Four-track safety clamp linkage mechanism for elevators

Abstract

The utility model discloses a four-track safety clamp linkage mechanism for an elevator, comprising a first safety clamp (1), a second safety clamp (2), a third safety clamp (3), a fourth safety clamp (4), a linkage shaft (5), and a first fixed frame (6) and a second fixed frame (7) arranged in parallel; two brake caliper blocks of each group of safety clamps are connected to a clamp block lifting handle assembly (9) through two lifting rods (8); a wire rope lifting handle plate (14) is fixed on the universal shaft sleeve (13), and the wire rope lifting handle plate (14) is fixed to the steel wire rope of the elevator; when the wire rope lifting handle plate (14) swings, all safety clamps are triggered through the linkage shaft (5) and the universal shaft sleeve (13). The mechanism adds a universal shaft sleeve on the linkage shaft to avoid jamming caused by deformation of the car frame, and adopts an adjustable double lifting rod to drive two brake caliper blocks, so as to facilitate the adjustment of the synchronization of the elevator.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator parts, in particular to a four-track safety clamp linkage mechanism of an elevator. Background Art

[0002] At present, there is disclosed a four-track safety clamp linkage mechanism with a four-lifting point structure, and the specific structure includes a speed limiter wire rope and a speed limiter lifting rod; the speed limiter wire rope is connected to the long handle end of the speed limiter lifting rod; the short handle end of the speed limiter lifting rod is hinged with a first swing assembly and / or a second swing assembly; the short handle end of the speed limiter lifting rod is connected with a third swing assembly and / or a fourth swing assembly through a linkage assembly; the first swing assembly, the second swing assembly, the third swing assembly and the fourth swing assembly are respectively hinged on the first column, the second column, the third column and the fourth column; the first swing assembly, the second swing assembly, the third swing assembly and the fourth swing group are respectively connected with the first safety clamp, the second safety clamp, the third safety clamp and the fourth safety clamp; the linkage assembly is equipped with an action switch for cutting off the elevator safety circuit. This structure uses a linkage shaft to cooperate with the swing assembly and the column to drive the safety clamp separately. The structure is complex, that is, each set of safety clamps requires a set of driving mechanisms, which makes the structure complex; in addition, after the car is deformed, the linkage shaft will not be able to drive the swing assembly and the column, and there is a possibility of jamming. In addition, the safety clamp lifting rod of this structure is a single-rod structure. When the double brake calipers need to be lifted, the single-rod safety clamp lifting rod cannot solve the synchronization problem of the brake calipers well, which is also a major technical difficulty of the linkage mechanism of this type of structure. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a four-track safety clamp linkage mechanism of an elevator which adds a universal shaft sleeve on a linkage shaft to avoid jamming caused by deformation of a car frame, and adopts an adjustable double-lifting rod to drive two brake caliper blocks to facilitate adjustment of synchronization.

[0004] The technical solution of the utility model is to provide a four-track safety clamp linkage mechanism of an elevator with the following structure, including a first safety clamp, a second safety clamp, a third safety clamp, a fourth safety clamp, a linkage shaft, and a first fixed frame and a second fixed frame arranged in parallel; the first safety clamp and the second safety clamp are installed at both ends of the first fixed frame, and the third safety clamp and the fourth safety clamp are installed at both ends of the second fixed frame, and the two brake caliper blocks of each group of safety clamps are connected to the clamp block lifting handle assembly through two lifting rods, and the clamp block lifting handle assembly is provided with a shaft sleeve, each of which is connected to the rotating shaft on each fixed frame and is circumferentially limited; it is characterized in that: the first fixed The rotating shaft on the frame is connected to one end of the linkage shaft, and the other end of the linkage shaft is connected to the rotating shaft on the second fixed frame through a universal joint sleeve and rotates synchronously. The rotating shaft connected to the first safety clamp and the rotating shaft connected to the second safety clamp are connected through a group of lifting and pulling rotating shaft assemblies; the rotating shaft connected to the third safety clamp and the rotating shaft connected to the fourth safety clamp are also connected through a group of lifting and pulling rotating shaft assemblies; a wire rope lifting hand plate is fixed on the universal joint sleeve, and the wire rope lifting hand plate is fixed to the wire rope of the elevator; in the working state, the wire rope of the elevator pulls the wire rope lifting hand plate to swing, and the swing of the wire rope lifting hand plate triggers all safety clamps through the linkage shaft and the universal joint sleeve.

[0005] The two brake caliper blocks of each group of safety calipers are connected to the caliper block lifting handle assembly through two lifting rods, which means that the two brake caliper blocks of each group of safety calipers are: a first brake caliper block and a second brake caliper block; the two lifting rods are: a first lifting rod and a second lifting rod, the first brake caliper block is fixed to the first lifting rod, and the second brake caliper block is fixed to the second lifting rod; the caliper block lifting handle assembly also includes two lifting hand plates, one end of the two lifting hand plates are respectively connected to the top of the first lifting rod and the second lifting rod, and the other end is fixed to the shaft sleeve, the shaft sleeve is sleeved on the rotating shaft and adopts detachable circumferential positioning, so that the rotating shaft drives the shaft sleeve to rotate synchronously, and the shaft sleeve drives the two lifting hand plates to drive the first brake caliper block and the second brake caliper block to move upward.

[0006] A sleeve is provided at the tail end of the wire rope lifting handle, and the sleeve is sleeved outside the linkage shaft and locked by a radially arranged pin shaft. A wire rope fixing plate is provided at the front end of the wire rope lifting handle.

[0007] Each lifting handle is connected to a screw lifting shaft, and the screw lifting shaft is provided with a connecting screw. The bottom of the connecting screw is fixed to the lifting rod, and each connecting screw is covered with a spring. The top of the spring is against the screw lifting shaft, and the bottom end is against the lifting rod. The top of the connecting screw passes through the through hole of the screw lifting shaft and is locked and fixed with multiple nuts.

[0008] The bottom of the connecting screw rod passes through the through hole of the lifting rod and is locked and fixed by a plurality of nuts.

[0009] A screw is provided at one end of the screw lifting shaft and passes through the through hole of the lifting handle and is locked by a nut. A mounting hole is provided at the other end. The top of the connecting screw passes through the mounting hole. The angle of the mounting hole is adjusted by loosening the nut and rotating the screw lifting shaft. The caliber of the mounting hole is larger than the diameter of the connecting screw.

[0010] After adopting the above structure, the utility model has the following advantages: 1. A universal shaft sleeve is added to the linkage shaft. When the wire rope pulls the linkage shaft to rotate, the universal shaft sleeve is driven. The universal shaft sleeve can transmit power and withstand torsional force while also having a large angle compensation capability. In an emergency, such as when the car is deformed, when the linkage shaft is misaligned with the rotating shaft on each fixed frame, the linkage shaft can still drive the rotating shaft to avoid jamming, thereby triggering the safety clamp normally and increasing the reliability of the entire mechanism. 2. Since the two brake caliper blocks of each set of safety calipers are connected to the caliper block lifting handle assembly through two lifting rods, it is convenient to adjust the synchronization of the two brake caliper blocks of each set of safety calipers during the actual installation process and maintenance process.

[0011] As an improvement, the two brake caliper blocks of each group of safety calipers are connected to the caliper block lifting handle assembly through two lifting rods, which means that the two brake caliper blocks of each group of safety calipers are: a first brake caliper block and a second brake caliper block; the two lifting rods are: a first lifting rod and a second lifting rod, the first brake caliper block is fixed to the first lifting rod, and the second brake caliper block is fixed to the second lifting rod; the caliper block lifting handle assembly also includes two lifting hand plates, one end of the two lifting hand plates are respectively connected to the top of the first lifting rod and the second lifting rod, and the other end is fixed to the shaft sleeve, the shaft sleeve is sleeved on the rotating shaft and adopts detachable circumferential positioning, so that the rotating shaft drives the shaft sleeve to rotate synchronously, and the shaft sleeve drives the two lifting hand plates to drive the first brake caliper block and the second brake caliper block to move upward, and the position of each brake caliper block can be adjusted individually to ensure the synchronization of the two.

[0012] As an improvement, a sleeve is provided at the tail end of the wire rope lifting handle, and the sleeve is sleeved outside the linkage shaft and locked by a radially arranged pin shaft. A wire rope fixing plate is provided at the front end of the wire rope lifting handle, which can be axially adjusted according to the position and then locked and fixed.

[0013] As an improvement, each lifting handle is connected to a screw lifting shaft, and the screw lifting shaft is provided with a connecting screw. The bottom of the connecting screw is fixed to the lifting rod, and each connecting screw is covered with a spring. The top of the spring is against the screw lifting shaft, and the bottom end is against the lifting rod. The top of the connecting screw passes through the through hole of the screw lifting shaft and is locked and fixed with multiple nuts, which can adjust the position of the two brake caliper blocks, and the adjustment structure is convenient.

[0014] As an improvement, the bottom of the connecting screw passes through the through hole of the lifting rod and is locked and fixed by multiple nuts, so that the upper and lower positions can be adjusted.

[0015] As an improvement, a screw is provided at one end of the screw lifting shaft and passes through the through hole of the lifting handle and is locked by a nut. A mounting hole is provided at the other end. The top of the connecting screw passes through the mounting hole. The angle of the mounting hole is adjusted by loosening the nut and rotating the screw lifting shaft. The caliber of the mounting hole is larger than the diameter of the connecting screw, which is convenient for installation at various angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the four-track safety clamp linkage mechanism of the elevator of the utility model.

[0017] Figure 2 The utility model is a schematic diagram of the connection of two safety clamps installed on the fixing frame.

[0018] Figure 3 This is a schematic diagram of the installation of a single safety clamp of the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the driving principle of the four-track safety clamp linkage mechanism of the elevator.

[0020] Figure 5 It is a schematic diagram of the connection between the linkage shaft and the universal joint sleeve of the utility model.

[0021] Figure 6 It is a schematic diagram of the clamp block lifting handle assembly of the utility model.

[0022] As shown in the figure:

[0023] 1. First safety clamp, 2. Second safety clamp, 3. Third safety clamp, 4. Fourth safety clamp, 5. Linkage shaft, 6. First fixed frame, 7. Second fixed frame, 9. Clamp block lifting handle assembly, 10. Bushing, 11. Rotating shaft, 12. Lifting rotating shaft assembly, 13. Universal bushing, 14. Wire rope lifting handle plate, 15. First brake caliper block, 16. Second brake caliper block, 17. First lifting rod, 18. Second lifting rod, 19. Lifting handle plate, 20. Sleeve, 21. Pin shaft, 22. Wire rope fixing plate, 23. Screw lifting shaft, 24. Connecting screw. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-2 As shown, a four-track safety clamp linkage mechanism of an elevator of the utility model comprises a first safety clamp 1, a second safety clamp 2, a third safety clamp 3, a fourth safety clamp 4, a linkage shaft 5, and a first fixing frame 6 and a second fixing frame 7 arranged in parallel, as shown in FIG. Figure 1 shown.

[0026] like Figure 2As shown, the first safety clamp 1 and the second safety clamp 2 are installed at both ends of the first fixing frame 6, and the third safety clamp 3 and the fourth safety clamp 4 are installed at both ends of the second fixing frame 7. The first fixing frame 6 and the second fixing frame 7 are in the shape of a long strip, and the first safety clamp 1, the second safety clamp 2, the third safety clamp 3, and the fourth safety clamp 4 are respectively located at the four vertices of a rectangle.

[0027] The two brake caliper blocks of each set of safety pliers are connected to the caliper block lifting handle assembly 9 through two lifting rods. The caliper block lifting handle assembly 9 is provided with a shaft sleeve 10, and each shaft sleeve 10 is connected to a rotating shaft 11 on each fixed frame and is circumferentially limited. When the rotating shaft 11 rotates, the shaft sleeve 10 is driven to rotate around the axis of the rotating shaft 11, and the rotation of the shaft sleeve 10 drives the caliper block lifting handle assembly 9 to swing upward around the axis of the rotating shaft 11, and the other end of the caliper block lifting handle assembly 9 triggers the safety pliers to work upward.

[0028] like Figure 4 and Figure 5 As shown, the rotating shaft 11 on the first fixing frame 6 is connected to one end of the linkage shaft 5, and the other end of the linkage shaft 5 is connected to the rotating shaft 11 on the second fixing frame 7 through a universal shaft sleeve 13 and rotates synchronously. Therefore, the linkage shaft 5 can ensure that the rotating shafts 11 at both ends are driven, and avoid being stuck even if the car is deformed.

[0029] like Figure 4 As shown, the rotating shaft 11 on the first safety clamp 1 and the rotating shaft 11 on the third safety clamp 3 are located on the same straight line. The rotating shaft 11 on the second safety clamp 2 and the rotating shaft 11 on the fourth safety clamp 4 are located on the same straight line. The rotating shaft 11 connected to the first safety clamp 1 and the rotating shaft 11 connected to the second safety clamp 2 are connected through a set of lifting shaft assemblies 12; the rotating shaft 11 on the first safety clamp 1 rotates, and then drives the rotating shaft 11 on the second safety clamp 2 through the lifting shaft assembly 12. The rotating shaft 11 connected to the third safety clamp 3 and the rotating shaft 11 connected to the fourth safety clamp 4 are also connected through a set of lifting shaft assemblies 12. The linkage shaft 5 rotates and drives the rotating shaft 11 on the third safety clamp 3, and then drives the fourth safety clamp 4 through the lifting shaft assembly 12.

[0030] like Figure 1 As shown, a wire rope pulling handle 14 is fixed on the universal shaft sleeve 13, and the wire rope pulling handle 14 is fixed to the wire rope of the elevator; in the working state, the wire rope of the elevator pulls the wire rope pulling handle 14 to swing, and the swing of the wire rope pulling handle 14 triggers all safety clamps through the linkage shaft 5 and the universal shaft sleeve 13.

[0031] like Figure 2 and Figure 3As shown, the two brake caliper blocks of each set of safety calipers are connected to the caliper block lifting handle assembly 9 through two lifting rods, which means that the two brake caliper blocks of each set of safety calipers are: a first brake caliper block 15 and a second brake caliper block 16; the two lifting rods are: a first lifting rod 17 and a second lifting rod 18, the first brake caliper block 15 is fixed to the first lifting rod 17, and the second brake caliper block 16 is fixed to the second lifting rod 18. The first lifting rod 17 drives the first brake caliper block 15 upward, and the second lifting rod 18 drives the second brake caliper block 16 upward. During operation, it is necessary to ensure that the first brake caliper block 15 and the second brake caliper block 16 act synchronously.

[0032] like Figure 3 and Figure 6 As shown, the clamp block lifting handle assembly 9 also includes two lifting handle plates 19, which are arranged in parallel and connected by a reinforcing plate in the middle to increase the strength of the two. One end of the two lifting handle plates 19 is respectively connected to the top of the first lifting rod 17 and the second lifting rod 18, and the other end is fixed to the shaft sleeve 10. The shaft sleeve 10 is sleeved on the rotating shaft 11 and adopts a detachable circumferential positioning, so that the rotating shaft 11 drives the shaft sleeve 10 to rotate synchronously, and the shaft sleeve 10 drives the two lifting handle plates 19 to drive the first brake caliper block 15 and the second brake caliper block 16 to move upward.

[0033] like Figure 5 As shown, the tail end of the wire rope lifting handle 14 is provided with a sleeve 20, which is sleeved outside the linkage shaft 5 and locked by a radially arranged pin 21, so that the linkage shaft 5 rotates synchronously with the sleeve 20. The front end of the wire rope lifting handle 14 is provided with a wire rope fixing plate 22.

[0034] Each lifting handle 19 is connected to a screw lifting shaft 23, and the screw lifting shaft 23 is provided with a connecting screw 24. The bottom of the connecting screw 24 is fixed to the lifting rod 18, and each connecting screw 24 is covered with a spring. The top of the spring is against the screw lifting shaft 23, and the bottom end is against the lifting rod. The top of the connecting screw 24 passes through the through hole of the screw lifting shaft 23 and is locked and fixed with a plurality of nuts. This structure can adjust the synchronous action of the first brake caliper block 15 and the second brake caliper block 16.

[0035] The bottom of the connecting screw 24 passes through the through hole of the lifting rod and is locked and fixed by a plurality of nuts. The length of the bottom of the connecting screw 24 passing through the lifting rod can be adjusted by loosening the nuts.

[0036] One end of the screw lifting shaft 23 is provided with a screw which passes through the through hole of the lifting handle 19 and is locked by a nut, and the other end is provided with a mounting hole, and the top of the connecting screw 24 passes through the mounting hole. The angle of the mounting hole is adjusted by loosening the nut and rotating the screw lifting shaft 23. The caliber of the mounting hole is larger than the diameter of the connecting screw 24.

Claims

1. A four-track safety clamp linkage mechanism for an elevator, comprising a first safety clamp (1), a second safety clamp (2), a third safety clamp (3), a fourth safety clamp (4), a linkage shaft (5), and a first fixing frame (6) and a second fixing frame (7) arranged in parallel; the first safety clamp (1) and the second safety clamp (2) are mounted at both ends of the first fixing frame (6), and the third safety clamp (3) and the fourth safety clamp (4) are mounted at both ends of the second fixing frame (7); characterized in that: The two brake caliper blocks of each set of safety calipers are connected to the caliper block lifting handle assembly (9) through two lifting rods. The caliper block lifting handle assembly (9) is provided with a shaft sleeve (10). Each shaft sleeve (10) is connected to a rotating shaft (11) on each fixing frame and is circumferentially limited. The rotating shaft (11) on the first fixing frame (6) is connected to one end of the linkage shaft (5). The other end of the linkage shaft (5) is connected to the rotating shaft (11) on the second fixing frame (7) through a universal shaft sleeve (13) and rotates synchronously. The rotating shaft (11) connected to the first safety caliper (1) and the rotating shaft (11) connected to the second safety caliper (2) are connected to the first safety caliper (1). The rotating shaft (11) is connected via a set of lifting rotating shaft assemblies (12); the rotating shaft (11) connected to the third safety clamp (3) and the rotating shaft (11) connected to the fourth safety clamp (4) are also connected via a set of lifting rotating shaft assemblies (12); a wire rope lifting hand plate (14) is fixed on the universal shaft sleeve (13), and the wire rope lifting hand plate (14) is fixed to the steel wire rope of the elevator; in the working state, the steel wire rope of the elevator pulls the wire rope lifting hand plate (14) to swing, and the swing of the wire rope lifting hand plate (14) triggers all the safety clamps through the linkage shaft (5) and the universal shaft sleeve (13).

2. The four-rail safety clamp linkage mechanism of an elevator according to claim 1, characterized in that: The two brake caliper blocks of each set of safety calipers are connected to the caliper block lifting handle assembly (9) via two lifting rods, which means that the two brake caliper blocks of each set of safety calipers are: a first brake caliper block (15) and a second brake caliper block (16); the two lifting rods are: a first lifting rod (17) and a second lifting rod (18), the first brake caliper block (15) is fixed to the first lifting rod (17), and the second brake caliper block (16) is fixed to the second lifting rod (18); the caliper block lifting handle assembly (9) includes It also includes two lifting handles (19), one end of the two lifting handles (19) is respectively connected to the top of the first lifting rod (17) and the second lifting rod (18), and the other end is fixed to the shaft sleeve (10). The shaft sleeve (10) is sleeved on the rotating shaft (11) and adopts a detachable circumferential positioning method, so that the rotating shaft (11) drives the shaft sleeve (10) to rotate synchronously, and the shaft sleeve (10) drives the two lifting handles (19) to drive the first brake caliper block (15) and the second brake caliper block (16) to move upward.

3. The four-track safety clamp linkage mechanism of an elevator according to claim 1, characterized in that: A sleeve (20) is provided at the tail end of the wire rope lifting handle (14), and the sleeve (20) is sleeved outside the linkage shaft (5) and locked by a radially arranged pin shaft (21). A wire rope fixing plate (22) is provided at the front end of the wire rope lifting handle (14).

4. The four-rail safety clamp linkage mechanism of an elevator according to claim 2, characterized in that: Each lifting handle (19) is connected to a screw lifting shaft (23), and the screw lifting shaft (23) is provided with a connecting screw (24). The bottom of the connecting screw (24) is fixed to the lifting rod (18). Each connecting screw (24) is covered with a spring, the top of the spring is against the screw lifting shaft (23), and the bottom of the spring is against the lifting rod. The top of the connecting screw (24) passes through the through hole of the screw lifting shaft (23) and is locked and fixed by a plurality of nuts.

5. The four-rail safety clamp linkage mechanism of an elevator according to claim 4, characterized in that: The bottom of the connecting screw rod (24) passes through the through hole of the lifting rod and is locked and fixed by a plurality of nuts.

6. The four-rail safety clamp linkage mechanism of an elevator according to claim 4, characterized in that: One end of the screw lifting shaft (23) is provided with a screw which passes through the through hole of the lifting handle (19) and is locked by a nut, and the other end is provided with a mounting hole, and the top of the connecting screw (24) passes through the mounting hole. The angle of the mounting hole is adjusted by loosening the nut and rotating the screw lifting shaft (23). The caliber of the mounting hole is larger than the diameter of the connecting screw (24).

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