CN202731974U

CN202731974U - Detacher

Info

Publication number: CN202731974U
Application number: CN 201220302783
Authority: CN
Inventors: 邱雷; 张明广; 慕瑞嘉; 杨震威
Original assignee: Shandong Conwell Communication Technology Co Ltd
Current assignee: Conway Communication Technology Co ltd
Priority date: 2012-06-27
Filing date: 2012-06-27
Publication date: 2013-02-13
Anticipated expiration: 2022-06-27

Abstract

The utility model discloses a detacher, comprising a frame body, a guide pull rod, upper pull rods, lower drag hooks, a connecting pin and a bearing pin, wherein the frame body is internally provided with the guide pull rod, the upper pull rods and the lower drag hooks in sequence; two upper pull rods and two lower drag hooks are arranged; the guide pull rod is hinged with the two upper pull rods through connecting pins; the upper pull rods and the lower drag hooks are hinged through the connecting pins; the two lower drag hooks are hinged through the bearing pin; the bearing pin is fixedly arranged on the frame body; and a linked plane four-rod mechanism is formed by the upper pull rods and the lower drag hooks. According to a control structure disclosed by the utility model, after a ventilation window of an electric ventilation pavilion is damaged, a suspended well cover is released from the hooks and falls down through pulling the guide pull rod of the detacher by a steel wire, so a well opening can be automatically closed; and meanwhile, misinformation caused by the fact that due to too small vibration, the well cover is triggered to be released from the hooks is avoided. The dual protection of an electric tunnel well opening can be guaranteed under the condition of being unattended.

Description

A kind of detacher

Technical field

The utility model relates to field of mechanical technique, relates in particular to a kind of detacher, and this detacher can suspend well lid in midair and can control well lid and break off relations in the electric ventilation booth.

Background technology

Because the needs of tunnel ventilation are not generally established well lid shutoff well head, protection relies on the vent window of ventilation booth fully, has potential safety hazard when vent window is destroyed in traditional electric ventilation booth; If with well lid shutoff well head then can not ventilate again.So need a kind of device to ventilate by vent window, can realize again after the vent window protection is lost efficacy, utilizing well lid to protect well head.

The utility model content

The purpose of this utility model is that the suspention well lid is to keep ventilation above well head in the ventilation booth in order to solve, and when vent window was destroyed, the well lid of suspention can be triggered and fall and the shutoff well head, and protection tunnel facility is not further destroyed.

To achieve these goals, the utility model adopts following technical scheme.

A kind of detacher comprises support body, guide draw bar, upper connecting rod, lower drag hook, connecting pin, bearing pin; Be provided with the guide draw bar, upper connecting rod and the lower drag hook that connect successively in the described support body, described upper connecting rod and lower drag hook respectively have two, guide draw bar and two upper connecting rods are hinged by connecting pin, hinged by connecting pin between upper connecting rod and the lower drag hook, hinged by bearing pin between two lower drag hooks, bearing pin is fixed on the support body, the four-bar linkage of described upper connecting rod and the interlock of drop-down hook-forming.

Be provided with fixed mount on the described support body, support body is fixed on the external structure by fixed mount.

On connecting pin between described guide draw bar and the upper connecting rod is fixed on and connects U-shaped.

Be provided with E type split washer on the connecting pin between described upper connecting rod and the lower drag hook.

Be provided with E type split washer on the described bearing pin.

Described bearing pin is fixed on the support body by locking nut.

Described detacher also comprises back-moving spring, and back-moving spring connects upper connecting rod and lower drag hook.

Be provided with on the described lower drag hook can with the spacer pin of drag hook displacement under the support body engagement limits.

Be fixed with the stringing piece on the described guide draw bar, be fixed with backguy on the described stringing piece, backguy links to each other with external trigger device.

Detacher structural principle of the present utility model is, a pair of upper connecting rod is connected by connecting pin with a pair of lower drag hook, a pair of lower drag hook all is connected on the support body with bearing pin, form like this four-bar mechanism that a cover can link, the laborsaving lever construction of a pair of drop-down hook-forming power arm and resistance arm stroke 1:3, when the guide draw bar that is connected with upper connecting rod is stressed when being subjected to displacement on backward, can affect the four-bar mechanism distortion, cause a pair of lower drag hook to separate round about, two drop-down well lid handle or other weights of embracing of hooking together are come off, because what adopt is laborsaving lever, so only need less power that weight is broken off relations, and need guide draw bar to move upward behind the certain distance, the lower drag hook that surrounds just can be opened to and can make the necessary spacing of weight unhook, this just can be avoided weight to break off relations too easily, and makes it when the external force impact reaches certain limit, just can trigger the action of breaking off relations.

After weight breaks off relations, because the effect of reset tension spring, lower drag hook is pulled to and resets, until two lower drag hooks are blocked by the other side's spacer pin, at this moment play the hook portion of drag hook just to form certain subtended angle, from then on bang in the subtended angle when making things convenient for weight or well lid handle to reset among the surrounding of twice drag hooks, get back to duty.

The beneficial effects of the utility model: control structure of the present utility model, after can the vent window in the electric ventilation booth being destroyed, guide draw bar by steel wire pulling detacher, the well lid unhook of its lower suspention is fallen, realize the automatic plugging well head, can just not trigger the well lid unhook because of too small vibrations (for example road passes through the vibration that bogie is) again simultaneously and cause wrong report.Ensured in unattended situation the double protection to the electric power tunnel well head.

Description of drawings

Fig. 1: drag hook closing structure schematic diagram under the detacher.

Fig. 2: drag hook expanded configuration schematic diagram under the detacher.

Among the figure, 1. support body; 2. fixed mount; 3. guide cover; 4. connect U-shaped; 5. upper connecting rod; 6. play drag hook; 7. connecting pin, 8. Ф 4 opening E type back-up rings; 9. bearing pin; 10. Ф 10 opening E type back-up rings; 11. locking nut; 12. back-moving spring; 13. spacer pin; 14. guide draw bar; 15. stringing piece.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

The support body 1 of detacher is fixed on other rigid structures body by fixed mount 2, can suspension heavy weight in the closed space that a pair of lower drag hook 6 surrounds, and such as the steel handle of well lid.Can fix the backguy with the interlock of other structure on the stringing piece 15, such as steel wire, backguy links to each other with other structure after passing through wires hole above the guide cover 3, such as vent window.Details are with reference to figure 1.When ventilating window structure is destroyed, can spur steel wire, and then pulling upper connecting rod 5 is upwards along guide cover 3 displacements, cause the four-bar mechanism distortion, when shift length surpasses 4CM, the a pair of lower drag hook 6 that surrounds separates round about, and the width of dehiscing will be above 8MM, and the at this moment weight of suspention unhook (such as the handle diameter of section 8MM of well lid) is fallen.At this moment, because the active force of back-moving spring 12, lower drag hook 6 is reset to 13 extreme position of limited pin to details with reference to figure 2. (make this device break off relations the steel wire pulling force of action in three kilograms, suspention well lid weight reaches 20 kilograms).Such as Fig. 1 state.Such as all clear, when well lid was resetted, the well lid handle can bang in the scope of these lower drag hook 6 subtended angles in the surrounding of this a pair of drop-down hook 6, has made things convenient for attendant's operation.

Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.

Claims

1. a detacher is characterized in that, comprises support body, guide draw bar, upper connecting rod, lower drag hook, connecting pin, bearing pin; Be provided with the guide draw bar, upper connecting rod and the lower drag hook that connect successively in the described support body, described upper connecting rod and lower drag hook respectively have two, guide draw bar and two upper connecting rods are hinged by connecting pin, hinged by connecting pin between upper connecting rod and the lower drag hook, hinged by bearing pin between two lower drag hooks, bearing pin is fixed on the support body, the four-bar linkage of described upper connecting rod and the interlock of drop-down hook-forming.

2. detacher as claimed in claim 1 is characterized in that, is provided with fixed mount on the described support body, and support body is fixed on the external structure by fixed mount.

3. detacher as claimed in claim 1 is characterized in that, on the connecting pin between described guide draw bar and the upper connecting rod is fixed on and connects U-shaped.

4. detacher as claimed in claim 1 is characterized in that, is provided with E type split washer on the connecting pin between described upper connecting rod and the lower drag hook.

5. detacher as claimed in claim 1 is characterized in that, is provided with E type split washer on the described bearing pin.

6. such as claim 1 or 5 described detachers, it is characterized in that, described bearing pin is fixed on the support body by locking nut.

7. detacher as claimed in claim 1 is characterized in that, described detacher also comprises back-moving spring, and back-moving spring connects upper connecting rod and lower drag hook.

8. detacher as claimed in claim 1 is characterized in that, be provided with on the described lower drag hook can with the spacer pin of drag hook displacement under the support body engagement limits.

9. detacher as claimed in claim 1 is characterized in that, is fixed with the stringing piece on the described guide draw bar, is fixed with backguy on the described stringing piece, and backguy links to each other with external trigger device.