CN2773029Y

CN2773029Y - Bi-directional overspeed protector of elevator

Info

Publication number: CN2773029Y
Application number: CN 200520054923
Authority: CN
Inventors: 陈汉昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-22
Filing date: 2005-02-22
Publication date: 2006-04-19
Anticipated expiration: 2015-02-22

Abstract

The utility model relates to a bidirectional overspeed protector of an elevator, which comprises a rope clamping device, a bidirectional speed limiting device and a tracing pendant, wherein the rope clamping device is composed of a frame body, two energy storage spring mechanisms, a braking frame which drives a braking plate, a fixed braking plate and an uncoupling mechanism, and the tracing pendant is connected to the position between the rope clamping device and the bidirectional speed limiting device. The utility model is characterized in that a wedge-shaped braking plate is arranged between a movable braking plate of the braking frame and the fixed braking plate of the braking frame, the wedge-shaped braking plate can form an upwards sliding braking between the fixed braking plate and the movable braking plate, a wedge-shaped face is correspondingly arranged on the movable braking plate of the braking frame, and the wedge-shaped face is mutually matched with the wedge-shaped braking plate for braking. In the process that a clamp rope carries out braking, when the wedge-shaped braking plate is driven by the movable braking plate to inwards clamps and presses a dragging cable wire, and meanwhile, under the drive of the friction of the dragging cable wire, the clamping rode device make the wedge-shaped braking plate move upwards by effectively utilizing the mutual cooperation of the wedge-shaped braking plate and the wedge-shaped face of the movable braking plate. The dragging cable wire is clamped tightly and tightly, the purposes of reliable braking, good braking effect and high safety performance are achieved.

Description

A kind of bidirection overspeed protective device of elevator

Technical field

The utility model relates to a kind of lift running safety fender guard, the two-way hypervelocity safety guard of particularly a kind of elevator.

Background technology

Existing bidirection overspeed protective device of elevator generally is made up of rope gripper, two-way speed limiting device and the tricing line that is connected between the two, as Chinese patent ZL02263084.8 disclosed a kind of " bidirection overspeed protective device of elevator ".Its rope gripper generally by support body and be installed on two energy-storaging spring mechanisms on the support body, have moving slipper brake bracket, decide parts such as slipper, uncoupling rigging and form, wherein, two energy-storaging spring mechanism arrangement are in the support body inner bottom part, and the top of two energy-storaging spring mechanisms links together by a bearing pin, and these bearing pin both ends are set in the waist shaped hole that the support body biside plate is provided with; Brake bracket then the upper and lower supporting arm device by being arranged on support body two lateral surfaces on the end of support body, and by being arranged on support body two lateral surfaces and two coupled arms that be connected with the bearing pin two ends and being connected with two energy-storaging spring mechanisms; The work of deciding on the end face that slipper then is fixed on support body accordingly to match with moving slipper on the brake bracket; And uncoupling rigging and install in the support body at two energy-storaging spring mechanism rears and link to each other with the two-way speed limiting device to fetch and control and trigger two energy-storaging spring mechanism actions by a tricing line, and then the moving slipper that reaches the control brake frame with decide the traction steel-cable of slipper and clamp brake lift car.Yet; the braking brake that lift car traction steel-cable when the rope gripper of this structure owing to only adopt simply decide slipper and moving slipper to the generation overspeed clamps immediately; and when unusual overspeed takes place elevator; in actual braking brake process; this one-sided braking brake mode is as easy as rolling off a logly to produce the impact of coherence impulsive force during by the lift car overspeed and produce the phenomenon of brake slip or brake failure; thereby cause the whole protecting failure of apparatus, cause the safety misadventure generation that lift car is rushed to summit or weighed down ladder.Its two-way speed limiting device then reaches the rope sheave, fixed friction wheel, the friction that are installed in regular turn on the stake body by stake body and takes turns, installs centrifugal film and lobe, amount of compression control apparatus, limit switch actuating mechanism and the coupled component set-ups such as limit switch of device on centrifugal film in the rope sheave two sides, make the structure of its whole speed-limit device very complicated, manufacturing cost is high, thereby cause problems such as rate of breakdown height, maintenance cost height.

Summary of the invention

The purpose of this utility model is to provide a kind of can guarantee effectively that elevator overspeed safe in operation, drag are effective, and rational in infrastructure, simple, the two-way hypervelocity safety guard of the elevator that rate of breakdown is low, maintenance cost is low.

The technical solution of the utility model is achieved in that

A kind of bidirection overspeed protective device of elevator; comprise by support body, two energy-storaging spring mechanisms, drive slipper brake bracket, decide rope gripper, the two-way speed limiting device that slipper, uncoupling rigging form and be connected in rope gripper and the two-way speed limiting device between tricing line; its characteristics are the moving slipper of described brake bracket and decide to be provided with between the slipper wedge shape slipper that can form the drag that upwards slides between two slippers, and be provided with the lozenges that cooperatively interacts and brake with the wedge shape slipper accordingly on the moving slipper of brake bracket.

Of the present utility model rational in infrastructure, simple for making, it is comparatively convenient to make and assemble, above-mentioned wedge shape slipper comprises the wedge shape adapter plate and is installed on brake shoe plate on the wedge shape adapter plate, wherein, described wedge shape adapter plate middle part is provided with the guide pillar that is used to install the wedge shape slipper, be provided with the bar shaped pilot hole that can install and slide up and down for guide pillar on the above-mentioned brake bracket accordingly, described wedge shape slipper places by its guide pillar and is installed in the bar shaped pilot hole and can upper and lowerly installs on brake bracket slidably.

For above-mentioned uncoupling rigging is active in one's movements, reliably, and it is simple in structure, rationally and make things convenient for hand reset, above-mentioned uncoupling rigging comprises the unhook arm, the eccentric wheel of band handle, wherein, described unhook arm top is provided with a unhook button bit, and its bottom is provided with and can places the bonded assembly connecting bore for tricing line, a described eccentric wherein side is provided with the unhook post of the work that matches with the button bit that breaks off relations accordingly, described unhook arm is installed on support body swingably by a bearing pin that passes its top, and by be connected in its bottom connecting bore tricing line and be connected with above-mentioned two-way speed limiting device, described eccentric wheel is installed on the support body of the top between the two energy-storaging spring mechanisms swingably by the bearing pin that passes the perforation which is provided with, and latches in by its unhook post on the unhook button bit of unhook arm and realize its compressing accumulation of energy to two energy-storaging spring mechanisms.

The utility model is owing to adopt deciding to be provided with between slipper and the moving slipper wedge shape slipper that can form the drag that upwards slides between it and moving and be provided with accordingly on the slipper and the cooperatively interact structure of the lozenges braked of wedge shape slipper at rope gripper, make rope gripper of the present utility model exceed in the folder rope drag process of the command speed operation that the two-way speed limiting device sets at lift car, moving slipper drive the wedge shape slipper toward the traction steel-cable of interior cramping lift car under traction steel-cable friction drive, make wedge shape slipper upward movement clamp traction steel-cable, and effectively utilize the cooperatively interacting of lozenges of wedge shape slipper and moving slipper, make the wedge shape slipper press from both sides tighter and tighter to traction steel-cable, thereby it is reliable to reach drag, good braking effect, the purpose that safety performance is high, and also effectively reach and prevent to occur skidding in the drag process or the drag failure phenomenon, and then guarantee elevator safety comprehensively, the effect of reliability service.Owing to adopt the uncoupling rigging structure of forming by the eccentric wheel of unhook arm, band handle, make the utility model behind drag again, need could recover normal operation by resetting manually.Thereby after avoiding traction steel-cable to be braked effectively,, reach and guarantee the elevator safety performance further and make the utility model more meet the effect of country the safety requirements of special equipment because of the phenomenon that dropped again by the car action of gravity.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the Facad structure scheme drawing of the utility model rope gripper.

Fig. 3 is the left apparent direction structural representation of the rope gripper of the utility model Fig. 2.

Fig. 4 is the right apparent direction structural representation of the rope gripper of the utility model Fig. 2.

The specific embodiment

As shown in Figures 1 to 4; a kind of bidirection overspeed protective device of elevator described in the utility model, it comprise by support body 11, two energy-storaging spring mechanisms 12, drive slipper 131 brake bracket 13, decide rope gripper 1, the two-way speed limiting device 2 that slipper 14, uncoupling rigging 15 form and be connected in rope gripper 1 and two-way speed limiting device 2 between tricing line 3.For effectively solve the existing braking of existing rope gripper unreliable, be easy to generate problems such as brake slip or brake failure, the moving slipper 131 of brake bracket 13 described in the utility model and decide to be provided with the wedge shape slipper 4 that can between two slippers, form the drag that upwards slides between the slipper 14, and on the moving slipper 131 of brake bracket 13, be provided with accordingly and the cooperatively interact lozenges 132 of braking of wedge shape slipper 4.Like this, make rope gripper 1 of the present utility model exceed in the folder rope drag process of the command speed operation that two-way speed limiting device 2 sets at lift car, moving slipper 131 drive the wedge shape slippers toward the traction steel-cable 50 of interior cramping lift car under traction steel-cable 50 friction drives, make wedge shape slipper 4 upward movements clamp traction steel-cable 50, and effectively utilize the cooperatively interacting of lozenges 132 of wedge shape slipper 4 and moving slipper 131, it is tight more that 4 pairs of traction steel-cables 50 of wedge shape slipper are pressed from both sides more, thereby it is reliable to reach drag, good braking effect, the purpose that safety performance is high, and also effectively reach and prevent to occur skidding in the drag process or the drag failure phenomenon, and then guarantee elevator safety comprehensively, the effect of reliability service.Of the present utility model rational in infrastructure for making, simply, it is comparatively convenient to make and assemble, Fig. 1 and for example, Fig. 2 and shown in Figure 3, above-mentioned wedge shape slipper 4 comprises wedge shape adapter plate 41 and is installed on brake shoe plate 42 on the wedge shape adapter plate 41, wherein, described wedge shape adapter plate 41 middle parts are provided with the guide pillar 411 that is used to install wedge shape slipper 4, be provided with the bar shaped pilot hole 132 that can install and slide up and down for guide pillar 411 on the above-mentioned brake bracket 13 accordingly, described wedge shape slipper 4 places by its guide pillar 411 and is installed in the bar shaped pilot hole 132 and can goes up, lower slider ground device is on brake bracket 13.For above-mentioned uncoupling rigging 15 is active in one's movements, reliably, and it is simple in structure, rationally and make things convenient for hand reset, as Fig. 1, Fig. 2 and shown in Figure 4, above-mentioned uncoupling rigging 15 comprises unhook arm 151, the eccentric wheel 155 of band handle 154, wherein, described unhook arm 151 tops are provided with a unhook button bit 152, and its bottom is provided with and can places bonded assembly connecting bore 153 for tricing line 3, a wherein side of described eccentric wheel 155 is provided with the unhook post 156 of the work that matches with the button bit 152 that breaks off relations accordingly, described unhook arm 151 is installed on support body 11 swingably by a bearing pin 16 that passes its top, and by be connected in its bottom connecting bore 153 tricing line 3 and be connected with above-mentioned two-way speed limiting device 2, described eccentric wheel 155 is installed on the support body 11 of the top between the two energy-storaging spring mechanisms 12 swingably by the bearing pin 17 that passes the perforation which is provided with, and latches in by its unhook post 156 on the unhook button bit 152 of unhook arm 151 and realize its compressing accumulation of energy to two energy-storaging spring mechanisms 12.Make the utility model behind drag, need be by dialling down manually the handle 154 on the eccentric wheel 155, make eccentric wheel 155 depress two energy-storaging spring mechanisms 12, make two energy-storaging spring mechanisms 12 reply energy accumulating state, and unhook post 156 on the eccentric wheel 155 is buckled on the unhook button bit 152 on the unhook arm 151, brake bracket 13 is unclamped, make traction steel-cable 50 recover normal operation.Thereby after avoiding traction steel-cable 50 to be braked effectively,, reach and guarantee the elevator safety performance further and make the utility model more meet the effect of country the safety requirements of special equipment because of the phenomenon that dropped again by the car action of gravity.Again in order effectively to solve existing two-way speed limiting device owing to structure is very complicated, the rate of breakdown height that the manufacturing cost height is brought, the problem that maintenance cost is high, as shown in Figure 1, above-mentioned two-way speed limiting device 2 comprises stake body 21, rope sheave 22, two-way gear 23, above-below direction master cock 24, silicon pawl 25, two centrifugal hammers 26 and by erecting frame 5 and be installed on the armshaft 6 on the erecting frame 5 and be installed on spring 7 on the armshaft 6, the two brake control mechanisms 27 that setting nut 8 is formed, 28, wherein, described stake body 21 is provided with the fixed mount 10 that is used to install above-below direction master cock 24, a wherein side of described two-way gear 23 is provided with and is used for the guide bolt 231 that is connected with armshaft 6, the bottom of described armshaft 6 is provided with accordingly and can places bonded assembly arcuate socket 61 for guide bolt 231, described rope sheave 22, two-way gear 23 passes through a main shaft 20 coaxial devices on stake body 21, described silicon pawl 25 is installed on stake body 21 inboards, described two centrifugal hammers 26 are installed on respectively on the stake body 21 of rope sheave 22 both sides, described two

brake control mechanisms

27,28 are installed on respectively on stake body 21 two ends by erecting frame 5, and by the arcuate socket 61 on the guide bolt 231 that is placed on two-way gear 23 and regulate the setting nut 8 be spun on the armshaft 6 and at a certain angle lean-in tiltedly install on stake body 21 and described two brake control mechanisms 27, be respectively equipped with the cord-pressing block 9 of guaranteeing elevator down direction safety on 28 the erecting frame 5 and can discharge attachment point 30 for the static supporting of tricing line 3 bonded assemblys.Thereby make of the present utility model rational in infrastructurely, simple, manufacturing cost is lower, makes that its fault rate also reduces greatly, safety performance is improved further, and maintenance cost is effectively reduced.

The utility model drag principle is such: when the above-below direction master cock 24 on the two-way speed limiting device 2 detects on rope sheave 22 speed uplink of steel rope of detouring and exceeded the command speed operation that two-way speed limiting device 2 sets, the modulated centrifugal hammer of establishing 26 of two-way speed limiting device 2 both sides is run into the electric switch on the two-way speed limiting device 2, block the running power supply of elevator, silicon pawl 25 is toward two-way gear 23 actions simultaneously, driving brake control mechanism 28 leans on for 22 li toward rope sheave, control tricing line 3 loses supporting power from quiescence, the unhook post 156 moments unhook of the unhook button bit 152 of pulling unhook arm 151 and eccentric wheel 155, two energy-storaging spring mechanisms 12 are released energy drive brake bracket 13 toward interior action, make wedge shape slipper 4 clamp traction steel-cable 50, simultaneously under traction steel-cable 50 frictions drive, cooperatively interacting of lozenges 132 by wedge shape slipper 4 and moving slipper 131, it is tight more that 4 pairs of traction steel-cables 50 of wedge shape slipper are pressed from both sides more, forces elevator to stop.Thereby reach that drag is reliable, good braking effect, purpose that safety performance is high.And when the above-below direction master cock 24 on the two-way speed limiting device 2 detects on rope sheave 22 downstream rate of steel rope of detouring and exceeded the command speed operation that two-way speed limiting device 2 sets, silicon pawl 25 is toward two-way gear 23 actions, driving brake control mechanism 27 leans on for 22 li toward rope sheave, press toward rope sheave 22 by cord-pressing block 9, guarantee the safety tongs action of elevator down direction and cut off working power, force elevator to stop.When elevator recovers just often, handle 154 under manually dialling on the eccentric wheel 155, depress two energy-storaging spring mechanisms 12, with unhook button bit 152 fasteners on unhook post on the eccentric wheel 155 156 and the unhook arm 151, wedge shape slipper 4 and brake bracket 13 unclamp traction steel-cable 50, recover armed state, elevator also gets final product normal operation.

Claims

1; a kind of bidirection overspeed protective device of elevator; comprise by support body (11); two energy-storaging spring mechanisms (12); drive the brake bracket (13) of slipper (131); decide slipper (14); the rope gripper (1) that uncoupling rigging (15) is formed; two-way speed limiting device (2) and be connected in rope gripper (1) and two-way speed limiting device (2) between tricing line (3); it is characterized in that the moving slipper (131) of described brake bracket (13) and decide to be provided with between the slipper (14) the wedge shape slipper (4) that can between two slippers, form the drag that upwards slides, and on the moving slipper (131) of brake bracket (13), be provided with the lozenges (132) that cooperatively interacts and brake with wedge shape slipper (4) accordingly.

2; according to the described bidirection overspeed protective device of elevator of claim 1; it is characterized in that above-mentioned wedge shape slipper (4) comprises wedge shape adapter plate (41) and is installed on brake shoe plate (42) on the wedge shape adapter plate (41); wherein; described wedge shape adapter plate (41) middle part is provided with the guide pillar (411) that is used to install wedge shape slipper (4); be provided with the bar shaped pilot hole (132) that can supply guide pillar (411) to install and slide up and down on the above-mentioned brake bracket (13) accordingly, described wedge shape slipper (4) places by its guide pillar (411) and is installed in the bar shaped pilot hole (132) and can goes up; lower slider ground device is on brake bracket (13).

3; according to the described bidirection overspeed protective device of elevator of claim 1; it is characterized in that above-mentioned uncoupling rigging (15) comprises unhook arm (151); the eccentric wheel (155) of band handle (154); wherein; described unhook arm (151) top is provided with a unhook button bit (152); and its bottom is provided with and can supplies tricing line (3) to place bonded assembly connecting bore (153); a wherein side of described eccentric wheel (155) is provided with the unhook post (156) of the work that matches with the button bit that breaks off relations (152) accordingly; described unhook arm (151) is installed on support body (11) swingably by a bearing pin (16) that passes its top; and by be connected in its bottom connecting bore (153) tricing line (3) and be connected with above-mentioned two-way speed limiting device (2); described eccentric wheel (155) is installed on the support body (11) of the top between the two energy-storaging spring mechanisms (12) swingably by the bearing pin (17) that passes the perforation which is provided with, and goes up by the unhook button bit (152) that its unhook post (156) latches in unhook arm (151) and to realize its compressing accumulation of energy to two energy-storaging spring mechanisms (12).

4; according to claim 1 or 2 or 3 described bidirection overspeed protective device of elevator; it is characterized in that above-mentioned two-way speed limiting device (2) comprises stake body (21); rope sheave (22); two-way gear (23); above-below direction master cock (24); silicon pawl (25); two centrifugal hammers (26) and by erecting frame (5) and be installed on the armshaft (6) on the erecting frame (5) and be installed on spring (7) on the armshaft (6); the two brake control mechanisms (27 that setting nut (8) is formed; 28); wherein; described stake body (21) is provided with the fixed mount (10) that is used to install above-below direction master cock (24); a wherein side of described two-way gear (23) is provided with and is used for the guide bolt (231) that is connected with armshaft (6); the bottom of described armshaft (6) is provided with accordingly and can supplies guide bolt (231) to place bonded assembly arcuate socket (61); described rope sheave (22); two-way gear (23) passes through a main shaft (20) coaxial device on stake body (21); described silicon pawl (25) is installed on stake body (21) inboard; described two centrifugal hammers (26) are installed on respectively on the stake body (21) of rope sheave (22) both sides; described two brake control mechanisms (27; 28) be installed on respectively on stake body (21) two ends by erecting frame (5); and by the arcuate socket (61) on the guide bolt (231) that is placed on two-way gear (23) and regulate the setting nut (8) be spun on the armshaft (6) and at a certain angle lean-in tiltedly install on stake body (21) and described two brake control mechanisms (27; 28) be respectively equipped with the cord-pressing block (9) of guaranteeing elevator down direction safety on the erecting frame (5) and can supply the static supporting of tricing line (3) bonded assembly to discharge attachment point (30).