CN203127671U

CN203127671U - Broken chain protective device

Info

Publication number: CN203127671U
Application number: CN 201320086816
Authority: CN
Inventors: 朱伟; 周成; 李相源; 王智勇
Original assignee: MUYANG CO Ltd
Current assignee: MUYANG CO Ltd
Priority date: 2013-02-26
Filing date: 2013-02-26
Publication date: 2013-08-14
Anticipated expiration: 2023-02-26

Abstract

The utility model relates to a broken chain protective device. A driving shaft is installed in a handpiece shell body, two ends of the driving shaft penetrate out from two side walls of the handpiece shell body respectively and are supported on a machine body through bearing seats, the middle portion of the driving shaft is provided with a driving chain wheel, an upper port of the handpiece shell body is hinged to a top cover, a rotary shaft is further installed inside the handpiece shell body, the rotary shaft is parallel to the axis of the driving shaft, a chain bearing plate which penetrates out from the driving chain wheel is fixed in the length direction of the rotary shaft, one side, facing toward the driving chain wheel, of the chain bearing plate is provided with concave notches, the concave notches are clamped on two sides of the driving chain wheel, one end of the rotary shaft is connected with a crank, the top end of the crank abuts against the lower portion of the top cover, a limiting switch is installed on the side wall of the handpiece shell body, and the top cover is pressed on a contact of the limiting switch to enable the limiting switch to be in a normally-closed state. After being broken, a chain falls on the chain bearing plate, the chain bearing plate drives the rotary shaft and the crank to rotate, the crank jacks the top cover and enables the top cover to be disengaged from the limiting switch, the limiting switch is switched off to enable a control system to conduct alarming or shutdown, and damage to the device is further avoided.

Description

A kind of chain breakage protection device

Technical field

The utility model relates to a kind of embedded scraper transporter, particularly a kind of chain breakage protection device of embedded scraper transporter.

Background technology

In the prior art, embedded scraper transporter comprises head shell, imput shaft is installed in the head shell, the two ends of imput shaft pass and are supported on the body by bearing seat respectively from the two side of head shell respectively, the upper port of head shell is hinged with top cover, the middle part of imput shaft is equipped with drive sprocket, is connected by chain gear between drive sprocket and the driven sprocket, is provided with chain along the chain length direction and supports.In a single day chain fracture takes place in this embedded scraper transporter, and drive sprocket still is being rotated further, and lower floor's chain ceaselessly is deposited in the chain-drive section of conveyer, until stuck, is easy to damage whole head.

The utility model content

The purpose of this utility model is, overcomes problems of the prior art, and a kind of chain breakage protection device is provided, and can in time shut down when chain rupture takes place.

For solving above technical matters; a kind of chain breakage protection device of the present utility model; comprise head shell; in the described head shell imput shaft is installed; the two ends of described imput shaft pass and are supported on the body by bearing seat respectively from the two side of head shell respectively; the middle part of described imput shaft is equipped with drive sprocket; the upper port of described head shell is hinged with top cover; rotating shaft also is installed in the described head shell; the axis of described rotating shaft is parallel with the axis of described imput shaft; hold carrier bar along what the fixing oriented described drive sprocket of the length direction of described rotating shaft stretched out; the described carrier bar that holds is provided with concave indentation towards a side of drive sprocket; described concave indentation is stuck in the both sides of described drive sprocket; one end of described rotating shaft is connected with crank; the top of described crank withstands on the below of described top cover, on the sidewall of described head shell limit switch is installed, and described top cover is pressed on the contact of described limit switch and makes limit switch be in normally off.

With respect to prior art, the utility model has been obtained following beneficial effect: under the normal circumstances, top cover covers on head shell, and the contact of pushing down limit switch makes limit switch be in normally off, and this moment, head can normal operation; After in case the chain fracture takes place; because gravity effect; sagging the dropping on of disrumpent feelings chain held on the carrier bar, hold the carrier bar pressurized after free end rotate, when driving the rotating shaft rotation crank is rotated; top cover is lifted on crank top upwards top; the lower surface of top cover breaks away from the contact of limit switch, makes limit switch break away from normally off, and control system will be sent the alarm chain and disconnect; or directly cut off the electricity supply conveyer is shut down, avoid equipment further to damage.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, accompanying drawing only provides reference and explanation usefulness, and is non-in order to limit the utility model.

Fig. 1 is the front view of the utility model chain breakage protection device.

Fig. 2 removes birds-eye view behind the top cover for Fig. 1.

Fig. 3 removes block diagram behind the top cover for Fig. 1.

Among the figure: 1. head shell, 2. top cover, 3. imput shaft, 4. bearing seat, 5. drive sprocket, 6. hold carrier bar, 7. rotating shaft, 8. crank, 9. limit switch, 10. chain supports; 11. spring.

The specific embodiment

As shown in Figure 1 to Figure 3; chain breakage protection device of the present utility model comprises head shell 1; imput shaft 3 is installed in the head shell 1; the two ends of imput shaft 3 pass and are supported on the body by bearing seat 4 respectively from the two side of head shell 1 respectively; the middle part of imput shaft 3 is equipped with drive sprocket 5; the upper port of head shell 1 is hinged with top cover 2, and top cover 2 two ends are provided with the spring 11 that is connected with head shell 1.Rotating shaft 7 also is installed in the head shell 1, the axis of rotating shaft 7 is parallel with the axis of imput shaft 3, hold carrier bar 6 along what the fixing oriented drive sprocket 5 of the length direction of rotating shaft stretched out, hold carrier bar 6 and be provided with concave indentation towards a side of drive sprocket 5, concave indentation is stuck in the both sides of drive sprocket 5, one end of rotating shaft 7 is connected with crank 8, the top of crank 8 withstands on the below of top cover 2, limit switch 9 is installed on the sidewall of head shell 1, top cover 2 is pressed on the contact of limit switch 9 and makes limit switch be in normally off, and the rear of rotating shaft 7 is provided with chain and supports 10.

Under the normal circumstances, top cover 2 covers on head shell 1, and the contact of pushing down limit switch 9 makes limit switch 9 be in normally off, and this moment, head can normal operation; After in case the chain fracture takes place; because gravity effect; sagging the dropping on of disrumpent feelings chain held on the carrier bar 6, hold carrier bar 6 pressurizeds after free end rotate, when driving rotating shaft 7 rotations crank 8 is rotated; top cover 2 is lifted on crank 8 tops upwards top; the lower surface of top cover 2 breaks away from the contact of limit switch 9, makes limit switch 9 break away from normally off, and control system will be sent the alarm chain and disconnect; or directly cut off the electricity supply conveyer is shut down, avoid equipment further to damage.

The above only is the preferable possible embodiments of the utility model, and is non-so limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. chain breakage protection device; comprise head shell; in the described head shell imput shaft is installed; the two ends of described imput shaft pass and are supported on the body by bearing seat respectively from the two side of head shell respectively; the middle part of described imput shaft is equipped with drive sprocket; the upper port of described head shell is hinged with top cover; it is characterized in that: rotating shaft also is installed in the described head shell; the axis of described rotating shaft is parallel with the axis of described imput shaft; hold carrier bar along what the fixing oriented described drive sprocket of the length direction of described rotating shaft stretched out; the described carrier bar that holds is provided with concave indentation towards a side of drive sprocket; described concave indentation is stuck in the both sides of described drive sprocket; one end of described rotating shaft is connected with crank; the top of described crank withstands on the below of described top cover; on the sidewall of described head shell limit switch is installed, described top cover is pressed on the contact of described limit switch and makes limit switch be in normally off.