CN2198366Y

CN2198366Y - Gear driving key puzzle box

Info

Publication number: CN2198366Y
Application number: CN 94237237
Authority: CN
Inventors: 李进生
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-28
Filing date: 1994-04-28
Publication date: 1995-05-24
Anticipated expiration: 2004-04-28

Abstract

The utility model relates to a two-way force increasing band type self brake, which comprises a coiling flexible element and a friction load-transfer part, wherein, hook heads at both ends of a braking band which is wound on a braking wheel are spaced by a positioning rod, and both ends of a steel cable which is wound on a cable wheel are fixed on the hook heads of the braking band; a drive gear which is meshed with the cable wheel is connected with a groove wheel capable of binding with a drive friction wheel, and the groove wheel is arranged on an operating rod; one end of the operating rod is hinged on a base, and the other end is provided with an electromagnet and a spring. The utility model has the advantages of simple structure, reasonable design, stable braking and outstanding energy saving. The utility model can realize two-way braking, and can be used for any occasion which requires high-speed braking.

Description

Gear driving key puzzle box

The utility model relates to a kind of band brake, specifically is a kind of two-way reinforcement belt self-retention device.

Existing band brake can only be made one-way brake and use, and is generally the object braking of low speed rotation, and there are Weight type, spring and manpower drive-type in its brake force source.Because its physical dimension is big, often will adjust wearing clearance, and braked part has been added a moment of flexure that is directly proportional with braking moment, makes its scope of application be restricted greatly.

The purpose of this utility model just provides a kind of energy bi-directional braking, and braking is steadily, the two-way reinforcement belt self-retention device of obvious energy conservation, and the compensate for wear gap reduces additional bending moment infinitely automatically, brakes steadily, and can be used for any needs occasion of braking at a high speed.

The technical solution of the utility model is: comprise coiling flexible member and friction power transmission two parts, wherein the gib head at the brake band two ends on the braked wheel is spacing by backstay, on the gib head at brake band two ends, be connected with wire rope, and on rope sheave, rope sheave is driven by gear drive, and passive sheave is housed on gear drive can be contacted with the active friction wheel that is connected with braked wheel, and sheave is housed on control stick, the one end is hinged on the pedestal, and the other end is equipped with electromagnet and spring.

Its detailed content accompanying drawing in conjunction with the embodiments is described below.

At first accompanying drawing is described:

Fig. 1 represents structure chart of the present utility model;

Fig. 2 represents the structure chart of frictional drive;

Fig. 3 represents the connection diagram of friction pulley.

Referring to Fig. 1, according to technique scheme, operating principle of the present utility model is: when active friction wheel (1) turns clockwise, and during electromagnet (10) outage, spring (11) upwards rotates control stick (9), be contained in the passive sheave (8) on the control stick (9) thereby also upwards move and engage, and do rotation counterclockwise by frictional force drives with active friction wheel (1).The rotation driven wheel transmission mechanism of sheave (8), and drive rope sheave (7) rotation, rotate such as clockwise direction, thereby the right-hand component of tense wire rope (5), the wire rope on the left side (5) is though loosened, but bar (4) has limited displacement because gib head is positioned, so the gib head on the left side is fixed an end of brake band (3), the other end of brake band (3) makes brake band (3) be close to upward realization braking of braked wheel (2) by wire rope (5) power transmission of tension.In like manner, during active friction wheel (1) counter rotation, braking principle is identical, thereby but has realized the braking of two-way all reinforcements.During release, give electromagnet (10) energising, control stick (9) is moved down, passive sheave (8) also moves down with active friction wheel (1) and breaks away from, brake band under the effect of return spring (3) breaks away from braked wheel (2) and resets, and makes braked wheel (2) remove braking.

Wearing and tearing for the wheel of reducing friction, the utility model is between braked wheel (2) and active friction wheel (1), and adopt flexible member hold-down mechanism to connect between the driving gear (6) in passive sheave (8) and the gear drive by spring (12), pin (13) and frictional disk (14) formation, as shown in Figure 3, like this, the sliding friction that when braking produced is partly transferred on the end face between the connector, thereby has increased the life-span of friction pulley.One end of control stick of the present utility model (9) is hinged in the rotating shaft of rope sheave (7), makes compact conformation.

Gear drive of the present utility model is the one-level gear drive, and promptly rope sheave (7) is driven by driving gear (6), and sheave (8) is connected on the driving gear (6), makes that whole brake structural is simple, and volume is little.Be stained with powdered metallurgical material on friction pulley of the present utility model (1) surface, as shown in Figure 2, when electromagnet (10) cuts off the power supply, passive sheave (8) combines with active friction wheel (1), because friction pulley (1) surface is stained with powdered metallurgical material and suitable grooved angle, braked part can not stop the rotation immediately, also will turn over certain angle, promptly passive relatively sheave (8) can rotate an angle, slide until reach the braking moment of in advance setting up relative with generation between the friction pulley (1).Thereby improved the stationarity of braking.

The two-way reinforcement belt self-retention device that the utility model provides is simple in structure, modern design, rationally, it is the brake force source to be braked rotatablely moving of body itself, can be infinitely compensate for wear gap automatically, and reduced additional bending moment, thereby improved the stationarity of braking greatly, energy-conservation more than 80%, effect is remarkable, also realized bi-directional braking simultaneously, and can be used for any needs occasion of braking at a high speed, enlarged the scope of application, and manufacturing process is simple, long service life is saved material.

According to the embodiment shown in the accompanying drawing 1, the utility model comprises coiling flexible member and friction power transmission two parts.Wherein adopt between active friction wheel (1) and the braked wheel (2) by spring (12), the elastic compression mechanism that pin (13) and frictional disk (14) constitute connects, as shown in Figure 3, two ends be gib head and with the brake band (3) of return spring on braked wheel (2), and limit by backstay (4), the two ends of the wire rope (5) on the rope sheave (7) are connected respectively on the gib head of brake band (3), rope sheave (7) is meshed with driving gear (6), the elastic compression mechanism that driving gear (6) is gone up by as shown in Figure 3 is connected with passive sheave (8), sheave (8) is contained on the control stick (9), one end of control stick (9) is hinged in the rotating shaft of rope sheave (7), the other end is equipped with electromagnet (10) and spring (11), is stained with powdered metallurgical material on friction pulley (1) surface.

Claims

1, a kind of two-way reinforcement belt self-retention device, comprise coiling flexible member and friction power transmission two parts, feature of the present utility model is spacing by backstay (4) at the gib head at brake band (3) two ends on braked wheel (2), on the gib head at brake band (3) two ends, be connected with wire rope (5), and on rope sheave (7), rope sheave (7) is driven by gear drive, active friction wheel (1) contact that passive sheave (8) can be connected with braked wheel (2) is housed on gear drive, sheave (8) is housed on control stick (9), one end and pedestal are hinged, and the other end is equipped with electromagnet (10) and spring (11).

2, two-way reinforcement belt self-retention device according to claim 1, it is characterized in that between braked wheel (2) and the active friction wheel (1), and adopt flexible member hold-down mechanism to connect between the gear (6) in passive sheave (8) and the gear drive by spring (12), pin (13) and frictional disk (14) formation.

3, two-way reinforcement belt self-retention device according to claim 1 and 2 is characterized in that gear drive is the one-level gear drive, and promptly rope sheave (7) is driven by driving gear (6), is connected with sheave (8) with driving gear (6).

4, two-way reinforcement belt self-retention device according to claim 1 is characterized in that being stained with powdered metallurgical material on friction pulley (1) surface.

5, two-way reinforcement belt self-retention device according to claim 1 is characterized in that an end of control stick (9) is hinged in the rotating shaft of rope sheave (7).