Opening and closing mechanism for stay tube runway cover

Abstract

The utility model relates to the technical field of stay tube runways, and provides an opening and closing mechanism for a stay tube runway cover, which comprises a base, a cover body, a cover opening shaft, a sliding frame, a balancing weight and a connecting block, two ends of the cover body are respectively a first end and a second end, the second end of the cover body is hinged on the base, the cover opening shaft is movably arranged relative to the base, the sliding frame is slidably arranged on the cover body, and the balancing weight is arranged on the base. The balancing weight and the connecting block are both arranged on the sliding frame, the connecting block is used for being connected with the uncovering shaft, after the sliding frame slides, the connecting block is located at the first end of the cover body, the balancing weight is located in the middle of the cover body, or the connecting block is located in the middle of the cover body, the balancing weight is located at the second end of the cover body, and after the uncovering shaft moves, the balancing weight is used for driving the cover body to swing. By means of the technical scheme, the problems that in the prior art, a runway cover is heavy, hoisting is strenuous, and a heavy-load driving element is needed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe drawing runways, and specifically, to an opening and closing mechanism for a pipe drawing runway cover. Background Art

[0002] A glass tube is a kind of non-metal tube, with sodium oxide, boron oxide, and silicon dioxide as its basic components. It has good mechanical properties, thermal stability, water resistance, alkali resistance, acid resistance, etc., and is widely used in various fields such as chemical industry, aerospace, military, household, and hospital.

[0003] When producing glass tubes, heat preservation is required after pipe drawing. The common method in the prior art is to use a heat preservation runway for heat preservation. To ensure good sealing performance, the runway cover is relatively heavy, so a heavy-duty opening drive element is required to lift the runway cover, which is rather laborious. After a long time, problems are likely to occur in each load-bearing component. In addition, according to the length of the heat preservation runway, there are many runway covers. Sometimes, according to the actual situation on site, some runway covers need to be opened separately, and sometimes several runway covers need to be opened simultaneously. For this reason, opening drive elements with different structures also need to be designed, resulting in a complex structure and a high design cost. In response to the above problems, the prior art has not solved them well, bringing trouble to the normal operation of this field. Therefore, there is an urgent need for an opening and closing mechanism for a pipe drawing runway cover to solve the above problems. Summary of the Utility Model

[0004] The utility model provides an opening and closing mechanism for a pipe drawing runway cover, which solves the problems in the related art that the runway cover is heavy, very laborious to lift, and a heavy-duty drive element is also required.

[0005] The technical solution of the utility model is as follows: An opening and closing mechanism for a pipe drawing runway cover includes a base, a cover body, an opening shaft, a sliding frame, a counterweight, and a connecting block. The two ends of the cover body are respectively a first end and a second end. The second end of the cover body is hinged to the base. The opening shaft is movably arranged relative to the base. The sliding frame is slidably arranged on the cover body. The counterweight and the connecting block are both arranged on the sliding frame. The connecting block is used to connect with the opening shaft.

[0006] After the sliding frame slides, the connecting block is located at the first end of the cover body, and the counterweight is located in the middle of the cover body, or the connecting block is located in the middle of the cover body, and the counterweight is located at the second end of the cover body. After the opening shaft moves, it is used to drive the cover body to swing.

[0007] Optionally, it further includes a steel wire rope. One end of the steel wire rope is hinged to the connecting block, and the other end has a hook, and the hook is used to connect with the opening shaft.

[0008] Optionally, there are multiple said cover bodies, and a hanging ring is further included. The hanging ring is arranged on the opening shaft. The number of the hanging rings is the same as and corresponds one by one to the number of the hooks. The hooks are used to hook the hanging rings, and the hooks are connected to the opening shaft by means of the hanging rings.

[0009] Optionally, a telescopic member is further included. One end of the telescopic member is hinged to the base, and the other end is hinged to the opening shaft. The telescopic member is located on the side where the second end of the cover body is located, and there are at least two telescopic members.

[0010] Optionally, the cover body is semi-circular.

[0011] Optionally, the cover body has a track, and both the counterweight block and the connecting block are slidably arranged in the track.

[0012] Optionally, a buffer layer is further included. The buffer layer is arranged on the side walls at both ends of the track.

[0013] Optionally, legs are further included. The legs are arranged at the bottom of the base, and there are multiple legs.

[0014] Optionally, a pulling tube space is formed between the cover body and the base.

[0015] Optionally, the hanging ring is threadedly connected to the opening shaft.

[0016] The working principle and beneficial effects of the present utility model are as follows:

[0017] In order to solve the problem that the cover body is heavy, a heavy-duty driving element is required, and the bearing components are prone to damage after a long time, a sliding frame is slidably arranged on the runway cover, a counterweight block and a connecting block are respectively arranged at both ends of the sliding frame, and the included angle between the counterweight block and the connecting block is about 90°. Through the sliding of the sliding frame, two states of the closed cover state and the open cover state can be switched. In the closed cover state, the connecting block is at the first end of the cover body, and the counterweight block is in the middle of the cover body. In the open cover state, the connecting block is in the middle of the cover body, and the counterweight block is at the second end of the cover body.

[0018] The opening shaft is movably arranged relative to the base, and the opening shaft can be connected to the connecting block, so as to drive the sliding of the sliding frame through the movement of the opening shaft and switch between the two states. When in the closed cover state, the counterweight block is in the middle of the cover body, and enough weight can be applied to the cover body to ensure the sealing performance. Because the counterweight block is provided, the weight of the cover body itself can be reasonably reduced; when in the open cover state, the counterweight block is located at the second end of the cover body. Since the hinge point between the cover body and the base is at the second end, most of the weight is cleverly distributed to the base. And at this time, the connecting block is in the middle of the cover body. Because most of the weight is distributed to the base through the second end of the cover body, by moving the opening shaft and applying a small pulling force to the connecting block, the opening of the cover can be realized.

[0019] By setting counterweights, sufficient weight can still be provided in the closed cover state to ensure sealing. When the cover is opened, the weight is transferred to the base, and there is no need to apply a large force to open the cover, which provides convenience for the lifting mechanism of the cover body, and solves the problems in the prior art that the cover body is heavy, heavy-duty driving components are required, and the load-bearing components are prone to damage after a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0021] Figure 1 FIG. is a schematic structural view of an opening and closing mechanism for a pipe-pulling runway cover at an angle;

[0022] Figure 2 is Figure 1 an enlarged view of part A in

[0023] Figure 3 FIG. is a schematic structural view of an opening and closing mechanism for a pipe-pulling runway cover at another angle;

[0024] Figure 4 is Figure 3 an enlarged view of part B in

[0025] In the figure: 1. Base, 2. Cover body, 3. Opening shaft, 4. Sliding frame, 5. Counterweight, 6. Connecting block, 7. Steel wire rope, 8. Hook, 9. Hanging ring, 10. Telescopic member, 11. Track, 12. Buffer layer, 13. Leg, 14. Pipe-pulling space. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, and other embodiments can also be obtained.

[0027] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0028] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] Referring to Figures 1 to 4 , which is the first embodiment of the present utility model, a opening and closing mechanism for a pipe-pulling runway cover is proposed, including a base 1, a cover body 2, an opening cover shaft 3, a sliding frame 4, a counterweight 5, and a connecting block 6. The two ends of the cover body 2 are respectively a first end and a second end. The second end of the cover body 2 is hinged to the base 1. The opening cover shaft 3 is movably arranged relative to the base 1. The sliding frame 4 is slidably arranged on the cover body 2. The counterweight 5 and the connecting block 6 are both arranged on the sliding frame 4. The connecting block 6 is used to connect with the opening cover shaft 3.

[0031] After the sliding frame 4 slides, the connecting block 6 is located at the first end of the cover body 2, the counterweight 5 is located in the middle of the cover body 2, or the connecting block 6 is located in the middle of the cover body 2, the counterweight 5 is located at the second end of the cover body 2. After the opening cover shaft 3 moves, it is used to drive the cover body 2 to swing.

[0032] In this embodiment, in order to solve the problem that the cover body 2 is relatively heavy, heavy-duty driving components are required, and the bearing components are prone to damage after a long time, a sliding frame 4 is slidably arranged on the runway cover, and a counterweight 5 and a connecting block 6 are respectively arranged at both ends of the sliding frame 4. The included angle between the counterweight 5 and the connecting block 6 is about 90°. By sliding the sliding frame 4, two states, namely the closed cover state and the open cover state, can be switched. In the closed cover state, the connecting block 6 is at the first end of the cover body 2, and the counterweight 5 is in the middle of the cover body 2. In the open cover state, the connecting block 6 is in the middle of the cover body 2, and the counterweight 5 is at the second end of the cover body 2.

[0033] The opening shaft 3 is movably arranged relative to the base 1, and the opening shaft 3 can be connected to the connecting block 6, so as to drive the sliding of the sliding frame 4 through the movement of the opening shaft 3 and switch between two states. When in the closed cover state, the counterweight 5 is located in the middle of the cover body 2, and can apply sufficient weight to the cover body 2, thereby ensuring the sealing performance. Because the counterweight 5 is provided, the weight of the cover body 2 itself can be reasonably reduced; when in the open cover state, the counterweight 5 is located at the second end of the cover body 2. Since the hinge point between the cover body 2 and the base 1 is at the second end, most of the weight is cleverly distributed to the base 1. At this time, the connecting block 6 is located in the middle of the cover body 2. Because most of the weight is distributed to the base 1 through the second end of the cover body 2, by moving the opening shaft 3, a small pulling force is applied to the connecting block 6, and the opening of the cover can be realized.

[0034] By setting the counterweight 5, sufficient weight can still be provided in the closed cover state to ensure the sealing performance. In the open cover state, the weight is transferred to the base 1, and a large force is not required to open the cover, which provides convenience for the lifting mechanism of the cover body 2 and solves the problem in the prior art that the cover body 2 is heavy, heavy-duty driving components are required, and the bearing components are easily damaged after a long time.

[0035] It further includes a steel wire rope 7. One end of the steel wire rope 7 is hinged to the connecting block 6, and the other end has a hook 8, and the hook 8 is used to connect to the opening shaft 3.

[0036] There are multiple cover bodies 2, and it further includes hanging rings 9. The hanging rings 9 are arranged on the opening shaft 3. The number of the hanging rings 9 is the same as and corresponds to the number of the hooks 8 one by one. The hooks 8 are used to hook the hanging rings 9, and the hooks 8 are connected to the opening shaft 3 by means of the hanging rings 9.

[0037] In this embodiment, the connecting block 6 and the opening shaft 3 are connected through the steel wire rope 7. The bottom end of the steel wire rope 7 is hinged to the connecting block 6 through a rigid mounting block. A hook 8 is arranged at the top end of the steel wire rope 7, and hanging rings 9 are arranged on the opening shaft 3. The connection between the connecting block 6 and the opening shaft 3 is realized by hanging the hook 8 on the corresponding hanging ring 9. Since the steel wire rope 7 is a flexible body, the soft connection between the hook 8 and the hanging ring 9 can be realized, which is more convenient during hooking. When the opening shaft 3 moves, a pulling force is applied to the connecting block 6 through the steel wire rope 7, so as to realize the sliding of the sliding frame 4. In addition, there are multiple cover bodies 2, and each cover body 2 has a hook 8, and the corresponding number of hanging rings 9 are also arranged on the opening shaft 3. Whether to connect the hook 8 and the hanging ring 9 can be selected according to the actual situation, so as to realize the effect of lifting some cover bodies 2 alone or lifting several cover bodies 2 at the same time.

[0038] It further includes a telescopic member 10. One end of the telescopic member 10 is hinged to the base 1, and the other end is hinged to the opening shaft 3. The telescopic member 10 is located on the side where the second end of the cover body 2 is located, and there are at least two telescopic members 10.

[0039] In this embodiment, a telescopic member 10 is used to drive the opening and closing of the cover body 2. The driving element for lifting the cover body 2 is preferably a hydraulic cylinder. The top end of the hydraulic cylinder is hinged to the base 1, and the bottom end is hinged to the opening shaft 3. To ensure the stability of the movement of the opening shaft 3, the number of hydraulic cylinders is set to several according to the actual situation, but at least two. When opening the cover, the hydraulic cylinder provides a pulling force to the connecting block 6 through the opening shaft 3 and the steel wire rope 7, so that the sliding frame 4 slides to the open cover state, and the counterweight 5 slides to the second end of the cover body 2. When closing the cover, the hydraulic cylinder provides a pushing force to the connecting block 6 through the opening shaft 3 and the steel wire rope 7, so that the sliding frame 4 resets to the closed cover state, and the counterweight 5 slides to the middle of the cover body 2.

[0040] The cover body 2 is semi-circular.

[0041] The cover body 2 is provided with a track 11, and both the counterweight 5 and the connecting block 6 are slidably arranged in the track 11.

[0042] In this embodiment, the cover body 2 is preferably semi-circular, which can be adapted to the cylindrical shape of the pipe body, providing sufficient space for pipe pulling and facilitating the setting of the track 11. It is convenient to design the track 11 as an arc, and the arc-shaped track 11 can ensure the stable and smooth sliding of the counterweight 5 and the connecting block 6.

[0043] It further includes a buffer layer 12, and the buffer layer 12 is arranged on the side walls at both ends of the track 11.

[0044] In this embodiment, since the counterweight 5 is heavy, and every time the counterweight 5 slides to the second end of the cover body 2, a certain impact force will be generated due to the collision, which is likely to cause damage to the track 11 after a long time. Therefore, buffer layers 12 are designed on the inner side walls at both ends of the track 11. The buffer layer 12 is made of a flexible material, which can well absorb shock and energy, thereby reducing the impact force generated by the counterweight 5 and ensuring the service life of the track 11.

[0045] It further includes legs 13, and the legs 13 are arranged at the bottom of the base 1, and there are multiple legs 13.

[0046] A pipe pulling space 14 is formed between the cover body 2 and the base 1.

[0047] The hanging ring 9 is threadedly connected to the opening shaft 3.

[0048] In this embodiment, in order to ensure the stability of the equipment during operation, a plurality of legs 13 are provided at the bottom of the base 1, and the plurality of legs 13 are evenly distributed to ensure stable supporting force. A pulling pipe space 14 is formed between the cover body 2 and the base 1, so as to facilitate the pipe body, ensure good heat preservation performance, and ensure the processing quality of the pipe body. A through hole is designed at the end of the cover body 2 for the pipe body to pass through. The hanging ring 9 is installed on the opening shaft 3 by means of threaded connection. Since the hanging ring 9 is a key load-bearing component, the probability of damage here is relatively high. Therefore, the installation method of the hanging ring 9 is designed as threaded connection, which can realize the individual disassembly of each of the plurality of hanging rings 9, thus facilitating the carrying out of maintenance work.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An opening and closing mechanism for a pull-tube runway cover, characterized in that: The cover (2) comprises a base (1), a cover body (2), a cover opening shaft (3), a sliding frame (4), a counterweight (5) and a connecting block (6), wherein the cover body (2) has a first end and a second end at two ends respectively, the second end of the cover body (2) is hinged to the base (1), the cover opening shaft (3) is movably arranged relative to the base (1), the sliding frame (4) is slidably arranged on the cover body (2), the counterweight (5) and the connecting block (6) are both arranged on the sliding frame (4), and the connecting block (6) is used to be connected to the cover opening shaft (3). After the sliding frame (4) slides, the connecting block (6) is located at the first end of the cover body (2), and the counterweight block (5) is located in the middle of the cover body (2), or the connecting block (6) is located in the middle of the cover body (2), and the counterweight block (5) is located at the second end of the cover body (2), and after the cover opening shaft (3) moves, it is used to drive the cover body (2) to swing.

2. The opening and closing mechanism for a pull-tube runway cover according to claim 1, characterized in that: It also comprises a steel wire rope (7), one end of which is hinged to the connecting block (6), and the other end of which has a hook (8), and the hook (8) is used to be connected to the cover opening shaft (3).

3. The opening and closing mechanism for a pull-tube runway cover according to claim 2, characterized in that: The cover body (2) is provided in a plurality of pieces, and further comprises a hanging ring (9), wherein the hanging ring (9) is arranged on the cover opening shaft (3), the number of the hanging rings (9) is the same as the number of the hooks (8) and corresponds one to one, the hooks (8) are used to hook the hanging rings (9), and the hooks (8) are connected to the cover opening shaft (3) by means of the hanging rings (9).

4. The opening and closing mechanism for a pull-tube runway cover according to claim 3, characterized in that: It also comprises a telescopic member (10), one end of the telescopic member (10) being hinged to the base (1), and the other end being hinged to the cover opening shaft (3), the telescopic member (10) being located on the side where the second end of the cover body (2) is located, and there are at least two telescopic members (10).

5. The opening and closing mechanism for a pull-tube runway cover according to claim 1, characterized in that: The cover body (2) is semicircular.

6. The opening and closing mechanism for a pull-tube runway cover according to claim 5, characterized in that: The cover body (2) is provided with a track (11), and the counterweight block (5) and the connecting block (6) are both slidably arranged in the track (11).

7. The opening and closing mechanism for a pull-tube runway cover according to claim 6, characterized in that: It also comprises a buffer layer (12), wherein the buffer layer (12) is arranged on the side walls of both ends of the track (11).

8. The opening and closing mechanism for a pull-tube runway cover according to claim 1, characterized in that: It also comprises a supporting leg (13), wherein the supporting leg (13) is arranged at the bottom of the base (1), and there are a plurality of supporting legs (13).

9. The opening and closing mechanism for a pull-tube runway cover according to claim 1, characterized in that: A tube drawing space (14) is formed between the cover body (2) and the base (1).

10. The opening and closing mechanism for a pull-tube runway cover according to claim 3, characterized in that: The hanging ring (9) is threadedly connected to the cover opening shaft (3).

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