CN111348519B - Elevator safety tongs structure - Google Patents
Elevator safety tongs structure Download PDFInfo
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- CN111348519B CN111348519B CN202010278583.XA CN202010278583A CN111348519B CN 111348519 B CN111348519 B CN 111348519B CN 202010278583 A CN202010278583 A CN 202010278583A CN 111348519 B CN111348519 B CN 111348519B
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- wedge
- connecting rod
- car
- wedge block
- block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
Abstract
The invention provides an elevator safety gear structure, and belongs to the technical field of safety gears. The elevator safety gear structure comprises a first wedge-shaped block, a needle roller row, a second wedge-shaped block, a lifting rod, a fixing piece, a connecting piece and an expansion extrusion piece. The fixing piece keeps one end of the first wedge block parallel to one end of the guide rail, the distance between the first wedge block and the guide rail is unchanged, the first wedge block is prevented from being inclined to be unfavorable for the second wedge block to extend between the first wedge block and the guide rail so as to brake the first wedge block, the connecting piece respectively connects the other end of the first wedge block and the second wedge block to the car in a rotating mode, the lifting rod is pulled to the second wedge block to move towards the direction close to the first wedge block, and the expansion extrusion piece expands and extrudes the lower end of the second wedge block under the impact of the lower end of the car so as to enable the second wedge block to move towards the direction close to the first wedge block, so that the second wedge block is accelerated to move towards the direction of the first wedge block, and the car braking efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of safety tongs, and relates to an elevator safety tong structure.
Background
Safety tongs are an important safety part in elevator equipment and are used for emergency braking of a car and clamping of the car on elevator guide rails in the event of faults such as overspeed, rope breakage and the like of the elevator. However, if the car is skewed, the safety gear is also skewed with respect to the guide rail, and the safety gear cannot safely stop the car on the guide rail.
Chinese patent CN209583321U discloses a progressive elevator safety gear, including two mounting panels, the both ends of two mounting panels are connected through strengthening the post, mounting panel both ends installation fixed block, two fixed block inner wall joint slip tong pieces, slip tong piece inner wall installation damping fin, install the deflector on the fixed block, it has the guide way to open on the deflector, slip tong piece both sides wall installation guide block, the guide block joint is in the guide way, guide block and guide way bottom are connecting spring's both ends respectively, the pull rod is connected on slip tong piece top, install air jet system between slip tong piece and fixed block top lateral wall. When the elevator car is out of control and falls, the lifting rod pulls the sliding clamp block, the sliding clamp block moves upwards and clamps the elevator guide rail, the damping fin is tightly attached to the elevator guide rail to provide friction force to stop the elevator car, and the air injection device injects air to the outer wall of the damping fin to blow away impurities such as sand and dust, so that the damping fin is well contacted with the elevator guide rail. The safety gear in the above patent is not aligned with the guide rail when the car is tilted, and the safety gear cannot stop the car on the guide rail quickly.
Disclosure of Invention
The invention provides a structure of an elevator safety gear aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to provide an elevator safety gear structure which can keep parallel with a guide rail and quickly stop a car on the guide rail.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an elevator safety tongs structure for stop the car on the guide rail when the suspension rope has been broken or the car overspeed, including first wedge, set up in the needle bar of first wedge inboard lower extreme, set up in the second wedge of needle bar lower extreme, set up in the pull rod of second wedge upper end, be used for keeping first wedge one end and guide rail one end parallel and the unchangeable mounting of distance between the two, be used for respectively with the first wedge other end, the second wedge rotates the connecting piece of connecting in the car and be used for receiving the striking of car lower extreme and inflation extrusion second wedge lower extreme makes the second wedge towards the inflation extruded article that is close to the direction motion of first wedge.
Preferably, first wedge sets up in 2 at the guide rail both ends including the symmetry, the figure of second wedge and the figure of first wedge are equal, still including connecting in the gangboard of two second wedges respectively, it connects in the gangboard to carry the pull rod, the mounting includes the second spout that is used for setting up in the first spout of guide rail one end, sets up the guide rail other end, sets up first gyro wheel in first spout, sets up the second gyro wheel in the second spout, sets up in the first pivot at first gyro wheel middle part, cup joints in the first bearing of first pivot one end, cup joints in the second bearing of the first pivot other end, one end is connected in the first connecting rod of the outer lane of first bearing, one end is connected in the second connecting rod of the outer lane of second bearing, both ends are connected respectively in the third connecting rod other end and the third connecting rod of the second connecting rod other end, both ends are connected respectively in the fourth connecting rod of third connecting rod and a first wedge lateral wall upper end, The second rotating shaft is arranged in the middle of the second roller, the third bearing is sleeved at one end of the second rotating shaft, the fourth bearing is sleeved at the other end of the second rotating shaft, one end of the fifth connecting rod is connected to the outer ring of the third bearing, one end of the sixth connecting rod is connected to the outer ring of the fourth bearing, the two ends of the seventh connecting rod are respectively connected to the other end of the fifth connecting rod and the other end of the sixth connecting rod, and the two ends of the eighth connecting rod are respectively connected to the other end of the seventh connecting rod and the upper end of the outer side wall of the other first wedge block.
Preferably, a center line of the fourth link, a center line of the third link, and a center line of the first roller coincide with each other, and a center line of the eighth link, a center line of the seventh link, and a center line of the second roller coincide with each other.
Preferably, the connecting piece rotates including the first backup pad that is fixed in the first wedge other end, one end and connects in the first hinge of car, one end rotate connect in the second hinge of first backup pad, be fixed in second backup pad on the second wedge, both ends connect respectively in the buffer cylinder of first backup pad and second backup pad, cup joint in buffer cylinder's first spring, first hinge articulates in the second hinge.
Preferably, the width of the first wedge-shaped block is equal to the width of the second wedge-shaped block, the first support plate is perpendicular to the first wedge-shaped block, and the second support plate is parallel to the first support plate.
Preferably, the expansion extrusion part comprises an air bag connected to the lower end of the second wedge-shaped block, an accommodating box connected to the air bag, and a second spring of which two ends are respectively connected to the lower end of the car and the accommodating box, and the accommodating box comprises an air bag sensor, an electronic controller and a gas generator which are arranged at the lower end of the car; gas generator connects in the gasbag, the air bag sensor sends the striking signal to electronic controller when receiving the car striking, electronic controller controls gas generator and aerifys for the gasbag when receiving the striking signal that the air bag sensor sent, the gasbag is aerifyd the inflation and is promoted the second wedge and move towards the direction that is close to first wedge.
Preferably, one end of the accommodating box is provided with a limiting plate for stopping the air bag, and the limiting plate is arranged at the lower end of the air bag.
Preferably, a ratchet groove is formed in the guide rail, a ratchet claw is hinged to the inner side wall of the second wedge-shaped block, and the ratchet claw vertically moves upwards along the ratchet groove when the second wedge-shaped block vertically moves upwards.
Preferably, the central line of first spout and the central line of second spout all coincide with the central line of guide rail, the central line of first wedge and the central line of second wedge all coincide with the central line of guide rail, the ratchet groove sets up in 2 at first spout both ends and the symmetry sets up in 2 at second spout both ends including the symmetry, the ratchet claw is including 2 of the central line of a second wedge of symmetry and 2 of the central line of another second wedge of symmetry.
Preferably, the middle part of the second wedge-shaped block is convexly provided with an elastic clamping block which is clamped in one of the first sliding groove and the second sliding groove, and the thickness of the elastic clamping block, the thickness of the first sliding groove and the thickness of the second sliding groove are equal.
The invention has the following beneficial effects: 1. the fixing piece keeps one end of the first wedge block parallel to one end of the guide rail, the distance between the first wedge block and the guide rail is unchanged, the first wedge block is prevented from inclining and being unfavorable for the second wedge block to extend into the space between the first wedge block and the guide rail so as to brake the first wedge block, the car is conveniently and quickly braked, the connecting piece respectively rotatably connects the other end of the first wedge block and the second wedge block to the car, and therefore the car is conveniently pulled when the first wedge block is kept parallel to one end of the guide rail, when the suspension rope is broken or the cage is subjected to ultrasonic sound, the lifting rod is pulled to the second wedge block to move towards the direction close to the first wedge block, the expansion extrusion piece is impacted by the lower end of the cage to expand and extrude the lower end of the second wedge block, so that the second wedge block moves towards the direction close to the first wedge block, therefore, the second wedge-shaped block is accelerated to move towards the first wedge-shaped block, and the car braking efficiency is improved;
2. the first idler wheel rolls in the first sliding groove, the second idler wheel rolls in the second sliding groove, one end of each of the 2 first wedge-shaped blocks is kept parallel to one end of the guide rail, the first wedge-shaped blocks are prevented from inclining, and meanwhile, the first wedge-shaped blocks can conveniently move up and down relative to the guide rails when moving up and down along with the lift car;
3. the first support plate is fixed on the first wedge-shaped block, the first hinge shaft is rotatably connected to the car, the second hinge shaft is rotatably connected to the first support plate, the first hinge shaft is hinged to the second hinge shaft, so that the first wedge-shaped block is rotatably connected to the car, the car is conveniently stopped on the guide rail by the first wedge-shaped block, the second support plate is fixed on the second wedge-shaped block, the buffer cylinder and the first spring are respectively arranged between the first support plate and the second support plate, the second wedge-shaped block is arranged on the first wedge-shaped block, and the buffer cylinder and the first spring can absorb shock for the second wedge-shaped block when the first wedge-shaped block vibrates to extrude the second wedge-shaped block;
4. when a suspension rope is broken or the cage is overspeed, the speed of the cage is higher than that of the accommodating box, the cage compresses the second spring to further impact the airbag sensor, the airbag sensor sends an impact signal to the electronic controller when being impacted by the cage, the electronic controller controls the gas generator to inflate the airbag when receiving the impact signal sent by the airbag sensor, the airbag is inflated to expand to push the second wedge block to move towards the direction close to the first wedge block, so that the second wedge block is pushed to move towards the direction close to the first wedge block in an accelerating manner, the speed of the cage braking on the guide rail by the safety gear structure is accelerated, and the braking efficiency of the safety gear structure is improved;
5. the limiting plate is arranged at one end of the containing box, and can stop the air bag after the air bag is inflated, so that the air bag expands towards the direction close to the second wedge-shaped block, and the efficiency of pushing the second wedge-shaped block by the air bag is improved;
6. when the second wedge block moves towards the direction close to the first wedge block, the ratchet claw is clamped in the ratchet groove and vertically moves upwards along the ratchet groove, the ratchet claw can prevent the second wedge block from moving towards the direction far away from the first wedge block, and the ratchet claw can only vertically move upwards after being clamped in the ratchet groove, so that the stability of the second wedge block is improved, and the efficiency and the stability of the safety tongs structure for braking the car are improved;
7. elastic clamping piece joint in first spout, one of them of second spout, improves the extrusion force between second wedge and the guide rail, and then stops first wedge fast to stop the car system fast.
Drawings
Fig. 1 is a schematic structural view of a first wedge block and a second wedge block which are connected to a lift car through connecting pieces and a fixing piece which keep one end of the first wedge block and one end of a guide rail parallel and the distance between the two ends is constant;
FIG. 2 is a side view of the present invention;
fig. 3 is a schematic structural view of a second wedge block in the present invention.
In the figure: 1-a first wedge-shaped block, 11-a needle row, 2-a second wedge-shaped block, 21-a linkage plate, 22-a lifting rod, 23-an elastic clamping block, 24-a ratchet claw, 3-a car, 31-a first hinge shaft, 4-a guide rail, 41-a first sliding groove, 42-a ratchet groove, 51-a first roller, 52-a first rotating shaft, 53-a first bearing, 54-a second bearing, 55-a first connecting rod, 56-a second connecting rod, 57-a third connecting rod, 58-a fourth connecting rod, 61-a first supporting plate, 62-a second hinge shaft, 63-a buffer cylinder, 64-a first spring, 65-a second supporting plate, 71-an airbag sensor, 72-a second spring, 73-a containing box and 74-an electronic controller, 75-gas generator, 76-air bag and 77-limit plate.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, 2 and 3, the elevator safety gear structure in this embodiment is used to stop the car 3 on the guide rail 4 when the suspension rope is broken or the car 3 is overspeed, and includes a first wedge block 1, a roller row 11 disposed at the lower end of the inner side of the first wedge block 1, a second wedge block 2 disposed at the lower end of the roller row 11, a lifting rod 22 disposed at the upper end of the second wedge block 2, a fixing member for keeping one end of the first wedge block 1 parallel to one end of the guide rail 4 and keeping the distance between the two ends unchanged, a connecting member for respectively rotatably connecting the other end of the first wedge block 1 and the second wedge block 2 to the car 3, and an expansion extrusion member for expanding and extruding the lower end of the second wedge block 2 by the impact of the lower end of the car 3 so that the second wedge block 2 moves toward the direction close to the first wedge block 1.
Here, the fixing part keeps one end of the first wedge block 1 parallel to one end of the guide rail 4 and keeps the distance between the two ends unchanged, so that the situation that the first wedge block 1 inclines to be unfavorable for the second wedge block 2 to extend between the first wedge block 1 and the guide rail 4 to stop the first wedge block 1 is avoided, the car 3 is conveniently and quickly stopped, the connecting part respectively rotatably connects the other end of the first wedge block 1 and the second wedge block 2 to the car 3, so that the car 3 is conveniently pulled when the first wedge block 1 is kept parallel to one end of the guide rail 4, when a suspension rope is broken or the car 3 is ultrasonically welded, the lifting rod 22 pulls the second wedge block 2 to move towards the direction close to the first wedge block 1, the expansion wedge extrusion part is impacted by the lower end of the car 3 to expand and extrude the lower end of the second wedge block 2 so that the second wedge block 2 moves towards the direction close to the first wedge block 1, so as to accelerate the second wedge block 2 to move towards the direction of the first wedge block 1, the efficiency of stopping the car 3 is improved.
The first wedge-shaped block 1 can comprise 2 symmetrically arranged at two ends of the guide rail 4, the number of the second wedge-shaped blocks 2 is equal to that of the first wedge-shaped blocks 1, the first wedge-shaped block further comprises linkage plates 21 respectively connected with the two second wedge-shaped blocks 2, the lifting rod 22 is connected with the linkage plates 21, the fixing piece comprises a first chute 41 used for being arranged at one end of the guide rail 4, a second chute arranged at the other end of the guide rail 4, a first roller 51 arranged in the first chute 41, a second roller arranged in the second chute, a first rotating shaft 52 arranged in the middle of the first roller 51, a first bearing 53 sleeved at one end of the first rotating shaft 52, a second bearing 54 sleeved at the other end of the first rotating shaft 52, a first connecting rod 55 with one end connected with the outer ring of the first bearing 53, a second connecting rod 56 with one end connected with the outer ring of the second bearing 54, and a third connecting rod 57, two ends of which are respectively connected with the other ends of the first connecting rod 55 and the second connecting rod 56, The two ends of the fourth connecting rod 58 are connected to the third connecting rod 57 and the upper end of the outer side wall of one first wedge block 1 respectively, the second rotating shaft is arranged in the middle of the second roller wheel, the third bearing is sleeved at one end of the second rotating shaft, the fourth bearing is sleeved at the other end of the second rotating shaft, one end of the fifth connecting rod is connected to the outer ring of the third bearing, one end of the sixth connecting rod is connected to the outer ring of the fourth bearing, the two ends of the seventh connecting rod are connected to the other end of the fifth connecting rod and the other end of the sixth connecting rod respectively, and the two ends of the eighth connecting rod are connected to the other end of the seventh connecting rod and the upper end of the outer side wall of the other first wedge block 1 respectively. The first roller 51 rolls in the first sliding groove 41, the second roller rolls in the second sliding groove, and one ends of the 2 first wedge-shaped blocks 1 are kept parallel to one end of the guide rail 4, so that the first wedge-shaped blocks 1 are prevented from inclining, and meanwhile, the first wedge-shaped blocks 1 can conveniently move up and down relative to the guide rail 4 when moving up and down along with the car 3.
The center line of the fourth link 58, the center line of the third link 57, and the center line of the first roller 51 may coincide, and the center line of the eighth link, the center line of the seventh link, and the center line of the second roller may coincide. The first roller 51 and the second roller have the same shape, the first sliding groove 41 and the second sliding groove have the same shape, the first rotating shaft 52 and the second rotating shaft have the same shape, the first connecting rod 55, the second connecting rod 56, the fifth connecting rod and the sixth connecting rod have the same shape, the fifth connecting rod and the sixth connecting rod are perpendicular to the second sliding groove, the first connecting rod 55 and the second connecting rod 56 are perpendicular to the first sliding groove 41, the third connecting rod 57 is parallel to the first sliding groove 41, the seventh connecting rod is parallel to the second sliding groove, the fourth connecting rod 58 is parallel to one end of the guide rail 4, the eighth connecting rod is parallel to the other end of the guide rail 4, the fourth connecting rod 58 and the eighth connecting rod have the same shape, and the heights of the fourth connecting rod 58 and the eighth connecting rod are the same so that the two first wedge blocks 1 are kept parallel.
The connecting piece can include a first supporting plate 61 fixed at the other end of the first wedge-shaped block 1, a first hinge shaft 31 with one end rotatably connected to the car 3, a second hinge shaft 62 with one end rotatably connected to the first supporting plate 61, a second supporting plate 65 fixed on the second wedge-shaped block 2, a buffer cylinder 63 with two ends respectively connected to the first supporting plate 61 and the second supporting plate 65, and a first spring 64 sleeved on the buffer cylinder 63, wherein the first hinge shaft 31 is hinged to the second hinge shaft 62. First backup pad 61 is fixed in first wedge 1, first hinge 31 rotates and connects in car 3, second hinge 62 rotates and connects in first backup pad 61, first hinge 31 articulates in second hinge 62, first wedge 1 just rotates and connects in car 3 like this, make things convenient for first wedge 1 to stop car 3 on guide rail 4, second backup pad 65 is fixed in on second wedge 2, buffer cylinder 63 and first spring 64 set up respectively between first backup pad 61 and second backup pad 65, the realization sets up second wedge 2 on first wedge 1, buffer cylinder 63 and first spring 64 can take place to shake when extrudeing second wedge 2 in first wedge 1 and carry out the shock attenuation for second wedge 2 simultaneously.
The width of the first wedge block 1 may be equal to the width of the second wedge block 2, the first support plate 61 is perpendicular to the first wedge block 1, and the second support plate 65 is parallel to the first support plate 61.
The expansion extrusion member may include an air bag 76 connected to a lower end of the second wedge block 2, a receiving box 73 connected to the air bag 76, and a second spring 72 having both ends connected to a lower end of the car 3 and the receiving box 73, respectively, the receiving box 73 including an air bag 76 sensor 71, an electronic controller 74, and a gas generator 75 provided at a lower end of the car 3; the gas generator 75 is connected to the air bag 76, the sensor 71 of the air bag 76 sends a collision signal to the electronic controller 74 when the car 3 collides, the electronic controller 74 controls the gas generator 75 to inflate the air bag 76 when receiving the collision signal sent by the sensor 71 of the air bag 76, and the inflation of the air bag 76 pushes the second wedge block 2 to move towards the direction close to the first wedge block 1. When a suspension rope is broken or the speed of the car 3 is higher than that of the accommodating box 73 when the car 3 is overspeed, the car 3 compresses the second spring 72 to further impact the air bag 76 sensor 71, the air bag 76 sensor 71 sends an impact signal to the electronic controller 74 when being impacted by the car 3, the electronic controller 74 controls the gas generator 75 to inflate the air bag 76 when receiving the impact signal sent by the air bag 76 sensor 71, the inflation and expansion of the air bag 76 push the second wedge block 2 to move towards the direction close to the first wedge block 1, so that the second wedge block 2 is pushed to move towards the direction close to the first wedge block 1 in an accelerating way, the speed of the car 3 on the guide rail 4 by the safety gear structure is accelerated, and the braking efficiency of the safety gear structure is improved.
The receiving box 73 may have a limiting plate 77 at one end thereof for stopping the airbag 76, and the limiting plate 77 may be disposed at a lower end of the airbag 76. The limiting plate 77 is disposed at one end of the accommodating box 73, and can stop the air bag 76 after the air bag 76 is inflated, so that the air bag 76 expands toward the direction close to the second wedge block 2, and the efficiency of the air bag 76 pushing the second wedge block 2 is improved.
The guide rail 4 can be provided with a ratchet groove 42, the inner side wall of the second wedge block 2 is hinged with a ratchet claw 24, and the ratchet claw 24 moves vertically upwards along the ratchet groove 42 when the second wedge block 2 moves vertically upwards. When the second wedge block 2 moves towards the direction close to the first wedge block 1, the ratchet claw 24 is clamped in the ratchet groove 42, the ratchet claw 24 vertically moves upwards along the ratchet groove 42, the ratchet claw 24 can prevent the second wedge block 2 from moving towards the direction far away from the first wedge block 1, the ratchet claw 24 is clamped in the ratchet groove 42 and then can only vertically move upwards, the stability of the second wedge block 2 is improved, and the efficiency and the stability of the safety tongs structure for braking the car 3 are improved.
The central line of the first sliding groove 41 and the central line of the second sliding groove can coincide with the central line of the guide rail 4, the central line of the first wedge block 1 and the central line of the second wedge block 2 coincide with the central line of the guide rail 4, the ratchet groove 42 comprises 2 blocks symmetrically arranged at two ends of the first sliding groove 41 and 2 blocks symmetrically arranged at two ends of the second sliding groove, and the ratchet claw 24 can comprise 2 blocks symmetrically arranged at the central line of one second wedge block 2 and 2 blocks symmetrically arranged at the central line of the other second wedge block 2.
The middle part of the second wedge-shaped block 2 is convexly provided with an elastic clamping block 23 clamped in one of the first sliding groove 41 and the second sliding groove, and the thickness of the elastic clamping block 23, the thickness of the first sliding groove 41 and the thickness of the second sliding groove are equal. Elastic clamping block 23 is clamped in one of first chute 41 and the second chute, so that the extrusion force between second wedge block 2 and guide rail 4 is improved, and first wedge block 1 is rapidly stopped, and car 3 is rapidly stopped. Elastic clamping piece 23 can be rubber clamping piece, improves the frictional force between second wedge 2 and the guide rail 4, stops first wedge 1 fast to stop car 3 system fast.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. An elevator safety gear structure for braking a car (3) on a guide rail (4) when a suspension rope is broken or the car (3) is overspeed, characterized in that: the elevator car wedge-shaped device comprises a first wedge-shaped block (1), a needle bar (11) arranged at the lower end of the inner side of the first wedge-shaped block (1), a second wedge-shaped block (2) arranged at the lower end of the needle bar (11), a lifting rod (22) arranged at the upper end of the second wedge-shaped block (2), a fixing piece used for keeping one end of the first wedge-shaped block (1) parallel to one end of a guide rail (4) and keeping the distance between the two ends unchanged, a connecting piece used for respectively connecting the other end of the first wedge-shaped block (1) and the second wedge-shaped block (2) to a car (3) in a rotating manner, and an expansion extrusion piece used for expanding and extruding the lower end of the second wedge-shaped block (2) under the impact of the lower end of the car (3) so that the second wedge-shaped block (2) moves towards the direction close to the first wedge-shaped block (1); first wedge (1) sets up in 2 at guide rail (4) both ends including the symmetry, the figure of second wedge (2) and the figure of first wedge (1) are equal, still including connecting in linkage plate (21) of two second wedges (2) respectively, it connects in linkage plate (21) to carry pull rod (22), the mounting is including being used for setting up in first spout (41) of guide rail (4) one end, setting up the second spout of guide rail (4) other end, setting up first gyro wheel (51) in first spout (41), setting up the second gyro wheel in the second spout, setting up in first pivot (52) at first gyro wheel (51) middle part, cup joint in first bearing (53) of first pivot (52) one end, cup joint in second bearing (54) of first pivot (52) other end, one end connects in first connecting rod (55) of the outer lane of first bearing (53), A second connecting rod (56) with one end connected to the outer ring of the second bearing (54), a third connecting rod (57) with two ends connected to the other end of the first connecting rod (55) and the other end of the second connecting rod (56) respectively, a fourth connecting rod (58) with two ends connected to the third connecting rod (57) and the outer side wall upper end of a first wedge-shaped block (1) respectively, a second rotating shaft arranged in the middle of the second roller, a third bearing sleeved on one end of the second rotating shaft, a fourth bearing sleeved on the other end of the second rotating shaft, a fifth connecting rod with one end connected to the outer ring of the third bearing, a sixth connecting rod with one end connected to the outer ring of the fourth bearing, a seventh connecting rod with two ends connected to the other end of the fifth connecting rod and the other end of the sixth connecting rod respectively, and an eighth connecting rod with two ends connected to the other end of the seventh connecting rod and the outer side wall upper end of another first wedge-shaped block (1) respectively.
2. The elevator safety gear structure according to claim 1, characterized in that: the center line of the fourth connecting rod (58), the center line of the third connecting rod (57) and the center line of the first roller (51) are overlapped, and the center line of the eighth connecting rod, the center line of the seventh connecting rod and the center line of the second roller are overlapped.
3. An elevator safety gear structure as defined in claim 1 or 2, wherein: the connecting piece is including first backup pad (61), one end that are fixed in first wedge (1) the other end rotate to be connected in first hinge (31) of car (3), one end rotate to be connected in second hinge (62) of first backup pad (61), be fixed in second backup pad (65) on second wedge (2), both ends are connected respectively in buffer cylinder (63) of first backup pad (61) and second backup pad (65), cup joint in first spring (64) of buffer cylinder (63), first hinge (31) articulate in second hinge (62).
4. An elevator safety gear structure as defined in claim 3, wherein: the width of first wedge (1) equals the width of second wedge (2), first backup pad (61) is perpendicular to first wedge (1), second backup pad (65) is on a parallel with first backup pad (61).
5. An elevator safety gear structure as defined in claim 3, wherein: the expansion extrusion part comprises an air bag (76) connected to the lower end of the second wedge-shaped block (2), an accommodating box (73) connected to the air bag (76), and a second spring (72) with two ends respectively connected to the lower end of the lift car (3) and the accommodating box (73), and the accommodating box (73) comprises an air bag (76) sensor (71) arranged at the lower end of the lift car (3), an electronic controller (74) and a gas generator (75); the gas generator (75) is connected to the air bag (76), the sensor (71) of the air bag (76) sends a collision signal to the electronic controller (74) when the air bag (76) is collided by the car (3), the electronic controller (74) controls the gas generator (75) to inflate the air bag (76) when receiving the collision signal sent by the sensor (71) of the air bag (76), and the inflation and expansion of the air bag (76) push the second wedge block (2) to move towards the direction close to the first wedge block (1).
6. An elevator safety gear structure as defined in claim 5, wherein: one end of the accommodating box (73) is provided with a limiting plate (77) for stopping the air bag (76), and the limiting plate (77) is arranged at the lower end of the air bag (76).
7. An elevator safety gear structure as defined in claim 4, wherein: the guide rail (4) is provided with a ratchet groove (42), the inner side wall of the second wedge-shaped block (2) is hinged with a ratchet claw (24), and the ratchet claw (24) vertically moves upwards along the ratchet groove (42) when the second wedge-shaped block (2) vertically moves upwards.
8. An elevator safety gear structure as defined in claim 7, wherein: the central line of first spout (41) and second spout all coincides with the central line of guide rail (4), the central line of first wedge (1) and second wedge (2) all coincides with the central line of guide rail (4), ratchet groove (42) including the symmetry set up in 2 at first spout (41) both ends with the symmetry set up in 2 at second spout both ends, ratchet claw (24) including the central line 2 of a second wedge (2) of symmetry and 2 of the central line of another second wedge (2).
9. The elevator safety gear structure according to claim 8, characterized in that: the middle part of the second wedge-shaped block (2) is convexly provided with an elastic clamping block (23) which is clamped in one of the first sliding groove (41) and the second sliding groove, and the thickness of the elastic clamping block (23), the thickness of the first sliding groove (41) and the thickness of the second sliding groove are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN210193117U (en) * | 2019-07-11 | 2020-03-27 | 广州花都通用集团有限公司 | Elevator safety tongs |
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| CN101575062A (en) * | 2009-05-18 | 2009-11-11 | 杭州沪宁电梯配件有限公司 | Asymmetric progressive safety gear |
| CN104936881A (en) * | 2013-01-17 | 2015-09-23 | 奥的斯电梯公司 | Enhanced deceleration propulsion system for elevators |
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