Underneath type safety tongs lifting mechanism of elevator

Abstract

The utility model discloses an underneath type safety gear lifting mechanism of an elevator. The underneath type safety gear lifting mechanism comprises a first safety gear (1), a first mounting seat (2), a second safety gear (3), a second mounting seat (4) and a connecting rod structure (5), lifting plates of the first safety tongs (1) and lifting plates of the second safety tongs (3) are located in the corresponding installation bases, a lifting mechanism of the first safety tongs (1) is connected with a first linkage set below, and a lifting mechanism of the second safety tongs (3) is connected with a second linkage set below. During triggering, the lifting mechanisms of the first safety tongs (1) and the second safety tongs (3) drive the pressing wheels and the brake caliper blocks upwards, so that the pressing wheels and the brake caliper blocks of the safety tongs are tightly attached to an elevator guide rail for braking, and the lifting plates of the lifting mechanisms are arranged at the bottoms of the safety tongs, so that stress is small when braking is triggered; and the height adjustment and the synchronism adjustment of the brake caliper block are convenient.

Description

Technical Field

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

[0002] At present, there is a disclosed integrated brake device for elevators, which includes two safety clamps and a lifting mechanism for linking the two safety clamps. The lifting mechanism includes a rotating shaft, a shift fork and a swing arm corresponding to each safety clamp. The rotating shaft passes through the two side plates of the safety clamp and is rotatably mounted. The shift fork is linked and mounted on the rotating shaft. The extended end of the shift fork extends to the bottom of the active wedge of the safety clamp to brake the active wedge of the linked safety clamp. The swing arm is linked and connected with the extended end of the rotating shaft outside the side plate of the safety clamp. The two swing arms corresponding to the two safety clamps are linked and connected through a connecting rod mechanism, and the two swing arms face opposite directions. The extended end of one rotating shaft is linked and connected with a lifting arm, and the end of the lifting arm away from the rotating shaft is used for lifting linkage. A safety switch is installed on the side plate of the safety clamp corresponding to the other rotating shaft, and the swing arm of the safety clamp located on the same safety switch has a trigger position, which is used to trigger the safety switch. The active wedge of the safety clamp is installed with a lifting plate, and the lifting plate has a lifting part extending below the shift fork. When the active wedge of the safety clamp moves, the lifting part of the lifting plate is linked with the shift fork to trigger the safety switch. The lifting plate of the integrated brake device of the above structure is located at the bottom of the back of the safety caliper. When triggered, the lifting plate pushes the connecting rod of the brake caliper block. This braking requires a large force because the distance between the rotating shaft and the lifting plate is short, that is, the force arm is short, so a large braking force is required. In addition, the distance between the connecting rod of the lifting plate and the brake caliper block is limited by space constraints, and the adjustment of its position and synchronization is inconvenient. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a bottom-mounted safety clamp lifting mechanism which arranges a lifting plate at the bottom of the safety clamp so as to reduce the force when the brake is triggered and facilitates height and synchronization adjustment of the brake caliper block.

[0004] The technical solution of the utility model is to provide a bottom-mounted safety clamp lifting mechanism of an elevator with the following structure, including a first safety clamp, a first mounting seat, a second safety clamp, a second mounting seat and a connecting rod structure; it is characterized in that: the first safety clamp is arranged on the upper part of the first mounting seat, and the second safety clamp is arranged on the upper part of the second mounting seat; one end of the connecting rod structure is connected to the first safety clamp through a first linkage assembly, and the other end is connected to the second safety clamp through a second linkage assembly; the lifting plates of the first safety clamp and the second safety clamp are both located in the corresponding mounting seats, the lifting mechanism of the first safety clamp is connected to the first linkage group, and the lifting mechanism of the second safety clamp is connected to the second linkage group, and when triggered, the respective lifting mechanisms of the first safety clamp and the second safety clamp drive the pressure wheel and the brake caliper block upwards, so that the pressure wheel and the brake caliper block of each safety clamp are tightly attached to the elevator guide rail and stopped.

[0005] The first safety clamp and the second safety clamp are both provided with a first lifting plate and a second lifting plate, the first linkage assembly and the second linkage assembly both include a connecting pipe, a first driving arm, a second driving arm, and a swing block, the first lifting plate is fixed to the bottom of the pressure plate on which the pressure wheel is installed on the safety clamp, the second lifting plate is fixed to the bottom of the brake caliper block on the safety clamp, the first driving arm and the second driving arm are arranged in parallel and one end of each is fixed on the connecting pipe, the other end of the first driving arm is connected to the bottom of the first lifting plate, and the other end of the second driving arm is connected to the bottom of the second lifting plate.

[0006] The swing block is fixed to the connecting tube and is located on the outside of the mounting seat. One end of the connecting rod structure is connected to the bottom end of the swing block on the first mounting seat, and the other end is connected to the top end of the swing block on the second mounting seat. When triggered, the first lifting plate pushes the pressure wheel upward and the second lifting plate pushes the brake caliper block upward.

[0007] The swing blocks installed at both ends of the connecting pipe are arranged in parallel, and when the connecting pipe rotates, they also rotate in the same direction and at the same angle along the axis of the connecting pipe.

[0008] The tops of the first lifting plate and the second lifting plate are both provided with a first connector, the top of the first connector is fixed to the bottom of the pressure plate or the brake caliper block, and the bottom is rotatably connected to the lifting plate.

[0009] The bottom of the first lifting plate and the second lifting plate are each provided with a downward notch, and the ends of the first driving arm and the second driving arm are rotatably connected to a second connecting head. A screw is provided in the second connecting head along the up and down directions. The top of the screw is a light tube and is embedded in the notch. The top of the screw is against the inner top surface of the notch, and the bottom is screwed into the threaded hole of the second connecting head and is locked in place by a nut. The screw is rotated to adjust the distance extending out of the second connecting head.

[0010] The distance between the second connector and the bottom of the mounting seat is smaller than the distance between the connecting pipe and the bottom of the mounting seat.

[0011] The second connecting head is pushed upward by the lifting plate and enters into the safety clamp.

[0012] After adopting the above structure, the utility model has the following advantages: 1. The mounting seat is set at the bottom of the safety clamp, and the lifting mechanisms of the first safety clamp and the second safety clamp are both located in the corresponding mounting seat. The lifting mechanism of the first safety clamp is connected to the first linkage group, and the lifting mechanism of the second safety clamp is connected to the second linkage group, that is, the lifting plate is bottom-mounted and is located at the bottom of the brake caliper block of the safety clamp, thereby increasing the distance from the lifting plate to the connecting pipe of the linkage assembly. According to the principle of lever, the increase of the force arm can reduce the force, so that the force is small during braking. 2. Since the linkage mechanism is located in the mounting seat and at the bottom of the safety clamp, there is enough space to adjust the position and distance between the lifting plate and the brake caliper block and between the lifting plate and the pressure wheel and the pressure wheel pressure plate. The height of the caliper block can be adjusted, and the synchronization adjustment of the two caliper blocks of the safety clamp is also more convenient.

[0013] As an improvement, the first safety clamp and the second safety clamp are both provided with a first lifting plate and a second lifting plate, the first linkage assembly and the second linkage assembly both include a connecting tube, a first driving arm, a second driving arm, and a swing block, the first lifting plate is fixed to the bottom of the pressure plate on which the pressure wheel is installed on the safety clamp, the second lifting plate is fixed to the bottom of the brake caliper block on the safety clamp, the first driving arm and the second driving arm are arranged in parallel and one end of each is fixed on the connecting tube, the other end of the first driving arm is connected to the bottom of the first lifting plate, and the other end of the second driving arm is connected to the bottom of the second lifting plate. This structure enables the lifting plate to be installed to the bottom of the safety clamp, which is convenient for adjusting the synchronization between the pressure wheel and the brake caliper block and adjusting the height of the brake caliper block.

[0014] As an improvement, the swing block is fixed to the connecting tube and is located on the outside of the mounting seat, one end of the connecting rod structure is connected to the bottom end of the swing block on the first mounting seat, and the other end is connected to the top end of the swing block on the second mounting seat; when triggered, the first lifting plate pushes the pressure wheel upward, and the second lifting plate pushes the brake caliper block upward, and the brake caliper blocks of the two sets of safety calipers are driven to work through a connecting rod.

[0015] As an improvement, a first connecting head is provided on the top of the first lifting plate and the second lifting plate. The top of the first connecting head is fixed to the bottom of the pressure plate or the brake caliper block, and the bottom is rotatably connected to the lifting plate. The lifting plates are guided by the brake caliper block and the pressure wheel by making the two have a certain swing.

[0016] As an improvement, the bottom of the first lifting plate and the second lifting plate are each provided with a downward notch, and the ends of the first driving arm and the second driving arm are rotatably connected to a second connecting head. A screw is provided in the second connecting head along the up and down directions. The top of the screw is a light tube and is embedded in the notch and the top of the screw is against the inner top surface of the notch, and the bottom is screwed into the threaded hole of the second connecting head and is locked in place by a nut. The screw is rotated to adjust the distance extending out of the second connecting head, which is convenient for adjusting the connection position of the lifting plate and the driving arm and convenient for adjusting the synchronization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the bottom-mounted safety clamp lifting mechanism of the elevator of the utility model.

[0018] Figure 2 This is a partial schematic diagram of one of the safety clamps.

[0019] Figure 3 This is a schematic diagram of the interior of one of the safety gears.

[0020] Figure 4 It is a schematic diagram of another perspective of the bottom-mounted safety clamp lifting mechanism of the elevator of the utility model.

[0021] Figure 5 It is a left side schematic diagram of the utility model.

[0022] Figure 6 It is a right side schematic diagram of the utility model.

[0023] Figure 7 It is a main schematic diagram of the utility model.

[0024] Figure 8 It is a right rear view schematic diagram of the utility model.

[0025] As shown in the figure:

[0026] 1. First safety clamp, 2. First mounting seat, 3. Second safety clamp, 4. Second mounting seat, 5. Connecting rod structure, 6. First lifting plate, 7. Second lifting plate, 8. Connecting pipe, 9. First driving arm, 10. Second driving arm, 11. Swing block, 12. Pressure wheel, 13. Pressure plate, 14. Brake caliper block, 15. First connecting head, 16. Second connecting head, 17. Screw. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1-8As shown, a bottom-mounted safety clamp lifting mechanism of an elevator of the utility model comprises a first safety clamp 1, a first mounting seat 2, a second safety clamp 3, a second mounting seat 4 and a connecting rod structure 5. The first safety clamp 1 and the second safety clamp 3 are respectively connected to the two ends of the connecting rod structure 5, and the connecting rod structure 5 synchronously drives the safety clamps at both ends.

[0029] like Figure 1 As shown, the first safety clamp 1 is arranged on the upper part of the first mounting seat 2, and the second safety clamp 3 is arranged on the upper part of the second mounting seat 4; one end of the connecting rod structure 5 is connected to the first safety clamp 1 through a first linkage assembly, and the other end is connected to the second safety clamp 3 through a second linkage assembly.

[0030] The lifting plates of the first safety clamp 1 and the second safety clamp 3 are both located in the corresponding mounting seats, and the lifting mechanisms are both located below the safety clamps. The lifting mechanism of the first safety clamp 1 is connected to the first linkage group, and the lifting mechanism of the second safety clamp 3 is connected to the second linkage group. When triggered, the respective lifting mechanisms of the first safety clamp 1 and the second safety clamp 3 drive the pressure wheel and the brake caliper block upward, so that the pressure wheel and the brake caliper block of each safety clamp are tightly attached to the elevator guide rail and stopped.

[0031] The first safety clamp 1 and the second safety clamp 3 are both provided with a first lifting plate 6 and a second lifting plate 7, that is, one safety clamp is provided with two lifting plates. The lifting plates of the utility model move upward when triggered.

[0032] like Figure 2 and Figure 3 As shown, the first linkage assembly and the second linkage assembly both include a connecting pipe 8, a first driving arm 9, a second driving arm 10, and a swing block 11. The first lifting plate 6 is fixed to the bottom of a pressure plate 13 on which a pressure wheel 12 is installed on the safety tongs, and the second lifting plate 7 is fixed to the bottom of a brake caliper block 14 on the safety tongs. When triggered, the first lifting plate 6 pushes the pressure plate 13 upward, and the pressure plate 13 drives the pressure wheel 12 upward; the second lifting plate 7 pushes the brake caliper block 14 upward, so that the brake caliper block 14 is close to the elevator guide rail and stops.

[0033] The first driving arm 9 and the second driving arm 10 are arranged in parallel and one end of each is fixed on the connecting tube 8, the other end of the first driving arm 9 is connected to the bottom of the first lifting plate 6, and the other end of the second driving arm 10 is connected to the bottom of the second lifting plate 7. When the connecting tube 8 rotates, the first driving arm 9 and the second driving arm 10 are driven to swing around the axis of the connecting tube 8.

[0034] The swing block 11 is fixed to the connecting pipe 8 and is located outside the mounting seat. The swing block 11 is a lever with a fulcrum located on the axis of the connecting pipe 8. Through holes are provided at both ends. The two ends of the connecting rod structure 5 are respectively hinged to one of the swing blocks. Figure 1As shown, the left end of the connecting rod structure 5 is connected to the bottom end of the swing block 11 , and the right end is connected to the top end of the swing block 11 .

[0035] One end of the connecting rod structure 5 is connected to the bottom end of the swing block 11 on the first mounting seat 2, and the other end is connected to the top end of the swing block 11 on the second mounting seat 4; when triggered, the first lifting plate 6 pushes the pressure wheel 12 upward, and the second lifting plate 7 pushes the brake caliper block 14 upward.

[0036] The swing blocks 11 installed at both ends of the connecting pipe 8 are arranged in parallel, and when the connecting pipe 8 rotates, they also rotate in the same direction and at the same angle along the axis of the connecting pipe 8 .

[0037] like Figure 2 and Figure 3 As shown, the tops of the first lifting plate 6 and the second lifting plate 7 are both provided with a first connector 15, the top of the first connector 15 is fixed to the bottom of the pressure plate 13 or the brake caliper block, and the bottom is rotatably connected to the lifting plate. The first connector 15 includes a top plate and two side plates, a rotating shaft is provided on the two side plates, the axis of the rotating shaft is perpendicular to the lifting plate, and a through hole is provided at the top of the lifting plate and is sleeved outside the rotating shaft, so that the lifting plate can rotate around the rotating shaft.

[0038] like Figure 3 As shown, the bottom of the first lifting plate 6 and the second lifting plate 7 are each provided with a downward notch, and the ends of the first driving arm 9 and the second driving arm 10 are rotatably connected to the second connecting head 16, and the second connecting head 16 is provided with a screw 17 arranged along the up and down directions. The top of the screw 17 is a light tube and is embedded in the notch and the top of the screw 17 is against the inner top surface of the notch, and the bottom is screwed into the threaded hole of the second connecting head 16 and is locked in place by a nut. The screw 17 is rotated to adjust the distance extending from the second connecting head 16. Through this structure, the extension distance of the screw 17 can be adjusted, which drives the extension distance of the lifting plate, thereby adjusting the height of the pressure wheel 12 or the brake caliper block 14, as well as the synchronization of the two during braking.

[0039] The distance between the second connector 16 and the bottom of the mounting seat is smaller than the distance between the connecting pipe 8 and the bottom of the mounting seat. The second connector 16 is pushed upward by the lifting plate and enters the interior of the safety clamp. A cover plate is provided on the outer side of the safety clamp mounting pressure wheel and the brake caliper block. A long hole is provided on the cover plate to guide the movement of the pressure wheel and the brake caliper block when they are stopped upward.

Claims

1. A bottom-mounted safety clamp lifting mechanism for an elevator, comprising a first safety clamp (1), a first mounting seat (2), a second safety clamp (3), a second mounting seat (4) and a connecting rod structure (5); characterized in that: The first safety clamp (1) is arranged on the upper part of the first mounting seat (2), and the second safety clamp (3) is arranged on the upper part of the second mounting seat (4); one end of the connecting rod structure (5) is connected to the first safety clamp (1) through a first linkage assembly, and the other end is connected to the second safety clamp (3) through a second linkage assembly; the lifting plates on the first safety clamp (1) and the second safety clamp (3) are both located in the corresponding mounting seats, the lifting mechanism of the first safety clamp (1) is connected to the first linkage group below, and the lifting mechanism of the second safety clamp (3) is connected to the second linkage group below. When triggered, the respective lifting mechanisms of the first safety clamp (1) and the second safety clamp (3) drive the pressure wheel and the brake caliper block upwards, so that the pressure wheel and the brake caliper block of each safety clamp are tightly attached to the elevator guide rail and stopped.

2. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 1, characterized in that: The first safety clamp (1) and the second safety clamp (3) are both provided with a first lifting plate (6) and a second lifting plate (7); the first linkage assembly and the second linkage assembly both comprise a connecting tube (8), a first driving arm (9), a second driving arm (10), and a swing block (11); the first lifting plate (6) is fixed to the bottom of a pressure plate (13) on which a pressure wheel (12) is mounted on the safety clamp; the second lifting plate (7) is fixed to the bottom of a brake caliper block (14) on the safety clamp; the first driving arm (9) and the second driving arm (10) are arranged in parallel and one end of each is fixed to the connecting tube (8); the other end of the first driving arm (9) is connected to the bottom of the first lifting plate (6); the other end of the second driving arm (10) is connected to the bottom of the second lifting plate (7).

3. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 2, characterized in that: The swing block (11) is fixed to the connecting tube (8) and is located outside the mounting seat; one end of the connecting rod structure (5) is connected to the bottom end of the swing block (11) on the first mounting seat (2), and the other end is connected to the top end of the swing block (11) on the second mounting seat (4); when triggered, the first lifting plate (6) pushes the pressure wheel (12) upwards, and the second lifting plate (7) pushes the brake caliper block (14) upwards.

4. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 3, characterized in that: The swing blocks (11) installed at both ends of the connecting pipe (8) are arranged in parallel, and when the connecting pipe (8) rotates, they also rotate in the same direction and at the same angle along the axis of the connecting pipe (8).

5. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 2, characterized in that: The tops of the first lifting plate (6) and the second lifting plate (7) are both provided with a first connecting head (15), the top of the first connecting head (15) is fixed to the bottom of the pressure plate (13) or the brake caliper block, and the bottom is rotatably connected to the lifting plate.

6. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 2, characterized in that: The bottom of the first lifting plate (6) and the second lifting plate (7) are each provided with a downward notch, and the ends of the first driving arm (9) and the second driving arm (10) are rotatably connected to a second connecting head (16), and a screw (17) is provided in the second connecting head (16) along the up and down directions, and the top of the screw (17) is a light tube and is embedded in the notch and the top of the screw (17) is against the inner top surface of the notch, and the bottom is screwed into the threaded hole of the second connecting head (16) and is locked in place by a nut, and the screw (17) is rotated to adjust the distance extending from the second connecting head (16).

7. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 6, characterized in that: The distance between the second connecting head (16) and the bottom of the mounting seat is smaller than the distance between the connecting pipe (8) and the bottom of the mounting seat.

8. The bottom-mounted safety gear lifting mechanism of an elevator according to claim 6, characterized in that: The second connecting head (16) is pushed upward by the lifting plate and enters the interior of the safety clamp.

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