Safety tongs linkage lifting mechanism

Abstract

The utility model discloses a linkage lifting mechanism for safety tongs. The linkage lifting mechanism comprises two groups of safety tongs (1), two groups of mounting seats (3) and a transmission shaft (2) connected between the two groups of mounting seats (3), an elastic device is arranged on the vertical plate (7), one end of the elastic device abuts against one end of the safety tongs (1) and provides elastic force towards the floating plate (8), and the other end of the safety tongs (1) is connected with the floating plate (8). And in the braking state, the movable clamp block moves upwards and pushes the safety clamp (1) to enable the fixed clamp block and the movable clamp block to be tightly attached to the elevator guide rail (11) for braking. According to the mechanism, the safety tongs are in a dynamic balance state, so that a moving space is provided during braking, the movable tongs block and the fixed tongs block of the safety tongs can rapidly clamp the elevator guide rail, and the spring device and the safety tongs are of an integrated structure, so that later installation and debugging are facilitated.

Description

Technical Field

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

[0002] At present, there is disclosed a floating installation mechanism of a safety clamp, comprising a guide rail, a lift car, and a safety clamp; the lift car is slidably installed on the guide rail; the characteristics include: it also includes a support guide block, a positioning guide wheel, a spring seat, and a preload spring; the clamp seat of the safety clamp can be movably installed on the first side wall of the lift car; the inner left edge and the inner right edge of the clamp seat of the safety clamp each have two guide notches; the number of the support guide blocks is four; the four support guide blocks are vertically fixed on the first side wall of the lift car, and the four support guide blocks are correspondingly arranged in the four guide notches; the number of the positioning guide wheels is two; the wheel axle of the first positioning guide wheel is simultaneously penetrated The safety clamp is fixed on the upper edge of the inner side and the upper edge of the outer side of the clamp seat; the axle of the second positioning guide wheel is simultaneously fixed on the lower edge of the inner side and the lower edge of the outer side of the clamp seat of the safety clamp; the wheel surfaces of the two positioning guide wheels are tightly pressed on the guide rail; the spring seat is fixed on the front of the inner side of the clamp seat of the safety clamp; the number of pre-stressed springs is two; the axes of the two pre-stressed springs are perpendicular to the guide rail, and the axes of the two pre-stressed springs are parallel to the front of the inner side of the clamp seat of the safety clamp; the tail ends of the two pre-stressed springs are fixed to the spring seat; the head ends of the two pre-stressed springs are fixed to the inner surface of the second side wall of the lift car, and the second side wall of the lift car is perpendicular to the first side wall. The floating installation mechanism of the safety clamp of the above structure has the following shortcomings: because the head ends of the two pre-stressed springs are fixed to the inner surface of the second side wall of the lift car, the safety clamp lifting needs to be assembled on site and needs to be debugged, which brings inconvenience to the actual installation.

[0003] Also disclosed is a floating elevator safety clamp, comprising a mounting frame fixedly installed at a position of an elevator car corresponding to a car guide rail and a support frame located on the car guide rail, the support frame being movably connected to the mounting frame; a first guide rail and a second guide rail are respectively fixedly installed on the interior of the support frame corresponding to the two sides of the car guide rail, and a first wedge block and a second wedge block are respectively slidably installed on the interior of the first guide rail and the second guide rail; a connecting plate is fixedly installed on one side of the mounting frame, a pull rod for connecting to a speed limiter wire rope and pulling the second wedge block is hingedly connected between the second wedge block and the connecting plate, and a pin connected to the speed limiter wire rope is inserted on the pull rod; a safety switch that rotates with the pull rod is installed on the connecting plate; the second wedge block slides on the second guide rail driven by the pull rod and approaches or moves away from the car guide rail, and cooperates with the first wedge block to clamp or release the car guide rail. A partition is welded at the middle position of one side of the mounting frame away from the support frame, and the support frame and the mounting frame are connected by countersunk bolts; holes are provided on both sides of the mounting frame corresponding to the positions of the countersunk bolts, and the countersunk bolts penetrate the holes and are threadedly connected to the support frame; the holes are long strip-shaped, and the countersunk bolts can move closer to or away from the partition in the holes. An L-shaped pad is provided on at least one side of the partition, and one vertical surface of the L-shaped pad is located on the mounting frame, and the countersunk bolts penetrate the vertical surface of the L-shaped pad corresponding to the mounting frame; a connecting piece is provided between the other vertical surface of the L-shaped pad and the partition, and the connecting piece is movably connected to the L-shaped pad and the partition; a first reset spring is mounted on the outer wall of the connecting piece, and the two ends of the first reset spring are fixedly connected to the L-shaped pad and the partition respectively. The above-mentioned floating elevator safety clamp has the following disadvantages: since a first return spring is mounted on the outer wall of the connecting member, the two ends of the first return spring are fixedly connected to the L-shaped pad and the partition respectively; as a result, the first return spring cannot be debugged according to the installation position of different safety clamps and can only be set before leaving the factory, which also brings inconvenience to the actual installation and debugging. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a safety clamp which can be in a dynamic balance state, thereby having space to move during braking, so that the movable clamp block and the fixed clamp block of the safety clamp can quickly clamp the elevator guide rail, and the spring device and the safety clamp are integrated into an integrated structure, so as to facilitate the safety clamp linkage lifting mechanism for later installation and debugging.

[0005] The technical solution of the utility model is to provide a safety clamp linkage lifting mechanism with the following structure, comprising two groups of safety clamps and two groups of mounting seats, and a transmission shaft connected between the two groups of mounting seats; each group of safety clamps is respectively installed on the corresponding mounting seats, and the mounting seats include a first mounting plate, a top plate, a guide shoe mounting plate and a vertical plate, the top plate is arranged on the top of the first mounting plate, the guide shoe mounting plate is arranged on the bottom of the first mounting plate, the safety clamp is installed on the front side of the first mounting plate, and the vertical plate is located on the back side of the first mounting plate, each end of the transmission shaft is connected to one side of the first mounting plate and is connected to the active clamp block of the safety clamp through a floating plate; a plurality of A long hole for the safety clamp to move in the direction perpendicular to the elevator guide rail, a plurality of guide rods are arranged on the back of the safety clamp, and the plurality of guide rods respectively penetrate the long holes of the first mounting plate; each guide rod slides freely in a corresponding long hole, an elastic device is arranged on the vertical plate, one end of the elastic device abuts against one end of the safety clamp and provides elastic force toward the floating plate, and the other end of the safety clamp is connected to the floating plate; in the initial state, the safety clamp is positioned at any position by the elastic force of the elastic device and the elevator guide rail is located between the two clamp blocks of the safety clamp; in the braking state, the movable clamp block moves upward and pushes the safety clamp to make the fixed clamp block and the movable clamp block close to the elevator guide rail and stop.

[0006] The elastic device includes a movable plate, a first screw, and a first spring; the movable plate is located on the back of the first mounting plate and is fixed to the safety clamp, the first screw passes through the movable plate, the first spring is sleeved on the screw passing through the movable plate, the tail end of the first screw passes through the vertical plate and the tail end is provided with a first positioning end and a second positioning end, the first positioning end and the second positioning end are located on both sides of the vertical plate, and the distance between the first positioning end and the second positioning end is greater than the thickness of the vertical plate.

[0007] The first positioning end and the second positioning end are both tightly fastened and positioned by two bolts.

[0008] One end of the first spring abuts against the bent plate of the movable plate, and the other end abuts against the first positioning end, thereby providing elastic force for the safety clamp toward the floating plate. In the initial state, there is a distance between the first positioning end, the second positioning end and the vertical plate.

[0009] A support plate is provided at the bottom of the safety clamp, and the support plate is fixed to the bottom of the fixed clamp block of the safety clamp. A second upward screw is provided on the support plate, and a second spring is provided on the second screw. The top of the second spring abuts against the bottom of the support plate, and the bottom abuts against the head of the second screw. The top of the second screw passes through the support plate, so as to adjust the height position between the fixed clamp block and the body of the safety clamp.

[0010] The floating plate adopts a length telescopic structure and is fixed by bolt connection after telescoping.

[0011] A connecting plate arranged up and down is provided in the middle of one group of the floating plates of the safety clamp, and a collar is provided at the top and bottom of the connecting plate respectively. The floating plate provided with the connecting plate is mainly driven, and the other floating plate is passively driven. By pulling a collar, the actively driven floating plate is driven, and then the other passively driven floating plate is driven through the transmission shaft.

[0012] The transmission shaft adopts a length telescopic structure and is a rectangular pipe, and two faces of the rectangle are connected and locked by bolts.

[0013] A trigger rod is provided at the end of the transmission shaft passing through the first mounting plate. The trigger rod is arranged radially outwardly along the transmission shaft. The first mounting plate is provided with a switch. The rotation of the transmission shaft drives the trigger rod to swing and trigger the switch.

[0014] After adopting the above structure, the utility model has the following advantages:

[0015] 1. The first mounting plate is provided with a plurality of long holes for the safety clamp to move along the direction vertical to the elevator guide rail, and the back of the safety clamp is provided with a plurality of guide rods, and the plurality of guide rods respectively penetrate the long holes of the first mounting plate; each guide rod slides freely in a corresponding long hole, and an elastic device is provided on the vertical plate, one end of the elastic device abuts against one end of the safety clamp and provides elastic force toward the floating plate, and the other end of the safety clamp is connected to the floating plate, that is, the elastic device is directly installed with the first mounting plate and the safety clamp to form a whole, so that the safety clamp linkage lifting mechanism can be assembled before leaving the factory, which is convenient for the actual installation later.

[0016] 2. The elastic device includes a movable plate, a first screw and a first spring; the movable plate is located on the back of the first mounting plate and is fixed to the safety clamp, the first screw passes through the movable plate, the first spring is sleeved on the screw passing through the movable plate, the tail end of the first screw passes through the vertical plate and the tail end is provided with a first positioning end and a second positioning end, the first positioning end and the second positioning end are located on both sides of the vertical plate, the distance between the first positioning end and the second positioning end is greater than the thickness of the vertical plate, and the position of the first positioning end and the second positioning end on the first screw can be adjusted according to the actual installation of the safety clamp linkage lifting mechanism, so as to facilitate subsequent debugging.

[0017] 3. In the initial state, the safety clamp is positioned at any position by the elastic force of the elastic device and the elevator guide rail is located between the two clamp blocks of the safety clamp; in the braking state, the movable clamp block moves upward and pushes the safety clamp to make the fixed clamp block and the movable clamp block close to the elevator guide rail and stop, thereby increasing the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a three-dimensional structural schematic diagram of the safety clamp linkage lifting mechanism of the utility model.

[0019] Figure 2 The utility model is a schematic diagram of a group of safety clamps.

[0020] Figure 3 The utility model is a schematic diagram of a group of safety clamps.

[0021] Figure 4 It is a schematic diagram of the back side of a set of safety clamps of the utility model.

[0022] Figure 5 The utility model is a back exploded schematic diagram of a set of safety clamps.

[0023] Figure 6 The utility model is a front explosion schematic diagram of a set of safety clamps.

[0024] As shown in the figure: 1. safety clamp, 2. transmission shaft, 3. mounting seat, 4. first mounting plate, 5. top plate, 6. guide shoe mounting plate, 7. vertical plate, 8. floating plate, 9. guide rod, 10. long hole, 11. elevator guide rail, 12. movable plate, 13. first screw, 14. first spring, 15. first positioning end, 16, and second positioning end, 17. support plate, 18. second screw, 19. second spring, 20. connecting plate, 21. collar, 22. trigger rod, 23. switch. DETAILED DESCRIPTION

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-6 As shown, a safety clamp linkage lifting mechanism of the utility model comprises two groups of safety clamps 1 and two groups of mounting seats 3 , and a transmission shaft 2 connected between the two groups of mounting seats 3 .

[0027] like Figure 1 As shown, each set of safety clamps 1 is respectively installed on a corresponding mounting seat 3, and the mounting seat 3 includes a first mounting plate 4, a top plate 5, a guide shoe mounting plate 6 and a vertical plate 7. The top plate 5 is arranged on the top of the first mounting plate 4, the guide shoe mounting plate 6 is arranged on the bottom of the first mounting plate 4, the safety clamp 1 is installed on the front side of the first mounting plate 4, and the vertical plate 7 is located on the back side of the first mounting plate 4.

[0028] Each end of the transmission shaft 2 is connected to one side of the first mounting plate 4 and is connected to the movable clamp block of the safety clamp 1 through the floating plate 8; both ends of the transmission shaft 2 pass through the first mounting plate 4 and extend a certain distance. The transmission shaft 2 adopts a length telescopic structure and is a rectangular pipe, and two of the faces of the rectangle are bolted and locked. The transmission shaft 2 can adopt a two-section or three-section structure to achieve the telescopic inner and outer tubes.

[0029] like Figure 2 As shown, the first mounting plate 4 is provided with a plurality of long holes 10 for the safety clamp 1 to move along the direction perpendicular to the elevator guide rail 11, which are long waist holes, providing space and guidance for the safety clamp to slide. The back of the safety clamp 1 is provided with a plurality of guide rods 9, which respectively penetrate the long holes 10 of the first mounting plate 4; each guide rod 9 slides freely in a corresponding long hole 10. This embodiment adopts two groups of long holes 10, each group of which is two long holes 10 located in a straight line.

[0030] like Figure 4 As shown, an elastic device is provided on the vertical plate 7, one end of the elastic device is against one end of the safety clamp 1 and provides an elastic force toward the floating plate 8, and the other end of the safety clamp 1 is connected to the floating plate 8; in the initial state, the safety clamp 1 is positioned at any position by the elastic force of the elastic device and the elevator guide rail 11 is located between the two clamp blocks of the safety clamp 1; in the braking state, the movable clamp block moves upward and pushes the safety clamp 1 to make the fixed clamp block and the movable clamp block close to the elevator guide rail 11 and stop.

[0031] The elastic device includes a movable plate 12, a first screw rod 13, and a first spring 14; the movable plate 12 is located on the back of the first mounting plate 4 and is fixed to the safety clamp 1, the first screw rod 13 passes through the movable plate 12, the first spring 14 is sleeved on the screw rod passing through the movable plate 12, the tail end of the first screw rod 13 passes through the vertical plate 7 and is provided with a first positioning end 15 and a second positioning end 16 at the tail end, the first positioning end 15 and the second positioning end 16 are located on both sides of the vertical plate 7, and the distance between the first positioning end 15 and the second positioning end 16 is greater than the thickness of the vertical plate 7. The first positioning end 15 and the second positioning end 16 are both tightly screwed and positioned by two bolts, and the distance between the first positioning end 15 and the second positioning end 16 can be adjusted.

[0032] One end of the first spring 14 abuts against the bent plate of the movable plate 12, and the other end abuts against the first positioning end 15. The movable plate 12 is shaped to provide an elastic force for the safety clamp 1 toward the floating plate 8. In the initial state, there is a spacing between the first positioning end 15, the second positioning end 16 and the vertical plate 7.

[0033] like Figure 6 As shown, a support plate 17 is provided at the bottom of the safety clamp 1, and the support plate 17 is fixed to the bottom of the fixed clamp block of the safety clamp 1. A second screw 18 facing upward is provided on the support plate 17, and a second spring 19 is provided on the second screw 18. The top of the second spring 19 abuts against the bottom of the support plate 17, and the bottom abuts against the head of the second screw 18; the top of the second screw 18 passes through the support plate 17, so as to adjust the height position between the fixed clamp block and the body of the safety clamp 1.

[0034] The floating plate 8 adopts a length telescopic structure and is fixed by bolt connection after telescoping. There is an overlap in the middle of the floating plate, and both have aligned long holes. Two bolt and nut assemblies are arranged in the long holes for fixing.

[0035] like Figure 6 As shown, a connecting plate 20 arranged up and down is provided in the middle of the floating plate 8 of one group of safety clamps 1, and a collar 21 is provided at the top and bottom of the connecting plate 20 respectively. The floating plate 8 provided with the connecting plate 20 is mainly driven, and the other floating plate 8 is passively driven. By pulling a collar 21, the actively driven floating plate 8 is driven, and then the transmission shaft 2 is used to drive the other passively driven floating plate 8.

[0036] like Figure 2 As shown, the end of the transmission shaft 2 passing through the first mounting plate 4 is provided with a trigger rod 22, and the trigger rod 22 is arranged radially outwardly along the transmission shaft 2. The first mounting plate 4 is provided with a switch 23. The rotation of the transmission shaft 2 drives the trigger rod 22 to swing and trigger the switch 23. The switch 23 is connected to the controller and sends a signal to the controller when triggered.

Claims

1. A safety clamp linkage lifting mechanism, comprising two groups of safety clamps (1) and two groups of mounting seats (3), and a transmission shaft (2) connected between the two groups of mounting seats (3); each group of safety clamps (1) is respectively mounted on a corresponding mounting seat (3), the mounting seat (3) comprises a first mounting plate (4), a top plate (5), a guide shoe mounting plate (6) and a vertical plate (7), the top plate (5) is arranged on the top of the first mounting plate (4), the guide shoe mounting plate (6) is arranged on the bottom of the first mounting plate (4), the safety clamp (1) is mounted on the front of the first mounting plate (4), and the vertical plate (7) is arranged on the front of the first mounting plate (4). Located on the back of a first mounting plate (4), each end of the transmission shaft (2) is connected to one side of the first mounting plate (4) and is connected to a movable clamp block of a safety clamp (1) through a floating plate (8); the first mounting plate (4) is provided with a plurality of long holes (10) for the safety clamp (1) to move along a direction perpendicular to an elevator guide rail (11); the back of the safety clamp (1) is provided with a plurality of guide rods (9), the plurality of guide rods (9) respectively pass through the long holes (10) of the first mounting plate (4); each guide rod (9) freely slides in a corresponding long hole (10), characterized in that: The vertical plate (7) is provided with an elastic device, one end of which abuts against one end of the safety clamp (1) and provides an elastic force toward the floating plate (8), and the other end of the safety clamp (1) is connected to the floating plate (8); in an initial state, the safety clamp (1) is positioned at any position by the elastic force of the elastic device and the elevator guide rail (11) is located between two clamp blocks of the safety clamp (1); in a braking state, the movable clamp block moves upward and pushes the safety clamp (1) so that the fixed clamp block and the movable clamp block are in close contact with the elevator guide rail (11) and stop.

2. The safety gear linkage lifting mechanism according to claim 1, characterized in that: The elastic device comprises a movable plate (12), a first screw rod (13), and a first spring (14); the movable plate (12) is located on the back of the first mounting plate (4) and is fixed to the safety clamp (1); the first screw rod (13) passes through the movable plate (12); the first spring (14) is sleeved on the screw rod passing through the movable plate (12); the tail end of the first screw rod (13) passes through the vertical plate (7) and is provided with a first positioning end (15) and a second positioning end (16); the first positioning end (15) and the second positioning end (16) are located on both sides of the vertical plate (7); and the distance between the first positioning end (15) and the second positioning end (16) is greater than the thickness of the vertical plate (7).

3. The safety gear linkage lifting mechanism according to claim 2, characterized in that: The first positioning end (15) and the second positioning end (16) are both positioned by two bolts tightly screwed together.

4. The safety gear linkage lifting mechanism according to claim 2 or 3, characterized in that: One end of the first spring (14) abuts against the bent plate of the movable plate (12), and the other end abuts against the first positioning end (15), thereby providing an elastic force for the safety clamp (1) toward the floating plate (8). In an initial state, a spacing is provided between the first positioning end (15), the second positioning end (16) and the vertical plate (7).

5. The safety gear linkage lifting mechanism according to claim 1, characterized in that: A support plate (17) is provided at the bottom of the safety clamp (1), and the support plate (17) is fixed to the bottom of the fixed clamp block of the safety clamp (1). A second screw rod (18) facing upward is provided on the support plate (17), and a second spring (19) is provided on the second screw rod (18). The top of the second spring (19) abuts against the bottom of the support plate (17), and the bottom abuts against the head of the second screw rod (18); the top of the second screw rod (18) passes through the support plate (17), thereby adjusting the height position between the fixed clamp block and the body of the safety clamp (1).

6. The safety gear linkage lifting mechanism according to claim 1, characterized in that: The floating plate (8) adopts a length telescopic structure and is fixed by bolt connection after telescoping.

7. The safety gear linkage lifting mechanism according to claim 1, characterized in that: A connecting plate (20) arranged up and down is provided in the middle of the floating plate (8) of one group of the safety clamps (1), and a collar (21) is provided at the top and bottom of the connecting plate (20), respectively. The floating plate (8) provided with the connecting plate (20) is mainly driven, and the other floating plate (8) is passively driven. By pulling a collar (21), the actively driven floating plate (8) is driven, and then the other passively driven floating plate (8) is driven through the transmission shaft (2).

8. The safety gear linkage lifting mechanism according to claim 1 or 7, characterized in that: The transmission shaft (2) adopts a length telescopic structure and is a rectangular tube, and two faces of the rectangle are connected and locked by bolts.

9. The safety gear linkage lifting mechanism according to claim 8, characterized in that: The end of the transmission shaft (2) passing through the first mounting plate (4) is provided with a trigger rod (22), and the trigger rod (22) is arranged radially outwardly of the transmission shaft (2). The first mounting plate (4) is provided with a switch (23), and the rotation of the transmission shaft (2) drives the trigger rod (22) to swing and trigger the switch (23).

Images