CN211594722U

CN211594722U - Counterweight safety protection device

Info

Publication number: CN211594722U
Application number: CN201922290167.7U
Authority: CN
Inventors: 朱云凯; 徐小华; 沈皆增; 钱江; 沈虹杰
Original assignee: Yida Express Elevator Co ltd
Current assignee: Yida Express Elevator Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-29
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a to heavy safety arrangement, including setting up the synchronous lifting mechanism in the counterweight housing body upper end that has both sides upright beam, characterized by is in the counterweight housing body coexistence roof beam outside is equipped with the installation bedplate that the level was arranged respectively, is equipped with a gangbar between two installation plate seats, be equipped with the torsional spring between gangbar and the installation plate seat, the both ends of gangbar are fixed with the rotor arm respectively, and the end and the safety tongs of rotor arm are connected, simultaneously, are fixed with the pull head on the rotor arm, and the pull head both ends are passed through the go-between and are connected with overspeed governor wire rope. The whole safety gear transmission mechanism has few intermediate parts, simple structure, good synchronism of the safety gears on two sides, high transmission efficiency and sensitivity, small occupied space and convenient adjustment and maintenance during installation and maintenance.

Description

Counterweight safety protection device

Technical Field

The utility model relates to an elevator technique, especially a to heavy safety arrangement.

Background

The counterweight is a component of an elevator traction system and is used for reducing the power of a traction motor and the torque on a traction wheel and a worm gear; the counterweight device is positioned in the hoistway and is connected with the car through a traction sheave by a traction rope; in the running process of the elevator, the counterweight device slides on the counterweight guide rail through the counterweight guide shoe to play a balancing role; which in special cases is an important component in the counterweight. The existing counterweight safety device has various structural forms and different characteristic effects. For example, patent publication No. CN110526094A discloses a counterweight frame with an electronic lifting safety gear, wherein an overspeed detection and control module detects that a descending speed of the counterweight frame exceeds a set speed, and sends a trigger signal to an electromagnet, the electromagnet is triggered to be powered, and a movable armature is attracted and moves toward a main body section of the electromagnet. When the movable armature moves, the safety gear lifting plate on one side of the fixed movable armature rotates inwards to drive the safety gear on the side to lift, and the linkage rod with a fixed length can pull the safety gear lifting plate on the other side to rotate inwards along with the safety gear lifting plate to drive the safety gear on the same side to lift synchronously. The safety tongs on both sides are synchronously lifted up to stop the counterweight frame. If patent publication number is CN207861654U again, a to heavy safety tongs aggregate unit, including to heavily putting up and linkage structure, fix through fixed knot structure and to heavily putting up heavy safety tongs, fixed knot constructs, and it includes: gaskets, bolts, nuts, sleeves, gears, racks, and the like. The structure has more intermediate mechanisms, more complex structure of transmission parts, poorer sensitivity, poor installation and debugging manufacturability and higher cost.

Disclosure of Invention

The utility model aims at solving the problem, providing a simple structure, the strong sensitivity of synchronism is high, installation and debugging are convenient to heavy safety arrangement.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a to heavy safety arrangement, is including setting up the synchronous lifting mechanism in the counterweight housing body upper end that has both sides upright beam, and characterized by is in the counterweight housing body coexistence roof beam outside is equipped with the installation bedplate that the level was arranged respectively, is equipped with a gangbar between two installation bedplates, be equipped with the torsional spring between gangbar and the installation bedplate, the both ends of gangbar are fixed with the rotor arm respectively, and the end and the safety tongs of rotor arm are connected, and simultaneously, are fixed with the pull head on the rotor arm, and pull head and overspeed governor wire rope are connected.

In the counterweight safety protection device, preferably, a wedge block is arranged in the safety tongs, one end of the rotating arm is sleeved at the end part of the linkage rod, and the tail end of the rotating arm is linked with the wedge block.

In the counterweight safety protection device, preferably, the lifting head is arranged on one side of the counterweight frame body, and torsion springs with the same specification are symmetrically arranged between two ends of the linkage rod and the installation seat plate.

In the counterweight safety protection device, preferably, the lifting head is vertically arranged outside the upright beam on one side of the counterweight housing body and is fixedly connected with the rotating arm in a clamping manner.

In the counterweight safety protection device, preferably, the guide shoes are arranged at the top of the outer sides of the two vertical beams of the counterweight housing body, and the installation seat plate is horizontally arranged below the guide shoes in a clinging manner.

In the counterweight safety protection device, preferably, a fixing plate is arranged on the outer side of the safety gear, a rotating arm swinging point rotation limiting groove is formed in the fixing plate, a pin shaft penetrating through the limiting groove is arranged in a wedge block in the safety gear, and the rotating arm swinging point is hinged to the pin shaft.

In the counterweight safety protection device, preferably, the upper end and the lower end of the lifting head are provided with connecting rings, and the connecting rings are matched with the speed governor steel wire rope.

This technical scheme utilizes both sides to possess to design on the heavily putting up body of upright roof beam, and coexistence roof beam outside top is for leading the boots, hugs closely and leads the boots below and arranges the installation bedplate that the mechanism was drawn to synchronous carrying. The synchronous lifting mechanism mainly brakes the whole counterweight (the seat boards, the safety tongs and the vertical beam are connected into a whole by bolts), the device takes the installation seat boards as supports, a linkage rod capable of controlling a rotating arm is arranged between the two installation seat boards, the resetting of the linkage rod is completed by a self-configured torsion spring, the rotating arm carries out braking control on the safety tongs, a lifting head is fixed on the rotating arm at the same time, and the lifting head is controlled by a speed limiter steel wire rope. When the descending speed does not meet the safety requirement, the steel wire rope of the speed limiter immediately drives the lifting head to move upwards; the lifting head pulls the rotating arms to rotate, one end of each rotating arm is fixed with the linkage rod, and the linkage rod drives the rotating arms on the other sides to rotate simultaneously, so that the safety tongs on the two sides can be guaranteed to act simultaneously; the other end of the rotating arm is used as a swinging point and is hinged with the pin shaft, and the pin shaft is linked with the wedge block in the safety tongs, so that the friction brake of the wedge block and the guide rail is ensured, and the downward brake of the counterweight housing is realized. When the main machine drives the counterweight housing to move upwards, the steel wire rope of the speed limiter does not pull the lifting head, and the torsion spring enables the lifting rod to reset, so that the rotating arm is linked to enable the safety gear wedge block to be pressed downwards and loosened.

Furthermore, the component structure in the device is simple as the optimization, the structure is independent of the counterweight body, the large end of the rotating arm is provided with a shaft sleeve structure which is directly sleeved at the end part of the linkage rod, the other small end of the rotating arm is provided with a movable hole configured with the pin shaft, and the simple and easy-to-do condition is provided from the aspects of installation and maintenance. The lifting head of the device is arranged on one side of the vertical beam of the counterweight housing body, and the two ends of the linkage rod are provided with symmetrically arranged torsion springs with the same specification, so that the rotating arms synchronously move. Because the most direct expression of the signal of the speed governor steel wire rope is the vertical direction, the lifting head is vertically arranged and is fixed with the rotating arm by a clamping mode with enough structural strength and self-protection form.

Compared with the prior art, the beneficial effects of the utility model are that: the whole safety gear transmission mechanism has few intermediate parts, simple structure, good synchronism of the safety gears on two sides, high transmission efficiency and sensitivity, small occupied space and convenient adjustment and maintenance during installation and maintenance.

Drawings

Fig. 1 is a front view of the utility model applied to the main body of the counterweight housing.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a schematic view of the three-dimensional structure of the body state of the counterweight housing of the present invention.

Fig. 5 is a schematic view of an application state three-dimensional structure of the present invention.

Fig. 6 is a partially enlarged schematic view of fig. 5.

In the figure: 1. the counterweight housing body, 2, a lifting mechanism, 201, a linkage rod, 202, a mounting seat plate, 203, a torsion spring, 204, a safety gear, 205, a rotating arm, 206, a lifting head and 3, a rope wheel component.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

In the counterweight safety protection device of the present embodiment, as shown in fig. 1 to 4, a counterweight housing body 1 having vertical beams on two sides is used as a base, a rope pulley assembly 3 is arranged in the middle of the top of the counterweight housing body 1, guide shoes are respectively arranged on two sides of the top, a synchronous lifting mechanism 2 is arranged under the guide shoes, and the synchronous lifting mechanism 2 is located at the upper end of the counterweight housing body 1 as a whole.

The synchronous lifting mechanism 2 comprises mounting base plates 202 which are positioned outside two vertical beams of the counterweight housing body 1 and horizontally arranged, the mounting base plates 202 are mounted at the lower ends of the guide shoes, one ends of the two mounting base plates 202 horizontally extend out of one part of the counterweight housing body 1, a linkage rod 201 is horizontally arranged between the two mounting base plates 202 of the part, as shown in fig. 5 and 6, torsion springs 203 with the same specification are symmetrically sleeved at the inner side parts of the mounting base plates 202 at the two ends of the linkage rod 201, namely one ends of the torsion springs 203 are positioned on the mounting base plates 202, and the other ends of the torsion springs 203 are fixed on the linkage rod 201; two ends of the linkage rod 201 are respectively sleeved and fixed with a rotating arm 205 at the outer side part of the installation seat plate 202. In order to ensure the connection stability between the rotating arm 205 and the linkage rod 201, a shaft sleeve is arranged at one end of the rotating arm 205, which is matched with the linkage rod 201, the shaft sleeve is fixed by a column cap positioning screw, and a long waist hole is arranged at the other end of the rotating arm 205. The safety tongs 204 are internally provided with a braking wedge block, the other end, namely the tail end, of the rotating arm 205 is limited by a pin shaft through a long waist hole, one end of the pin shaft is connected with the wedge block, meanwhile, the pin shaft is positioned in a rotating limiting groove of an up-and-down movement limiting mechanism arranged on vertical beams at two sides of the counterweight housing body 1 along the lifting head 206, and the swinging point of the rotating arm is hinged with the pin shaft. Specifically, a fixed plate is arranged on the outer side of the safety gear 204, a rotation limiting groove is formed in the fixed plate, and the rotation limiting groove is designed to form an angle with the vertical direction according to the motion track of the tail end of the rotating arm 205 so as to guarantee the safety gear wedge block to brake up and down smoothly.

A pulling head 206 is fixed on the middle part of the rotating arm 205, the pulling head 206 is provided with 1 piece, is arranged on the side part of one side vertical beam of the counterweight housing body 1, and is fixedly connected with the rotating arm 205 in a clamping way.

Finally, the connecting rings (chicken heart rings) arranged at the upper end and the lower end of the lifting head 206 are matched with the speed governor steel wire rope for installation.

And (3) working and braking: the speed limiter steel wire rope pulls the lifting head 206 to move upwards, the lifting head 206 drives the rotating arm 205 to rotate, the rotating arm 205 drives the linkage rod 201 to rotate, and the linkage rod 201 simultaneously drives the rotating arm 205 on the other side to rotate, so that the wedges of the safety tongs 204 on two sides are ensured to be lifted upwards synchronously, the wedges of the safety tongs 204 are ensured to be stopped with the guide rail, and the downward braking of the counterweight housing is realized.

And (3) work resetting: the host computer drives counterweight housing and goes upward, and linkage rod 201 is rotatory under the effect of reset torsion spring 203 to drive both sides rotor arm 205 clockwise turning, make safety tongs 204 voussoir push down, and the voussoir breaks away from the guide rail, and the safety tongs resets, counterweight housing normal operating.

The above embodiments are descriptions of the present invention, not limitations of the present invention, and any structure after simple transformation is all included in the protection scope of the present invention.

Claims

1. The utility model provides a to heavy safety arrangement, includes that the setting is in synchronous lifting mechanism (2) of the counterweight housing body upper end that has both sides upright beam, characterized by is in the counterweight housing body coexistence roof beam outside is equipped with installation bedplate (202) that the level was arranged respectively, is equipped with a gangbar (201) between two installation bedplates, be equipped with torsional spring (203) between gangbar and the installation bedplate, the both ends of gangbar are fixed with rotor arm (205) respectively, and the end and the safety tongs (204) of rotor arm are connected, and simultaneously, are fixed with on the rotor arm and carry pull head (206), carry and pull head and overspeed governor wire rope and connect.

2. The counterweight safety protection device according to claim 1, characterized in that a wedge block is arranged in the safety gear (204), one end of the rotating arm (205) is sleeved on the end of the linkage rod (201), and the tail end of the rotating arm is linked with the wedge block.

3. The counterweight safety protection device according to claim 1, characterized in that the lifting head (206) is arranged at one side of the counterweight housing body (1), and torsion springs (203) with the same specification are symmetrically arranged between two ends of the linkage rod (201) and the mounting seat plate (202).

4. A counterweight safety arrangement according to claim 1, 2 or 3, characterized in that the lifting head (206) is arranged vertically outside the vertical beam on one side of the counterweight housing body (1) and is fixedly connected with the rotating arm (205) in a clamping manner.

5. A counterweight safety protection device according to claim 1, 2 or 3, characterized in that the top of the outer sides of the two vertical beams of the counterweight housing body (1) is provided with a guide shoe, and the mounting base plate (202) is arranged under the guide shoe in a manner of horizontal tight fit.

6. A counterweight safety protection device according to claim 2, characterized in that a fixed plate is arranged outside the safety gear (204), a rotation limit groove for the swing point of the rotating arm (205) is arranged on the fixed plate, a pin shaft passing through the limit groove is arranged in the wedge block in the safety gear, and the swing point of the rotating arm is hinged with the pin shaft.

7. The counterweight safety protection device of claim 1, 2 or 3, characterized in that the upper and lower ends of the lifting head (206) are designed with connecting rings, and the connecting rings are matched with the speed governor rope.