Safety brake device for construction elevator

Abstract

The utility model discloses construction elevator safety braking device, the safety tongs includes the body, the back surface lower extreme fixedly connected with the guide block of body, the body one side upper end and lower end all are seted up with the slot, the body inner wall and be located between two slots seted up with the sliding slot, the body one side movable contact has antiskid board close to the slot, the antiskid board one side upper end and lower end all fixedly connected with the plug -in block close to the body, the inside and the plug -in block whole of slot are all seted up as L shape, two the inside of slot all are inserted with the plug -in block inside and are opposite, the lower extreme surface fixedly connected with the locating shaft of antiskid board, the locating shaft is inserted with the bottom surface of body, and the body front surface sets up the backing plate structure to support the bottom surface of plug -in block in the slot, and then guarantees the stable locking of plug -in block to the slot, and the plug -in block structure of the slot fixed with antiskid board in the body all simple structure, convenient processing and the combination installation of body.

Description

Technical Field

[0001] This utility model relates to the field of elevator braking technology, specifically to a safety braking device for construction elevators. Background Technology

[0002] In the safety braking device of a construction elevator, the safety clamp is the core component. When the elevator overspeeds or falls, the speed governor detects the abnormality and triggers the safety clamp to operate. Through mechanical linkage, the clamp body grips the guide rail, quickly stopping the car. Its design incorporates an electrical priority mechanism, cutting off the power supply before implementing mechanical braking to ensure a safe and reliable braking process.

[0003] Chinese patent discloses a high-speed elevator safety clamp (publication number: CN221680468U). This device drives a second bevel gear to rotate via a handle, which in turn drives a double-acting screw to rotate. The double-acting screw then moves a moving block, which can move relative to the abutment groove, allowing the support plate to move and the anti-slip plate to be inserted into the mounting groove. After the anti-slip plate is inserted, rotating the handle in the opposite direction causes the moving block to press against the support plate, enabling quick assembly and disassembly. However, this device has the following drawbacks:

[0004] In the above-mentioned device, the transmission between bevel gears drives the threaded structure on the surface of the bidirectional lead screw to lock the anti-slip plate structure. The transmission structure is relatively complex, resulting in high production costs for the safety clamp. Furthermore, the bevel gears may rotate due to shaking during the elevator's up and down movement, thus affecting the reliability of the locking structure. Therefore, a construction elevator safety braking device is proposed to solve the above problems. Utility Model Content

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A construction elevator safety braking device includes a clamp frame, with safety clamps installed on both sides of the lower end of the clamp frame;

[0007] The safety clamp includes a clamp body, a guide block is fixedly connected to the lower back of the clamp body, slots are provided at the upper and lower ends of one side of the clamp body, a sliding groove is provided on the inner wall of the clamp body between the two slots, an anti-slip plate is movably contacted on the side of the clamp body near the slots, and inserts are fixedly connected to the upper and lower ends of the side of the anti-slip plate near the clamp body. The interior of the slots and the inserts are both L-shaped, and the interiors of the two slots are inserted into and abut against the interiors of the inserts. A positioning shaft is fixedly connected to the lower surface of the anti-slip plate, and the positioning shaft is inserted into the bottom surface of the clamp body.

[0008] As a further embodiment of this utility model: an anti-slip ring is glued and fixed to the center of the front of the clamp body, a stop plate is inserted into the inner side of the anti-slip ring, the back of the stop plate abuts against the clamp body, and a pull ring is fixedly connected to the center of the front of the stop plate.

[0009] As a further embodiment of this utility model: pads are fixedly installed at the upper and lower ends of the back of the abutment, and a sliding rod is fixedly installed at one end of the middle of the back of the abutment.

[0010] As a further embodiment of this utility model: both pads are inserted into the front of the clamp body, and both pads extend into the interior of the pad, with the top surface of each pad abutting against the bottom surface of the insert block.

[0011] As a further embodiment of this utility model: the sliding rod is inserted into the front of the clamp body, the end of the sliding rod extends into the inside of the sliding groove, and the outer wall of the sliding rod is slidably connected to the inner wall of the sliding groove. A return spring is fixedly connected to the end of the sliding rod away from the abutment plate, and the other end of the return spring is fixedly connected to the inner wall of the sliding groove.

[0012] As a further embodiment of this utility model: the clamp includes an outer support, and wedge-shaped blocks are symmetrically fixedly installed on both sides of the inner wall of the outer support. The distance between the two wedge-shaped blocks gradually increases from top to bottom. A lifting rod is slidably connected through the middle of the top surface of the outer support, and a guide rail is symmetrically fixedly connected to the lower end of the lifting rod.

[0013] As a further embodiment of this utility model: one side of the slope of each of the two wedge blocks is limited and slidably connected to the clamp body, and both of the guide rails are slidably connected to the guide block.

[0014] The beneficial effects of this utility model are:

[0015] (1) This utility model uses the slot structure in the body of the safety clamp and the plug structure of the anti-slip plate for positioning, and the pad structure on the front of the clamp body supports the bottom surface of the plug in the slot, thereby ensuring the stable locking of the slot to the plug. The slot and plug structure in the body of the clamp that are fixed with the anti-slip plate are simple in structure, easy to process and assemble and install the clamp body, which is economical.

[0016] (2) The direction of movement of the pad is perpendicular to the direction of movement and swaying of the elevator, and the end of the pad is connected to the inside of the clamp body through a return spring to prevent the pad from coming out of the clamp body. In addition, the clamp body is bonded with a rubber anti-slip ring on the outside of the pad, thereby limiting the displacement of the pad through the friction of the anti-slip ring surface, thus improving the stability of the anti-slip plate when locked. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the safety clamp structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the clamp body in this utility model;

[0021] Figure 4 This is a schematic diagram of the explosion structure of the safety clamp in this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the guide rail in this utility model.

[0023] In the diagram: 1. Clamp frame; 101. Outer support; 102. Wedge block; 103. Lifting rod; 104. Guide rail; 2. Safety clamp; 201. Clamp body; 202. Guide block; 203. Anti-slip ring; 204. Slot; 205. Slide groove; 206. Support plate; 207. Pull ring; 208. Pad plate; 209. Slide rod; 210. Return spring; 211. Anti-slip plate; 212. Insert block; 213. Positioning shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-5 As shown, the construction elevator safety braking device includes a clamp frame 1, with safety clamps 2 installed on both sides of the lower end of the clamp frame 1. Each safety clamp 2 includes a clamp body 201, with a guide block 202 fixedly connected to the lower back of the clamp body 201. Slots 204 are provided at both the upper and lower ends of one side of the clamp body 201. A sliding groove 205 is provided on the inner wall of the clamp body 201 between the two slots 204. An anti-slip plate 211 is movably contacted on the side of the clamp body 201 near the slots 204. Insert blocks 212 are fixedly connected to both the upper and lower ends of the anti-slip plate 211 near the clamp body 201. The interior of the slots 204 and the insert blocks 212 are both L-shaped. The interiors of both slots 204 are inserted into and abut against the interiors of the insert blocks 212. A positioning shaft 213 is fixedly connected to the lower surface of the anti-slip plate 211, and the positioning shaft 213 is inserted into the bottom surface of the clamp body 201. Figure 3 As shown, with the support of the pad 208, the top surface of the insert 212 abuts against the L-shaped top surface of the slot 204, so the insert 212 cannot move horizontally inside the slot 204. The clamp body 201 is made of high-strength carbon structural steel.

[0026] An anti-slip ring 203 is glued and fixed to the center of the front of the clamp body 201. A stop plate 206 is inserted into the inner side of the anti-slip ring 203. The back of the stop plate 206 abuts against the clamp body 201. A pull ring 207 is fixedly connected to the center of the front of the stop plate 206. Figure 4 As shown, the anti-slip ring 203 is made of rubber, and the inner side of the anti-slip ring 203 is in close contact with the side of the abutment plate 206, thereby hindering the movement of the abutment plate 206 through friction.

[0027] A pad 208 is fixedly installed at both the upper and lower ends of the back of the abutment 206. A slide rod 209 is fixedly installed at one end of the middle of the back of the abutment 206. Both pads 208 are inserted into the front of the clamp body 201, and both pads 208 extend into the interior of the pad 208. The top surface of each pad 208 abuts against the bottom surface of the insert block 212. The slide rod 209 is inserted into the front of the clamp body 201, and the end of the slide rod 209 extends into the interior of the slide groove 205. The outer wall of the slide rod 209 is slidably connected to the inner wall of the slide groove 205. A return spring 210 is fixedly connected to the end of the slide rod 209 away from the abutment 206. The other end of the return spring 210 is fixedly connected to the inner wall of the slide groove 205. Figure 4 As shown, the return spring 210 pulls the slide bar 209 to move towards the clamp body 201, and the spring constant of the return spring 210 can be 15 N / mm.

[0028] The clamp 1 includes an outer support 101. Wedge-shaped blocks 102 are symmetrically fixedly installed on both sides of the inner wall of the outer support 101. The distance between the two wedge-shaped blocks 102 gradually increases from top to bottom. A lifting rod 103 is slidably connected through the center of the top surface of the outer support 101. Guide rails 104 are symmetrically fixedly connected to the lower end of the lifting rod 103. One side of the slope of each of the two wedge-shaped blocks 102 is limited and slidably connected to the clamp body 201. Both guide rails 104 are slidably connected to the guide blocks 202. Figures 1-3 As shown, a T-shaped limiting groove structure is provided on one side of the wedge block 102, and a T-shaped limiting block structure that matches the limiting groove is provided on the side of the clamp body 201. Thus, the clamp body 201 can move stably in a straight line along the length direction of the slope of the wedge block 102, avoiding separation of the clamp body 201 from the slope of the wedge block 102.

[0029] The working principle of this utility model:

[0030] When the device is in use, the clamp 1 is installed on the bottom beam of the car or the counterweight frame and cooperates with the guide rail to ensure that the car does not tilt when stopped. The lifting rod 103 is connected to the steel wire rope of the elevator speed governor. When the elevator speed exceeds the rated speed, the swing block of the speed governor is triggered by centrifugal force to perform mechanical action and clamp the speed governor steel wire rope. After the steel wire rope is clamped, it pulls the lifting rod 103 of the clamp to lift up, thereby the guide rail 104 drives the two clamps 201 to lift up. The clamps 201 are squeezed by the slope of the wedge block 102, the distance between the two clamps 201 is reduced and clamps the elevator guide rail.

[0031] Secondly, when the safety clamp 2 is worn and needs to be replaced, the abutment plate 206 is pulled away from the clamp body 201 by the pull ring 207. The pad plate 208 moves and comes out of the slot 204. The bottom of the insert block 212 loses the support of the pad plate 208. Then the insert block 212 and the anti-slip plate 211 fall together under the action of gravity. At this time, the insert block 212 can be moved horizontally and come out of the slot 204. The anti-slip plate 211 can be disassembled and replaced.

[0032] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A safety braking device for a construction elevator, including a clamp frame (1), wherein safety clamps (2) are provided on both sides of the lower end of the clamp frame (1); Its features are, The safety clamp (2) includes a clamp body (201). A guide block (202) is fixedly connected to the lower back of the clamp body (201). Slots (204) are provided at the upper and lower ends of one side of the clamp body (201). A sliding groove (205) is provided on the inner wall of the clamp body (201) between the two slots (204). An anti-slip plate (211) is movably contacted on the side of the clamp body (201) near the slots (204). Inserts (212) are fixedly connected to the upper and lower ends of the side of the anti-slip plate (211) near the clamp body (201). The interior of the slots (204) and the inserts (212) are both L-shaped. The interiors of the two slots (204) are inserted into and abut against the interior of the inserts (212). A positioning shaft (213) is fixedly connected to the lower surface of the anti-slip plate (211). The positioning shaft (213) is inserted into the bottom surface of the clamp body (201).

2. The construction elevator safety braking device according to claim 1, characterized in that, An anti-slip ring (203) is glued and fixed to the center of the front of the clamp body (201). A stop plate (206) is inserted into the inner side of the anti-slip ring (203). The back of the stop plate (206) abuts against the clamp body (201). A pull ring (207) is fixedly connected to the center of the front of the stop plate (206).

3. The construction elevator safety braking device according to claim 2, characterized in that, A pad (208) is fixedly installed at the upper and lower ends of the back of the abutment (206), and a slide rod (209) is fixedly installed at one end of the middle part of the back of the abutment (206).

4. The construction elevator safety braking device according to claim 3, characterized in that, Both pads (208) are inserted into the front of the clamp body (201), and both pads (208) extend into the interior of the pad (208), with the top surface of each pad (208) abutting against the bottom surface of the insert block (212).

5. The construction elevator safety braking device according to claim 4, characterized in that, The slide rod (209) is inserted into the front of the clamp body (201), the end of the slide rod (209) extends into the interior of the groove (205), and the outer wall of the slide rod (209) is slidably connected to the inner wall of the groove (205). A return spring (210) is fixedly connected to the end of the slide rod (209) away from the abutment plate (206), and the other end of the return spring (210) is fixedly connected to the inner wall of the groove (205).

6. The construction elevator safety braking device according to claim 1, characterized in that, The clamp (1) includes an outer support (101). Wedge blocks (102) are symmetrically fixed on both sides of the inner wall of the outer support (101). The distance between the two wedge blocks (102) gradually increases from top to bottom. A lifting rod (103) is slidably connected through the middle of the top surface of the outer support (101). A guide rail (104) is symmetrically fixed to the lower end of the lifting rod (103).

7. The construction elevator safety braking device according to claim 6, characterized in that, One side of the slope of each of the two wedge blocks (102) is limited and slidably connected to the clamp body (201), and the two guide rails (104) are slidably connected to the guide block (202).

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