A push-pull type guardrail for a reclaimer

Abstract

The utility model discloses a kind of transfer machine push-pull type guardrails, it is related to transfer machine protection technical field, including guide rail, the inside of guide rail is respectively connected with multiple rollers rolling, and the side wall of guide rail is respectively provided with two sliding slots, two rollers are fixedly connected with support rod between, and the bottom of support rod is fixedly connected with U-shaped rod, telescopic mechanism is rotatably connected between two U-shaped rods, and the top of U-shaped rod is fixedly connected with moving rod, the both ends of moving rod are slidably connected with the inside of sliding slot, the inside top of guide rail is respectively provided with two limit hole one and limit hole two, the inside of two support rods is provided with limiting mechanism, the utility model cooperates through U-shaped rod and telescopic mechanism, constitutes a set of push-pull type guardrails, the guardrail does not need to be disassembled from guide rail, can be smoothly extended on guide rail, forms an effective protective barrier, can also be conveniently shrunk to guide rail side, and further improve space utilization.

Description

Technical Field

[0001] This utility model relates to the field of transfer machine protection technology, specifically a push-pull guardrail for transfer machines. Background Technology

[0002] Transfer conveyors, also known as scraper transfer conveyors for roadways, are a crucial intermediate transport device in modern coal mining faces. With the development of efficient and streamlined coal mining faces, the safety protection of large equipment such as transfer conveyors has become increasingly prominent. Therefore, equipping them with dedicated guardrails is essential.

[0003] A search revealed that Chinese patent document (publication number: CN223523777U) discloses "a push-pull guardrail for a transfer machine, including a hanging rail and multiple protective nets located below the hanging rail and which can be folded and stretched, wherein the ends of the multiple protective nets are connected by hinges...". By suspending the protective nets below the hanging rail, no personnel are required to move them, thus preventing the situation where personnel deliberately move them away and do not use them.

[0004] However, the above-mentioned technologies still have certain shortcomings. Although the protective nets in these technologies are hinged at both ends, they are hinged on the same side rather than in an alternating manner. This design means that the protective nets must be fully unfolded before being installed on the guide rails, and cannot be installed directly in a folded state. The large size of the unfolded protective nets causes great inconvenience to on-site installation. Similarly, the protective nets cannot be folded on the guide rails afterward, so the protective nets are also in an unfolded state on the guide rails when not in use, which seriously affects the utilization of on-site space and work efficiency. To address these issues, we provide a push-pull guardrail for transfer machines. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a push-pull guardrail for a transfer machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a push-pull guardrail for a transfer machine, comprising a guide rail, wherein multiple rollers are rotatably connected inside the guide rail, and two sliding grooves are respectively opened on the side wall of the guide rail; a support rod is fixedly connected between the two rollers, and a U-shaped rod is fixedly connected to the bottom of the support rod; a telescopic mechanism is rotatably connected between the two U-shaped rods, and a moving rod is fixedly connected to the top of the U-shaped rod; both ends of the moving rod are slidably connected to the inside of the sliding groove; two limiting holes one and two limiting holes are respectively opened on the inner top of the guide rail; and a limiting mechanism is provided inside the two support rods.

[0007] The aforementioned telescopic mechanism includes a first connecting rod, a second connecting rod, a fixed rod, and a sliding rod. The first connecting rod and the second connecting rod are hinged to each other at their middle positions, and one end of the first connecting rod and the second connecting rod are rotatably connected to the outer walls of the two fixed rods, respectively. The other end of the first connecting rod and the second connecting rod are rotatably connected to the outer walls of the two sliding rods, respectively.

[0008] As described above, both ends of the fixing rod are fixedly connected to the U-shaped rod, and the bottom of the U-shaped rod is provided with a moving groove.

[0009] As mentioned above, both ends of the slide rod are slidably connected to the inside of the moving groove.

[0010] The aforementioned limiting mechanism includes a sleeve, a spring, and a limiting rod. The inner bottom of the sleeve is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the bottom end of the limiting rod. The outer wall of the limiting rod is slidably connected to the inner wall of the sleeve.

[0011] As described above, a pull rod is fixedly connected to the bottom end of the limiting rod, and one end of the pull rod passes through the sleeve and extends below it.

[0012] As described above, the limiting rods are respectively adapted to the shapes of limiting hole one and limiting hole two and are engaged therein.

[0013] Compared with existing technologies, this push-pull guardrail for transfer machines has the following advantages: I. This utility model forms a push-pull guardrail by combining a U-shaped rod with a telescopic mechanism. The guardrail can extend smoothly on the guide rail without being removed, forming an effective protective barrier. It can also be conveniently retracted to one side of the guide rail, thereby improving space utilization.

[0014] Second, this utility model uses a limiting mechanism to fix the unfolded state of the guardrail, preventing the guardrail from accidentally shrinking due to vibration, thus improving the stability of the guardrail's unfolding and eliminating potential safety hazards.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall planar structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the telescopic mechanism and its connecting parts of this utility model; Figure 4For the present utility model Figure 3 Enlarged 3D structural diagram at point A.

[0017] In the diagram: 1. Guide rail; 2. Slide groove; 3. Support rod; 4. U-shaped rod; 5. Telescopic mechanism; 501. Connecting rod one; 502. Connecting rod two; 503. Fixed rod; 504. Slide rod; 6. Moving rod; 7. Limiting hole one; 8. Limiting hole two; 9. Limiting mechanism; 901. Sleeve; 902. Spring; 903. Positioning rod; 10. Moving groove; 11. Pull rod; 12. Roller. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-4 As shown, this utility model provides a technical solution: a push-pull guardrail for a transfer machine, including a guide rail 1, with multiple rollers 12 rotatably connected inside the guide rail 1, and two sliding grooves 2 respectively opened on the side wall of the guide rail 1. A support rod 3 is fixedly connected between the two rollers 12, and a U-shaped rod 4 is fixedly connected to the bottom of the support rod 3. A telescopic mechanism 5 is rotatably connected between the two U-shaped rods 4, and a moving rod 6 is fixedly connected to the top of the U-shaped rod 4. Both ends of the moving rod 6 are slidably connected to the inside of the sliding groove 2. Two limiting holes 1 7 and 2 8 are respectively opened on the inner top of the guide rail 1, and a limiting mechanism 9 is provided inside the two support rods 3.

[0020] The telescopic mechanism 5 and the U-shaped rod 4 constitute a telescopic guardrail. Through the setting of the roller 12 and the moving rod 6, the roller 12 and the moving rod 6 can move within the guide rail 1 and the sliding groove 2 thereon, forming a dual guide of rolling and sliding. This composite guide improves the stable operation of the guardrail along the predetermined path. The two limiting holes 7 set at the left and right ends allow the two limiting rods 903 to be inserted into the limiting holes 7, thereby allowing the guardrail to be stably kept in its extended state. In addition, through the setting of the limiting holes 8, when the limiting rods 903 are inserted into the limiting holes 8, the guardrail can also be stably stored after it is fully retracted to one side of the guide rail 1, preventing it from sliding at will.

[0021] like Figure 1-3As shown, the telescopic mechanism 5 includes a first connecting rod 501, a second connecting rod 502, a fixed rod 503, and a sliding rod 504. The first connecting rod 501 and the second connecting rod 502 are hinged to each other at their middle positions, and one end of the first connecting rod 501 and the second connecting rod 502 is rotatably connected to the outer wall of the two fixed rods 503, respectively. The other end of the first connecting rod 501 and the second connecting rod 502 is rotatably connected to the outer wall of the two sliding rods 504, respectively. Both ends of the fixed rod 503 are fixedly connected to the U-shaped rod 4. The bottom of the U-shaped rod 4 is provided with a moving groove 10, and both ends of the sliding rod 504 are slidably connected to the inside of the moving groove 10.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, the middle hinge point of connecting rod 1 501 and connecting rod 2 502 serves as the center of motion, ensuring the synchronicity of their extension and retraction on both sides. The slide rod 504 slides in the moving groove 10 on the U-shaped rod 4, providing guidance for the expansion and contraction of connecting rod 1 501 and connecting rod 2 502, avoiding jamming during the movement, and making the entire guardrail's pushing and pulling action smooth and effortless.

[0023] The limiting mechanism 9 includes a sleeve 901, a spring 902, and a limiting rod 903. The inner bottom of the sleeve 901 is fixedly connected to one end of the spring 902, and the other end of the spring 902 is fixedly connected to the bottom end of the limiting rod 903. The outer wall of the limiting rod 903 is slidably connected to the inner wall of the sleeve 901. A pull rod 11 is fixedly connected to the bottom end of the limiting rod 903, and one end of the pull rod 11 passes through the sleeve 901 and extends below it. The limiting rod 903 is adapted to the shape of the limiting hole 7 and the limiting hole 8 and is inserted into them respectively.

[0024] The limiting mechanism 9 is installed at both ends of the guardrail, so that when it is unfolded, the guardrail has two stable support points along its entire length, which improves the stability and reliability of the guardrail protection.

[0025] Working principle: First, insert one of the limiting rods 903 on the support rod 3 into the rightmost limiting hole 7. Then, when the transfer machine is running, pull the U-shaped rod 4 from the rightmost end to the leftmost end of the guide rail 1 using the handle on the U-shaped rod 4. During the pulling of the U-shaped rod 4, connecting rod 1 501 and connecting rod 2 502 rotate in a cross-rotation manner. At this time, one end of connecting rod 1 501 and connecting rod 2 502 rotates on the fixed rod 503, and the other end of connecting rod 1 501 and connecting rod 2 502 rotates on the sliding rod 504. As the distance between the U-shaped rods 4 gradually increases, the included angle between connecting rod 1 501 and connecting rod 2 502 also increases, pushing the sliding rod 504. As the U-shaped rod 4 moves downward, after it is pulled open, the limiting rod 903 on the leftmost support rod 3 is aligned with the limiting hole 7, thereby fixing the left and right ends of the U-shaped rod 4 and limiting the extension and retraction position of the U-shaped rod 4. Finally, after the transfer machine stops working, the leftmost pull rod 11 is pulled, causing the pull rod 11 to move the limiting rod 903 away from the limiting hole 7. Then, the leftmost U-shaped rod 4 is moved to the right end of the guide rail 1 via the roller 12. At this time, under the restoring force of the spring 902, the limiting rod 903 is locked into the limiting hole 8, thereby retracting the U-shaped rod 4 to the right side of the guide rail 1.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A push-pull guardrail for a transfer machine, comprising a guide rail (1), characterized in that: The guide rail (1) is internally connected to multiple rollers (12), and the side wall of the guide rail (1) is provided with two sliding grooves (2). A support rod (3) is fixedly connected between the two rollers (12), and a U-shaped rod (4) is fixedly connected to the bottom of the support rod (3). A telescopic mechanism (5) is rotatably connected between the two U-shaped rods (4), and a moving rod (6) is fixedly connected to the top of the U-shaped rod (4). Both ends of the moving rod (6) are slidably connected to the inside of the sliding groove (2). The top of the guide rail (1) is provided with two limiting holes (7) and two limiting holes (8), and a limiting mechanism (9) is provided inside the two support rods (3).

2. The push-pull guardrail for a transfer machine according to claim 1, characterized in that: The telescopic mechanism (5) includes a first connecting rod (501), a second connecting rod (502), a fixed rod (503), and a sliding rod (504). The first connecting rod (501) and the second connecting rod (502) are hinged to each other at their middle positions, and one end of the first connecting rod (501) and the second connecting rod (502) are rotatably connected to the outer walls of the two fixed rods (503), respectively. The other end of the first connecting rod (501) and the second connecting rod (502) are rotatably connected to the outer walls of the two sliding rods (504), respectively.

3. A push-pull guardrail for a transfer machine according to claim 2, characterized in that: Both ends of the fixed rod (503) are fixedly connected to the U-shaped rod (4), and the bottom of the U-shaped rod (4) is provided with a moving groove (10).

4. A push-pull guardrail for a transfer machine according to claim 3, characterized in that: Both ends of the slide bar (504) are slidably connected to the inside of the moving groove (10).

5. A push-pull guardrail for a transfer machine according to claim 1, characterized in that: The limiting mechanism (9) includes a sleeve (901), a spring (902) and a limiting rod (903). The inner bottom of the sleeve (901) is fixedly connected to one end of the spring (902), and the other end of the spring (902) is fixedly connected to the bottom end of the limiting rod (903). The outer wall of the limiting rod (903) is slidably connected to the inner wall of the sleeve (901).

6. A push-pull guardrail for a transfer machine according to claim 5, characterized in that: The bottom end of the limiting rod (903) is fixedly connected to a pull rod (11), and one end of the pull rod (11) passes through the sleeve (901) and extends below it.

7. A push-pull guardrail for a transfer machine according to claim 6, characterized in that: The limiting rod (903) is adapted to the shape of the limiting hole one (7) and the limiting hole two (8) and is inserted into them respectively.

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