locking slot, side baffles, a tooth plate, and a locking screw. The spacing between the two side baffles is adjustable, and the tooth plate can be locked in the position of the slide slot by tightening the locking screw. This method can meet the installation requirements of counterweight blocks with a minimum width of 140 mm, thereby improving hoistway utilization. In addition, the safety clamp assembly is rationally designed and compact, which helps reduce production costs.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model as a whole;

[0020] Figure 2 It is a side view schematic diagram of the overall structure of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the adjustable counterweight frame in the present invention;

[0022] Figure 4 This is a structural diagram of the side baffle and the tooth plate of the utility model;

[0023] Figure 5 This is a schematic structural diagram of the safety gear assembly in the present utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1-upper beam, 2-lower beam, 3-adjustable counterweight frame, 301-counterweight frame body, 302-counterweight block slot, 303-locking slot, 304-side baffle, 305-tooth plate, 306-locking screw, 4-counterweight, 5-safety gear assembly, 501-connecting rod, 502-safety gear pull rod, 503-linkage device, 504-safety gear, 505-safety gear jaws. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1-Figure 5 As shown, this embodiment provides an elevator counterweight safety clamp that can improve hoistway utilization, comprising an upper beam 1, a lower beam 2, an adjustable counterweight frame 3, a counterweight block 4, and a safety clamp assembly 5. The adjustable counterweight frames 3 are symmetrically mounted between the upper beam 1 and the lower beam 2. A plurality of layers of counterweight blocks 4 are mounted between the lower portions of the two adjustable counterweight frames 3. The safety clamp assembly 5 is mounted between the upper portions of the two adjustable counterweight frames 3.

[0028] In this embodiment, the adjustable counterweight frame 3 includes a counterweight frame body 301. A counterweight retaining slot 302 is defined on the inner side of the counterweight frame body 301, and a locking slot 303 is defined on the outer side of the counterweight frame body 301. Side guards 304 are symmetrically mounted within the counterweight retaining slot 302. A plurality of equally spaced toothed plates 305 are fixed to the inner ends of the side guards 304, with the toothed plates 305 of the two side guards 304 positioned staggered relative to one another. The bottom surface of the counterweight retaining slot 302 is uniformly defined with multiple sliding grooves for facilitating the sliding of the corresponding toothed plates 305. A locking screw 306 is mounted on the partition between the counterweight retaining slot 302 and the locking slot 303 of the counterweight frame body 301, which is used to lock the toothed plates 305 in their positions within the sliding grooves.

[0029] In this embodiment, the cross section of the tooth plate 305 is a dovetail structure that is wide inside and narrow outside, and the cross section of the slide groove is a dovetail groove structure that is wide inside and narrow outside.

[0030] In this embodiment, the maximum distance between the two side baffles 304 is 280 mm, and the minimum distance between the two side baffles 304 is 140 mm.

[0031] In this embodiment, two rows of staggered fastening screw holes are opened on the partition between the counterweight block slot 302 and the locking slot 303 of the counterweight frame body 301, and the fastening screw holes cooperate with the corresponding locking screws 306.

[0032] In this embodiment, the safety clamp assembly 5 includes a connecting rod 501, a safety clamp pull rod 502, a linkage device 503 and a safety clamp 504. The safety clamp pull rod 502 is installed in the middle of the connecting rod 501, and the two ends of the connecting rod 501 are respectively connected to the safety clamp 504 through the linkage device 503.

[0033] In this embodiment, the safety clamp 504 is provided with a safety clamp jaw 505, and the safety clamp jaws 505 of the two safety clamps 504 are located on the same horizontal plane, so that the safety clamps 504 on both sides can be actuated simultaneously, and friction with the guide rail generates braking force to brake the counterweight.

[0034] In this embodiment, a lifting device connected to the safety gear pull rod 502 in the safety gear assembly 5 is also installed on the side end of the upper beam 1.

[0035] A specific application of this embodiment is as follows: This elevator counterweight safety clamp is mainly composed of an upper beam frame 1, a lower beam frame 2, an adjustable counterweight frame 3, a counterweight 4, and a safety clamp assembly 5. The adjustable counterweight frame 3 includes a counterweight frame body 301, a counterweight slot 302, a locking slot 303, side guards 304, a tooth plate 305, and a locking screw 306. The spacing between the two side guards 304 is adjustable. The tooth plate 305 can be locked in the position of the chute by tightening the locking screw 306. This method can meet the installation requirements of counterweights with a minimum width of 140 mm, thereby improving hoistway utilization. In addition, the safety clamp assembly 5 is rationally designed and compact, which helps reduce production costs.

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An elevator counterweight safety clamp capable of improving shaft utilization, characterized in that: It includes an upper beam, a lower beam, an adjustable counterweight frame, a counterweight block and a safety gear assembly. The adjustable counterweight frame is symmetrically installed between the upper beam and the lower beam, multiple layers of counterweight blocks are installed between the lower parts of the two adjustable counterweight frames, and a safety gear assembly is installed between the upper parts of the two adjustable counterweight frames. The adjustable counterweight frame includes a counterweight frame body, a counterweight block slot is provided on the inner side of the counterweight frame body, a locking slot is provided on the outer side of the counterweight frame body, side baffles are symmetrically installed in the counterweight block slot, and a plurality of equally distributed tooth plates are fixed to the inner ends of the side baffles. The tooth plates of the two side baffles are staggered with each other, and a plurality of sliding grooves are evenly provided on the bottom surface of the counterweight block slot for facilitating the sliding of the corresponding tooth plates. A locking screw for locking the tooth plate in the sliding groove is installed on the partition between the counterweight block slot and the locking slot of the counterweight frame body.

2. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 1, characterized in that: The cross section of the tooth plate is a dovetail structure that is wide inside and narrow outside, and the cross section of the chute is a dovetail groove structure that is wide inside and narrow outside.

3. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 2, characterized in that: The maximum spacing between the two side baffles is 280 mm, and the minimum spacing is 140 mm.

4. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 3 is characterized in that: The counterweight frame body is provided with two rows of staggered fastening screw holes on a partition plate located between the counterweight block clamping groove and the locking groove.

5. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 4, characterized in that: The safety clamp assembly comprises a connecting rod, a safety clamp pull rod, a linkage device and a safety clamp. The middle part of the connecting rod is provided with the safety clamp pull rod, and both ends of the connecting rod are respectively connected with the safety clamp via the linkage device.

6. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 5, characterized in that: The safety gear is provided with a safety gear jaw.

7. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 6, characterized in that: The safety clamp jaws of the two safety clamps are located on the same horizontal plane, so that the safety clamps on both sides can be actuated simultaneously, and friction with the guide rails can generate braking force to brake the counterweight.

8. The elevator counterweight safety clamp capable of improving hoistway utilization according to claim 7, characterized in that: The side end of the upper beam is also provided with a pulling device connected to the safety gear pull rod in the safety gear assembly.

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