CN102688569B

CN102688569B - Mesh belt speed automatic controller

Info

Publication number: CN102688569B
Application number: CN201210172010.4A
Authority: CN
Inventors: 周宙龙; 薛迪龙
Original assignee: ZHEJIANG ZUOYI POWER EQUIPMENT CO Ltd
Current assignee: ZHEJIANG ZUOYI POWER EQUIPMENT CO Ltd
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2014-12-03
Anticipated expiration: 2032-05-30
Also published as: CN102688569A

Abstract

A mesh belt speed automatic controller includes a casing as well as a fixing rack and a rotating disc both positioned in the casing, wherein a mesh belt is wound on the rotating disc, the external end of the mesh belt is exposed outside the casing, an elastically closed rotatable pawl is correspondingly matched with a fixed inner gear to form a speed anti-falling mechanism, a fixed main shaft is also arranged in the center of the rotating disc, and moreover, the internal end of the mesh belt partially passes through a side seam of the rotating disc and is connected onto the fixed main shaft, as a result, a central pull-bearing structure is formed. According to the invention, as the internal end of the mesh belt is connected onto the fixed main shaft in the center, even the mesh belt runs out, the pull-down moment does not exist between the mesh belt and the rotating center, and the pull-down force mostly acts on the fixed main shaft; the pull-bearing structure is reasonable, the force-bearing strength is high; the anti-falling mechanism inside the speed automatic controller is prevented from damage; and the safety and reliability are high.

Description

The poor device of ribbon speed

Technical field: the present invention relates to the poor device of speed of the anti-fall use of a kind of work high above the ground, particularly the poor device of ribbon speed.

Background technology: in many fields that need work high above the ground, operating personnel needs to be articulated in fast difference on device rope band and prevents that high-altitude is born.General ribbon speed difference device is all that the ratchet that uses elasticity to draw in is connected on rolling disc, and coordinates with fixing interior fluted disc.When ribbon is by rapid when drop-down, ratchet be centrifuged throws away and blocks fixing in fluted disc, rolling disc is stopped operating, the personnel of preventing drop.Because ribbon inner end is generally connected to rolling disc sidewall, ribbon stressed when drop-down and the arm of force that forms of center of rotation longer, drop-down moment is large, it is reasonable not that the poor device of speed inside bears structure, if ribbon is drawn when most energetically, probably cause the poor device internal sabotage of speed, falling stop body lost efficacy, and affected safety.

Summary of the invention: for the deficiencies in the prior art, the invention provides a kind of inside and bear the poor device of ribbon speed rational in infrastructure.

The present invention includes housing and the fixed support being placed in one and rolling disc, ribbon is wound on rolling disc, and expose outside housing the outer end of ribbon, the rotatable ratchet that elasticity is drawn in forms speed difference falling stop body with fixing interior fluted disc corresponding matching, center at rolling disc is also provided with fixed main shaft, the inner end part of ribbon is passed the latasuture place of rolling disc and is connected on fixed main shaft, and formation center bears structure.

Ribbon of the present invention inner end is connected on the fixed main shaft of center, even ribbon is drawn when most energetically and center of rotation between there is no drop-down moment yet, lower pulling force basic role is on fixed main shaft, bear rational in infrastructure, load intensity is high, the inner falling stop body of the poor device of speed can not destroyed by lower pulling force, and security reliability is high.

In fact, the surface of fixed main shaft can be overlapped axle sleeve, can reduce friction.

Further, ratchet can be connected in the seat board linking with rolling disc, between the end of ratchet and seat board, is connected with Compress Spring, forms roof pressing type elasticity and draws structure in, has avoided the issuable ratchet of employing extension spring easily to shake, even the problem of misoperation.

On position outside ribbon exposes housing, also can be connected with buffering subband, buffering subband and ribbon rule plicating suture, can cushion like this and reduce the impulsive force that partly drops.

Below in conjunction with drawings and Examples, further illustrate the present invention.

Accompanying drawing explanation: Fig. 1 is the main structure schematic diagram of embodiment.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the schematic diagram of the poor falling stop body of speed.

Fig. 4 is ribbon inner end and fixed main shaft connection status schematic diagram.

Fig. 5 is the plicating suture structural representation of I portion in Fig. 2.

Embodiment: as shown in Figures 1 to 4, fixed support 2 and rolling disc 3 are placed in housing 1, and ribbon 6 is wound on rolling disc 3, and the outer end of ribbon 6 exposes outside housing 1, and the outer end of general ribbon 6 is also connected with hook 13, is convenient to hook operating personnel.4, the rotatable ratchet that elasticity is drawn in and fixing interior fluted disc 5 corresponding matching form the poor falling stop body of speed, and ratchet 4 has two conventionally.Center at rolling disc 3 is also provided with fixed main shaft 7, and the inner end part of ribbon 6 is passed the latasuture place 8 of rolling disc 3 and is connected on fixed main shaft 7, and formation center bears structure.

The ratchet 4 of the present embodiment is connected in the seat board 9 linking with rolling disc 3, between the end of ratchet 4 and seat board 9, is connected with Compress Spring 10, forms roof pressing type elasticity and draws structure in.When off working state, the compressed spring of the end of ratchet 4 10 tops are pressed and are drawn in, in stable condition, have avoided the issuable ratchet 4 of employing extension spring easily to shake, even the problem of misoperation like this.The surface of fixed main shaft 7 can be overlapped axle sleeve 12, can reduce friction.Conventionally can also adopt copper, the double-deck axle sleeve structure of aluminium, performance is better.

During use, hook 13 can hook operating personnel's safety belt suspension ring, normal movement while pulling out ribbon 6, and because the velocity of rotation of rolling disc 3 is slow, two the compressed springs of ratchet 4 10 tops are pressed to draw in and can not thrown away, do not have locking action.If dropped suddenly, because ribbon 6 draws outside fast, the quick rotation of rolling disc 3 can make two centrifugal rotations of ratchet 4 throw away, and Compress Spring 10 is compressed by the end of ratchet 4, and the internal tooth falling stop of fixing interior fluted disc 5 is blocked in the outer end of ratchet 4.Even if ribbon 6 is drawn to the greatest extent energetically, also basic role is on fixed main shaft 7 for lower pulling force, and load intensity is high, and falling stop body can not destroyed by lower pulling force yet, and security reliability is high.

In fact, as shown in Figure 5, on the position outside ribbon 6 exposes housing 1, also can be connected with buffering subband 11, buffering subband 11 and ribbon 6 rule plicating sutures.When action falling stop, if lower pulling force is very large, it is stretching that the plicating suture place of buffering subband 11 and ribbon 6 can be torn expansion like this, can cushion like this and reduce the impulsive force that partly drops, and improves the security reliability of speed difference device.

Claims

1. a ribbon speed differs from device, comprise housing and the fixed support being placed in one and rolling disc, ribbon is wound on rolling disc, and expose outside housing the outer end of ribbon, the rotatable ratchet that elasticity is drawn in forms speed difference falling stop body with fixing interior fluted disc corresponding matching, it is characterized by: in the center of rolling disc (3), be also provided with fixed main shaft (7), the inner end part of ribbon (6) is passed the latasuture place (8) of rolling disc (3) and be connected to fixed main shaft (7) upper, and formation center bears structure; In the seat board (9) that ratchet (4) is connected to and rolling disc (3) links, between the end of ratchet (4) and seat board (9), be connected with Compress Spring (10), form roof pressing type elasticity and draw structure in.

2. the poor device of ribbon speed according to claim 1, is characterized by: on the position outside ribbon (6) exposes housing (1), be also connected with buffering subband (11), buffering subband (11) and ribbon (6) rule plicating suture.

3. the poor device of ribbon speed according to claim 1 and 2, is characterized by: the surface cover of fixed main shaft (7) has axle sleeve (12).