Telescopic protective device of reversed loader

Abstract

The telescopic protective device comprises a clamping seat, a protective cover, a stretching cover and a push-pull piece, the protective cover is fixedly arranged on the clamping seat, the stretching cover is arranged on the inner side wall of the protective cover in a sliding mode, and the push-pull piece is arranged on the top of the protective cover and the top of the stretching cover. The utility model belongs to the technical field of telescopic protective devices of reversed loaders, and particularly relates to a telescopic protective device of a reversed loader.

Description

Technical Field

[0001] The utility model belongs to the technical field of retractable protection devices for transfer machines, and specifically refers to a retractable protection device for a transfer machine. Background Art

[0002] The transfer machine is one of the most important transportation equipment in the fully mechanized coal mining face underground in coal mines. However, it is also one of the areas where accidents frequently occur in the fully mechanized coal mining face underground in coal mines. For example, coal blocks fly out and injure people, large coal blocks squeeze out of the chute and injure people, and accidents occur when workers cross the transfer machine without using the pedestrian bridge. In order to ensure the safety of the workers working around the transfer machine, crossing the transfer machine through the pedestrian bridge to enter and exit the working face, and the equipment around the transfer machine, it is necessary to install a protection device on the transfer machine.

[0003] However, after the existing protection device of the transfer machine is used, it has a large volume, so it occupies a large space and is inconvenient to store. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that after the existing protection device of the transfer machine is used, it has a large volume, so it occupies a large space and is inconvenient to store.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a retractable protection device for a transfer machine, including a card seat, a protective cover, an extension cover and a push-pull member. The protective cover is fixedly arranged on the card seat. The extension cover is slidably arranged on the inner side wall of the protective cover. The push-pull member is arranged on the tops of the protective cover and the extension cover.

[0006] Preferably, a slide rail is arranged on the side wall of the protective cover, and the inner side wall of the extension cover is slidably arranged on the slide rail.

[0007] Preferably, the push-pull member includes a rotating shaft, a linkage plate and a support arm. The rotating shaft rotates through the protective cover and extends out at both ends. The middle part of the linkage plate is fixedly sleeved on the bottom end of the rotating shaft. One end of the support arm is rotatably arranged on one end of the linkage plate through a shaft, and the other end of the support arm is rotatably arranged on the top wall of the telescopic cover through a shaft. A limiting member is arranged between the rotating shaft and the top wall of the protective cover.

[0008] Preferably, the limiting member includes a clamping column, a spring and a limiting sleeve. A through hole is arranged at the top of the rotating shaft. The clamping column is slidably arranged in the through hole. The cross section of the clamping column is arranged in a hexagonal structure. The through hole corresponds to the clamping column. The spring is arranged in the through hole and between the bottom end of the clamping column and the through hole. The bottom end of the limiting sleeve is fixedly arranged on the protective cover. An internal gear ring is arranged on the inner top of the limiting sleeve. A gear is fixedly arranged on the top of the clamping column. The gear meshes with the internal gear ring under the elastic force of the spring. A knob is arranged on the top wall of the gear.

[0009] Preferably, the cross-section of the card seat is arranged in a U-shaped structure, and a number of fastening bolts are screwed on the card seat.

[0010] Preferably, the cross-sections of the protective cover and the extension cover are both U-shaped and arranged in a hollow structure.

[0011] The beneficial effects of the present utility model adopting the above structure are as follows: The card seat is clamped on both sides of the transfer machine and fixed by fastening bolts. In this way, the protection of the transfer machine can be divided into several protective covers and extension covers. When storing, the extension cover can be retracted into the protective cover through the push-pull member to reduce the volume of the whole device, reduce the occupied space and facilitate storage. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0013] Figure 2 is a bottom view of an embodiment of the present utility model;

[0014] Figure 3 is a sectional view of an embodiment of the present utility model;

[0015] Figure 4 is a perspective view of an embodiment of the present utility model.

[0016] Wherein, 1. Card seat, 2. Protective cover, 3. Extension cover, 4. Push-pull member, 5. Slide rail, 6. Rotating shaft, 7. Linkage plate, 8. Support arm, 9. Limiting member, 10. Clamping post, 11. Spring, 12. Limiting sleeve, 13. Through hole, 14. Internal gear ring, 15. Gear, 16. Knob, 17. Fastening bolt. Detailed Embodiment

[0017] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The following further describes the present utility model in detail with reference to the drawings.

[0019] As Figures 1-4 shown, a retractable protection device for a transfer machine proposed by the present utility model includes a card seat 1, a protective cover 2, an extension cover 3 and a push-pull member 4. The cross-section of the card seat 1 is arranged in a U-shaped structure. A number of fastening bolts 17 are threadedly connected to the card plate. The card seat 1 is clamped on both sides of the transfer machine and fixed by the fastening bolts 17. The protective cover 2 is fixedly arranged on the card seat 1. The extension cover 3 is slidably arranged on the inner side wall of the protective cover 2. A slide rail 5 is arranged on the side wall of the protective cover 2. The inner side wall of the extension cover 3 is slidably arranged on the slide rail 5. Through the arrangement of the slide rail 5, the stability of the sliding of the extension cover 3 is increased. The cross-sections of the protective cover 2 and the extension cover 3 are both U-shaped and are arranged in a hollow structure. The hollow protective cover 2 and the extension plate facilitate the staff to check the internal situation of the transfer machine. The push-pull member 4 is arranged on the tops of the protective cover 2 and the extension cover 3. When storing, the extension cover 3 can be retracted into the protective cover 2 through the push-pull member 4 to reduce the volume of the whole device, reduce the occupied space and facilitate storage.

[0020] As Figure 2 shown, the push-pull member 4 includes a rotating shaft 6, a linkage plate 7 and a support arm 8. The rotating shaft 6 rotates through the protective cover 2 and extends out at both ends. The middle part of the linkage plate 7 is fixedly sleeved on the bottom end of the rotating shaft 6. One end of the support arm 8 is rotatably arranged on one end of the linkage plate 7 through a shaft. The other end of the support arm 8 is rotatably arranged on the top wall of the telescopic cover through a shaft. A limiting member 9 is arranged between the rotating shaft 6 and the top wall of the protective cover 2. Rotating the rotating shaft 6 drives the linkage plate 7 to rotate, and then the included angle between the linkage plate 7 and the support arm 8 changes to push and pull the extension plate.

[0021] As Figures 3-4As shown, the limiting member 9 includes a clamping post 10, a spring 11 and a limiting sleeve 12. A through hole 13 is provided at the top of the rotating shaft 6. The clamping post 10 is slidably disposed in the through hole 13. The cross section of the clamping post 10 is arranged in a hexagonal structure. The through hole 13 is correspondingly arranged with the clamping post 10. The spring 11 is disposed in the through hole 13 and between the bottom end of the clamping post 10 and the through hole 13. The bottom end of the limiting sleeve 12 is fixedly disposed on the protective cover 2. An internal gear ring 14 is provided at the inner top of the limiting sleeve 12. A gear 15 is fixedly provided at the top of the clamping post 10. The gear 15 is engaged with the internal gear ring 14 under the elastic force of the spring 11. A knob 16 is provided on the top wall of the gear 15. When the knob 16 is pulled, the spring 11 undergoes elastic deformation, and the gear 15 slides out of the internal gear ring 14. At this time, the knob 16 can be rotated. The knob 16 drives the clamping post 10 to rotate, and the clamping post 10 drives the rotating shaft 6 to rotate. Then the rotating shaft 6 can drive the linkage plate 7 to rotate to stretch the extension plate.

[0022] During specific use, the clamping seats 1 are clamped on both sides of the transfer machine and fixed by the fastening bolts 17. Then, the protection of the transfer machine can be divided into several protective covers 2 and extension covers 3 in the above-mentioned manner.

[0023] During storage, when the knob 16 is pulled, the spring 11 undergoes elastic deformation, and the gear 15 slides out of the internal gear ring 14. At this time, the knob 16 can be rotated. The knob 16 drives the clamping post 10 to rotate, and the clamping post 10 drives the rotating shaft 6 to rotate. Then the rotating shaft 6 can drive the linkage plate 7 to rotate, and the included angle between the linkage plate 7 and the support arm 8 changes to retract the extension plate into the protective cover, reducing the volume of the entire device, occupying less space, and facilitating storage.

[0024] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A retractable protective device for a loader, characterized in that: It includes a card seat, a protective cover, an extension cover and a push-pull member. The protective cover is fixedly arranged on the card seat. The extension cover is slidably arranged on the inner side wall of the protective cover. The push-pull member is arranged on the tops of the protective cover and the extension cover.

2. The retractable protective device for a loader according to claim 1, wherein: A slide rail is arranged on the side wall of the protective cover. The inner side wall of the extension cover is slidably arranged on the slide rail.

3. The retractable protection device for a loader according to claim 1, characterized in that: The push-pull member includes a rotating shaft, a linkage plate and a support arm. The rotating shaft rotatably penetrates through the protective cover and extends out at both ends. The middle part of the linkage plate is fixedly sleeved on the bottom end of the rotating shaft. One end of the support arm is rotatably arranged on one end of the linkage plate through a shaft. The other end of the support arm is rotatably arranged on the top wall of the telescopic cover through a shaft. A limiting member is arranged between the rotating shaft and the top wall of the protective cover.

4. The retractable protective device for a loader according to claim 3, wherein: The limiting member includes a clamping post, a spring and a limiting sleeve. A through hole is arranged at the top of the rotating shaft. The clamping post is slidably arranged in the through hole. The cross section of the clamping post is arranged in a hexagonal structure. The through hole corresponds to the clamping post. The spring is arranged in the through hole and between the bottom end of the clamping post and the through hole. The bottom end of the limiting sleeve is fixedly arranged on the protective cover. An internal gear ring is arranged on the inner top of the limiting sleeve. A gear is fixedly arranged on the top of the clamping post. The gear meshes with the internal gear ring under the elastic force of the spring. A knob is arranged on the top wall of the gear.

5. The retractable protective device for a loader according to claim 1, wherein: The cross section of the card seat is arranged in a U-shaped structure. A plurality of fastening bolts are threadedly connected to the card seat.

6. The retractable protective device for a loader according to claim 1, characterized in that: The cross sections of the protective cover and the extension cover are both U-shaped and are arranged in a hollow structure.

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