CN211056444U

CN211056444U - Box-type elevator safety tongs with buffering function

Info

Publication number: CN211056444U
Application number: CN201921648414.XU
Authority: CN
Inventors: 顾玉峰
Original assignee: Zhangjiagang Qiyuan Elevator Parts Manufacturing Co ltd
Current assignee: Zhangjiagang Qiyuan Elevator Parts Manufacturing Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-21
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a from box elevator safety tongs of taking buffer function, including the pincers body, a set of recess has been seted up to a side symmetry of the pincers body, be provided with the elevator guide rail in the recess, the bilateral symmetry of elevator guide rail is provided with bearing guide one and bearing guide two, bearing guide one is close to one side of elevator guide rail is provided with rather than matched with fixed voussoir one, bearing guide two is close to one side of elevator guide rail is provided with rather than matched with fixed voussoir two. Has the advantages that: therefore, when the second spring and the second control block move upwards in the two directions of the fixed wedge block, the reciprocating motion space of the second spring and the second control block is smaller and smaller, and the falling elevator stops moving in a buffering mode, so that the situation that the falling elevator stops moving suddenly by matching the fixed wedge block and the sliding wedge block of the traditional elevator safety tongs, and passengers in the elevator are injured is avoided.

Description

Box-type elevator safety tongs with buffering function

Technical Field

The utility model relates to an elevator safety tongs field particularly, relates to a from box elevator safety tongs of taking buffer function.

Background

Safety tongs are the safety arrangement of elevator. The elevator safety gear device is a safety device which emergently stops a car and clamps the car on a guide rail under the operation of a speed limiter when the speed of an elevator exceeds the set limit speed of the speed limiter of the elevator or a suspension rope is broken and loosened. It provides effective protection for the safe operation of the elevator and is generally installed on a car frame or a counterweight frame. The safety tongs are divided into one-way safety tongs and two-way safety tongs, but the two-way safety tongs are not popularized in China due to the complex manufacturing process.

The existing elevator safety tongs are matched with a fixed wedge block, a lifting rod, a sliding wedge block and the like to break down and fall down quickly in an elevator, when the falling speed reaches a limited speed, although the safety tongs can stop the falling elevator, when the fixed wedge block is matched with the sliding wedge block, the rapidly falling elevator can stop moving suddenly, and further, the situation that passengers riding in an elevator car are injured can be caused.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a from box elevator safety tongs of taking buffer function to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

the box type elevator safety tongs with the buffering function comprise a tong body, a group of grooves are symmetrically formed in one side of the tong body, elevator guide rails are arranged in the grooves, a roller pin guide rail I and a roller pin guide rail II are symmetrically arranged on two sides of each elevator guide rail, a fixed wedge block I matched with the roller pin guide rail I is arranged on one side, close to the elevator guide rails, of the roller pin guide rail I, a fixed wedge block II matched with the roller pin guide rail II is arranged on one side, close to the elevator guide rails, of the roller pin guide rail II, a control block I is arranged below the fixed wedge block I and below the fixed wedge block II respectively, and the control block I is connected with the tong body through a spring.

Furthermore, the lifting rod is driven to drive the first fixed wedge block and the second fixed wedge block to stop the elevator in order to start the speed limiter, so that the lifting rod is arranged, and when the elevator falls to exceed a certain speed per hour, the top end of the first fixed wedge block and the top end of the second fixed wedge block are respectively provided with the lifting rod.

Furthermore, in order to avoid the sudden stop of the elevator when falling, a second spring and a second control block are arranged, and then the second spring and the second control block can be matched with the first spring and the first control block, a limiting groove is formed in one side, close to the first fixed wedge, of the second fixed wedge, a second group of springs are symmetrically arranged in the limiting groove, and a second control block matched with the elevator guide rail is arranged at one end, far away from the limiting groove, of the second spring.

Furthermore, in order to better stop the elevator from falling, the side of the control block II far away from the spring II and the side of the fixed wedge block I close to the elevator guide rail are respectively provided with a brake block.

Furthermore, in order to avoid the injury of passengers in the elevator, the buffer mechanism is arranged, so that the elevator can stop falling motion in a buffer mode through the second control block and the second spring, the buffer mechanism comprises a connecting plate connected with the first control block and a mounting seat connected with the clamp body, a piston rod is arranged in the middle of one side, away from the first control block, of the connecting plate, a first spring is sleeved on the piston rod, a group of mounting blocks are symmetrically arranged on the two sides of the piston rod and located on the connecting plate, an air cavity matched with the piston rod is formed in one side, close to the connecting plate, of the mounting seat, a group of cavities are symmetrically formed in two sides of the air cavity, a group of third springs are symmetrically arranged in the cavities, and one ends, away from the inner walls of the cavities, of the third springs are connected with the.

Further, in order to brake the falling elevator to stop moving, an acute angle is formed between the wedge surface of the first fixed wedge block and the horizontal plane and between the wedge surface of the second fixed wedge block and the horizontal plane, and the acute angle is formed between the wedge surface of the first fixed wedge block and the horizontal plane and between the wedge surface of the second fixed wedge block and the horizontal plane.

The utility model has the advantages that:

1. compare with traditional elevator safety tongs, the utility model discloses a set up control block two and spring two phase coordination, thereby when elevator out of control tenesmus surpasss certain speed per hour, the overspeed governor begins work drive lifting rod to move to the top, drive fixed voussoir one simultaneously and two to the top motion of fixed voussoir, at this moment, when two to the top motion of fixed voussoir, spring two and control block two reciprocating motion space in the recess are more and more littleer, the messenger's of formula that can cushion elevator stop motion that descends, traditional elevator safety tongs have been avoided cooperateing through fixed voussoir and slip voussoir and have made the elevator sudden stop motion that descends, and then the messenger takes the passenger injured's in the elevator condition.

2. Through the arrangement of the buffer mechanism and the first control block, the second control block is matched with the second spring and the first brake block to be used as a part for mainly controlling the falling elevator to stop moving, the buffer mechanism is matched with the first control block to be used as a part for assisting in controlling the falling elevator to stop moving, and the buffer mechanism is matched with the first control block to assist in falling the elevator in the falling process of the elevator, so that the phenomenon that the falling elevator suddenly stops moving due to the fact that the traditional elevator safety tongs are matched with the sliding wedge block through the fixed wedge block, and then passengers riding in the elevator are injured is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a box type elevator safety gear with a buffer function according to an embodiment of the invention;

FIG. 2 is a schematic view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a buffer mechanism of a box type elevator safety gear with a buffer function according to an embodiment of the present invention.

In the figure:

1. a clamp body; 2. a groove; 3. an elevator guide rail; 4. a needle roller guide rail I; 5. a second needle roller guide rail; 6. fixing a wedge block I; 7. fixing a second wedge block; 701. a limiting groove; 702. a second spring; 703. a second control block; 8. a first control block; 9. a buffer mechanism; 901. a connecting plate; 902. a mounting seat; 903. a piston rod; 904. a first spring; 905. mounting blocks; 906. an air chamber; 907. a cavity; 908. a third spring; 10. lifting a pull rod; 11. a brake pad.

Detailed Description

Referring to the drawings and the detailed description, as shown in fig. 1-3, the box type elevator safety tongs with a buffering function according to the embodiment of the present invention comprises a tong body 1, a set of grooves 2 are symmetrically formed on one side of the tong body 1, an elevator guide rail 3 is disposed in each groove 2, a roller guide rail 4 and a roller guide rail two 5 are symmetrically disposed on both sides of the elevator guide rail 3, a fixed wedge block 6 matched with the roller guide rail is disposed on one side of the roller guide rail 4 close to the elevator guide rail 3, a fixed wedge block 7 matched with the roller guide rail is disposed on one side of the roller guide rail two 5 close to the elevator guide rail 3, a control block 8 is disposed below the fixed wedge block 6 and below the fixed wedge block 7 respectively, and the control block 8 is connected to the tong body 1 through a buffering mechanism 9, therefore, by arranging the first control block 8 and the second buffer mechanism 9 to be matched and the second spring 702 and the second control block 703 to be matched, when the elevator is out of control and drops, the rebound force of the buffer mechanism 9 and the second spring 702 can buffer the elevator during dropping, so that the elevator is prevented from suddenly stopping.

In one example, for the first fixed wedge 6 and the second fixed wedge 7, the top end of the first fixed wedge 6 and the top end of the second fixed wedge 7 are respectively provided with a lifting rod 10, so that by arranging the lifting rods 10, when the elevator drops beyond a certain speed per hour, the speed limiter starts to drive the lifting rods 10 to drive the first fixed wedge 6 and the second fixed wedge 7 to stop the elevator.

In one example, for the second fixed wedge 7, a limit groove 701 is formed in one side, close to the first fixed wedge 6, of the second fixed wedge 7, a set of second springs 702 are symmetrically arranged in the limit groove 701, and a second control block 703 matched with the elevator guide rail 3 is arranged at one end, far away from the limit groove 701, of the second springs 702, so that the second springs 703 and the second control block 703 can be matched with the buffer mechanism 9 and the first control block 8, and sudden stop of the elevator when dropping is avoided.

In one example, for the second control block 703 and the first fixed wedge 6, the side of the second control block 703 away from the second spring 702 and the side of the first fixed wedge 6 close to the elevator guide rail 3 are respectively provided with a brake block 11, so that the elevator can be better stopped from falling by arranging the brake blocks 11.

In an example, for the above-mentioned buffer mechanism 9, the buffer mechanism 9 includes a connecting plate 901 connected to the control block one 8 and a mounting seat 902 connected to the caliper body 1, a piston rod 903 is disposed at a middle position of one side of the connecting plate 901 away from the control block one 8, a spring one 904 is sleeved on the piston rod 903, a set of mounting blocks 905 is symmetrically disposed on two sides of the piston rod 903 and on the connecting plate 901, an air cavity 906 matched with the piston rod 903 is disposed on one side of the mounting seat 902 close to the connecting plate 901, a set of cavities 907 is symmetrically disposed on two sides of the air cavity 906, a set of spring three 908 is symmetrically disposed in the cavities 907, one end of the spring three 908 away from an inner wall of the cavity 907 is connected to the mounting block 905, so that the buffer mechanism 9 is disposed to assist the control block two 703 and the spring two 702 to buffer and stop the elevator from dropping, avoiding injuries to passengers riding in the elevator.

In one example, for the first fixed wedge 6 and the second fixed wedge 7, the wedge surface of the first fixed wedge 6 and the wedge surface of the second fixed wedge 7 and the horizontal plane are respectively at acute angles, so that the falling elevator is braked to stop moving by setting the wedge surfaces of the first fixed wedge 6 and the second fixed wedge 7 and the horizontal plane to be at acute angles.

The working principle is as follows: when the elevator is in use, the elevator falls due to failure, when the falling speed reaches a limited speed, the speed limiter starts to work to drive the lifting rod 10 to move upwards, the left side surface of the second fixed wedge block 7 is matched with the right needle roller surface of the second needle roller guide rail 5 under the action of the lifting rod 10, the right side surface of the first fixed wedge block 6 is matched with the left needle roller surface of the first needle roller guide rail 4 to drive the second control block 703, the brake block 11 and the second spring 702 to move upwards, at the moment, the second spring 702 is matched with the second control block 703 and the brake block 11 to buffer and stop the elevator in the falling process of the elevator, and at the moment, the buffer mechanism 9 is matched with the first control block 8 to stop the elevator.

To sum up, with the help of the above-mentioned technical scheme of the utility model, compare with traditional elevator safety tongs, the utility model discloses a set up control block two 703 and cooperate with spring two 702, thereby when the elevator out of control tenesmus exceeds certain hourly speed, the overspeed governor begins work and drives the pull rod upward movement, drive fixed voussoir one 6 and fixed voussoir two 7 upward movement simultaneously, at this moment, spring two 702 and control block two 703 when fixed voussoir two 7 upward movement, the reciprocating motion space of spring two 702 and control block two 703 is littleer and more, the elevator stop motion that makes the tenesmus of bufferable formula, and then avoided traditional elevator safety tongs to cooperate through fixed voussoir and sliding wedge and make the elevator suddenly stop motion of tenesmus, make the passenger's injured condition of taking in the elevator, cooperate through setting up buffer gear 9 and control block one 8, thereby cooperate as the elevator stop motion that mainly controls the tenesmus at control block two 703 and spring two 702 and brake block 11 And in the part, the buffer mechanism 9 is matched with the control block I8 to be used as a part for assisting the falling of the elevator to stop moving, and the buffer mechanism 9 is matched with the control block I8 to enable the elevator to fall in a buffer mode in the falling process of the elevator, so that the situation that the falling elevator is suddenly stopped moving by matching the traditional elevator safety tongs with the sliding wedge block through the fixed wedge block and passengers in the elevator are injured is avoided.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A box type elevator safety gear with a buffer function comprises a gear body (1) and is characterized in that, one side of the clamp body (1) is symmetrically provided with a group of grooves (2), elevator guide rails (3) are arranged in the grooves (2), a roller pin guide rail I (4) and a roller pin guide rail II (5) are symmetrically arranged on two sides of the elevator guide rail (3), one side of the needle roller guide rail I (4) close to the elevator guide rail (3) is provided with a fixed wedge block I (6) matched with the needle roller guide rail I, one side of the second needle roller guide rail (5) close to the elevator guide rail (3) is provided with a second fixed wedge block (7) matched with the second needle roller guide rail, a first control block (8) is respectively arranged below the first fixed wedge block (6) and the second fixed wedge block (7), the first control block (8) is connected with the clamp body (1) through a buffer mechanism (9).

2. The box type elevator safety gear with buffering function according to claim 1, characterized in that the top end of the first fixed wedge block (6) and the top end of the second fixed wedge block (7) are respectively provided with a lifting rod (10).

3. The box type elevator safety gear with the buffering function according to claim 1, characterized in that a limiting groove (701) is formed in one side, close to the first fixing wedge block (6), of the second fixing wedge block (7), a set of second springs (702) are symmetrically arranged in the limiting groove (701), and one ends, far away from the limiting groove (701), of the second springs (702) are provided with second control blocks (703) matched with the elevator guide rails (3).

4. The safety tongs of a box type elevator with a buffer function as claimed in claim 3, wherein the side of the second control block (703) far away from the second spring (702) and the side of the first fixed wedge (6) close to the guide rail (3) of the elevator are respectively provided with a brake block (11).

5. The box type elevator safety tongs with the buffering function according to claim 1, wherein the buffering mechanism (9) comprises a connecting plate (901) connected with the first control block (8) and a mounting seat (902) connected with the tongs body (1), a piston rod (903) is arranged in the middle of one side of the connecting plate (901) far away from the first control block (8), a first spring (904) is sleeved on the piston rod (903), a group of mounting blocks (905) are symmetrically arranged on the connecting plate (901) and on two sides of the piston rod (903), an air cavity (906) matched with the piston rod (903) is formed in one side of the mounting seat (902) close to the connecting plate (901), a group of cavities (907) are symmetrically formed in two sides of the air cavity (906), and a group of third springs (908) are symmetrically arranged in the cavities (907), one end of the spring three (908) far away from the inner wall of the cavity (907) is connected with the mounting block (905).

6. The box type elevator safety gear with buffering function according to claim 1, characterized in that the wedge surface of the first fixed wedge (6) and the wedge surface of the second fixed wedge (7) are acute angles with the horizontal plane respectively.