Chain tightener of scraper conveyor

Abstract

The utility model discloses a chain tightener of a scraper conveyor, and belongs to the field of chain tighteners, the chain tightener comprises a base, tensioning assemblies are arranged on the left side and the right side of the base, each tensioning assembly comprises two supporting seats, and the two supporting seats are fixedly connected with the left side and the right side of the base correspondingly; hydraulic push rods are fixedly connected to the inner surfaces of the two supporting seats, pushing pieces are fixedly connected to the ends, facing the base, of the hydraulic push rods, sliding sleeves are fixedly connected to the lower portions of the pushing pieces, limiting pieces are fixedly connected to the upper portions of the sliding sleeves, the outer surfaces of the limiting pieces are movably sleeved with pressing plates, and fixing rods are fixedly connected to the lower portions of the pressing plates. According to the chain tensioning device, the chain of the scraper conveyor is tensioned by arranging the tensioning assembly, the tensioning assembly can be clamped into the gap in the chain so as to pull the chain, and the chain tensioning device has the effect of conveniently and stably tensioning the chain.

Description

Technical Field

[0001] This application relates to the field of chain tensioners, and more specifically, to a chain tensioner for a scraper conveyor. Background Technology

[0002] A scraper conveyor is a conveyor that uses a scraper chain to transport bulk materials within a trough. Currently, when splicing or closing the scraper conveyor chain, manual chain hoists or rotating machines are commonly used.

[0003] Patent document CN205387335U discloses a chain tensioner for a scraper conveyor. This chain tensioner includes a fixing point, a vertical rod, and a tensioning jack. The tensioning jack comprises an outlet pipe, an inlet pipe, a first piston, and a second piston. The fixing point is fixed to the chain of the scraper conveyor, with a chute below the chain. The fixing point is fixedly connected to the vertical rod, which has fixing points at both ends. The vertical rod has a wire hole through which a steel wire passes, connecting to a pressure indicator. The other end of the pressure indicator is connected to the first piston, and the second piston is connected to another vertical rod via a steel wire. The aforementioned application uses fixing screws and plates to clamp the chain and tighten it. However, the chain surface is smooth, and while clamping and tightening the chain, the chain may slip, making it difficult to more stably fix and tighten the chain. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a chain tensioner for a scraper conveyor, solving the problems mentioned in the background section. To achieve the above objectives, this utility model is implemented through the following technical solution: A chain tensioner for a scraper conveyor includes a base. Tensioning components are arranged on the left and right sides of the base. Each tensioning component includes two support seats, which are respectively fixedly connected to the left and right sides of the base. Hydraulic push rods are fixedly connected to the inner surfaces of the two support seats. A pushing plate is fixedly connected to one end of the hydraulic push rod facing the base. A sliding sleeve is fixedly connected below the pushing plate. A limiting plate is fixedly connected above the sliding sleeve. A pressure plate is movably sleeved on the outer surface of the limiting plate. A fixing rod is fixedly connected below the pressure plate.

[0005] Preferably, the tensioning assembly further includes a support plate, which is fixedly connected to the outer surface of the sliding sleeve.

[0006] Preferably, sliding columns are fixedly connected to the left and right sides of the base, and the sliding columns are slidably connected to the inner surface of the sliding sleeve.

[0007] Preferably, a pushing component is provided above the support base. The pushing component includes a support frame, which is fixedly connected to the top of the support base. An electric push rod is fixedly connected to the top of the inner surface of the support frame, and a sliding component is provided below the electric push rod.

[0008] Preferably, the sliding component includes a sliding frame that extends through the right side of the pressure plate.

[0009] Preferably, the sliding assembly further includes a top plate, which is fixedly connected to the lower end of the electric push rod and to the outer surface of the sliding frame.

[0010] The advantages of this application are:

[0011] (1) This application uses a tensioning component to tighten the chain of the scraper conveyor. The tensioning component can be inserted into the gap on the chain to pull the chain, which facilitates the stable tightening of the chain.

[0012] (2) This application pushes the sliding component to descend so that the tensioning component can simultaneously fix or loosen both ends of the chain. While the tensioning component tightens the chain, it can slide stably on the sliding component, which facilitates quick fixation of both ends of the chain. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a right view of the overall structure of this utility model;

[0016] Figure 3 This is a top view of the overall structure of this utility model;

[0017] Figure 4 This is the utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the above image,

[0019] 1. Base; 2. Tensioning assembly; 201. Support seat; 202. Hydraulic push rod; 203. Push plate; 204. Sliding sleeve; 205. Limiting plate; 206. Pressure plate; 207. Fixing rod; 208. Support plate; 3. Sliding column; 4. Pushing assembly; 401. Support frame; 402. Electric push rod; 5. Sliding assembly; 501. Sliding frame; 502. Top plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Example 1

[0023] See Figures 1-4 This embodiment provides a chain tensioner for a scraper conveyor, including a base 1. Tensioning components 2 are arranged on the left and right sides of the base 1. Each tensioning component 2 includes a support seat 201, which is L-shaped. There are two support seats 201, each fixedly connected to the left and right sides of the base 1. Hydraulic push rods 202 are fixedly connected to the inner surfaces of the two support seats 201. A pushing plate 203 is fixedly connected to the end of the hydraulic push rod 202 facing the base 1. A sliding sleeve 204, which is U-shaped, is fixedly connected below the pushing plate 203. A limiting piece 205 is fixedly connected above the sliding sleeve 204. A pressure plate 206 is movably fitted onto the outer surface of the limiting piece 205. The pressure plate 206 has a directional opening for fitting onto the limiting piece 205. The pressure plate 206 can slide up and down on the limiting piece 205. A fixing rod 207 is fixedly connected below the pressure plate 206. The tensioning assembly 2 also includes a support plate 208, which is fixedly connected to the outer surface of the sliding sleeve 204. The support plate 208 is located on the front and rear sides of the sliding sleeve 204. Sliding columns 3 are fixedly connected to the left and right sides of the base 1. Sliding grooves are provided on the front and rear sides of the sliding columns 3. The sliding columns 3 are slidably connected to the inner surface of the sliding sleeve 204, and the sliding sleeve 204 can slide left and right on the sliding columns 3.

[0024] In practical use, the above equipment is first placed on the scraper conveyor, and then the two ends of the chain to be tightened are placed on the support plate 208. At this time, the electric push rod 402 is activated to push the sliding frame 501 down. As the sliding frame 501 descends, the pressure plate 206 slides down on the limit plate 205. The descent of the pressure plate 206 will drive the fixing rod 207 down until the fixing rod 207 is in contact with the top of the support plate 208. The fixing rod 207 will pass through the gap on the chain, thereby fixing the chain. At this time, the hydraulic push rod 202 is activated. The hydraulic push rod 202 will push the push plate 203 to make the sliding sleeve 204 slide towards the base 1 on the sliding column 3. The sliding of the sliding sleeve 204 will drive the pressure plate 206 and the fixing rod 207 to pull the chain, bringing the two ends of the chain closer together, thereby tightening the chain.

[0025] Example 2

[0026] See Figures 1-4 Based on Embodiment 1, a pushing component 4 is provided above the support base 201. The pushing component 4 includes a support frame 401, which is L-shaped and fixedly connected to the upper part of the support base 201. An electric push rod 402 is fixedly connected to the top of the inner surface of the support frame 401. There are two support frames 401 and two electric push rods 402. A sliding component 5 is provided below the electric push rods 402. The sliding component 5 includes a sliding frame 501, which is U-shaped and movably passes through the right side of the pressure plate 206. The pressure plate 206 is provided with a through hole for accommodating the sliding frame 501. The sliding component 5 also includes two top pieces 502. The top pieces 502 are fixedly connected to the lower end of the electric push rod 402 and fixedly connected to the outer surface of the sliding frame 501. The two top pieces 502 are respectively provided at the left and right ends of the sliding frame 501.

[0027] In practical use, when the hydraulic push rod 202 pushes the push plate 203 to move the pressure plate 206 on the sliding sleeve 204, the pressure plate 206 will slide on the outer surface of the sliding frame 501. The two pressure plates 206 will always keep the chain fixed. When it is necessary to loosen the chain, the electric push rod 402 is activated to retract it. The electric push rod 402 will pull the top plate 502 to raise the sliding frame 501. The sliding frame 501 will drive the two pressure plates 206 and the fixing rod 207 to rise, so that the fixing rod 207 can be pulled out from the gap on the chain.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A chain tensioner for a scraper conveyor, comprising a base (1), characterized in that, The base (1) is provided with tensioning components (2) on the left and right sides. The tensioning components (2) include support seats (201). There are two support seats (201). The two support seats (201) are fixedly connected to the left and right sides of the base (1) respectively. The inner surfaces of the two support seats (201) are fixedly connected with hydraulic push rods (202). The end of the hydraulic push rod (202) facing the base (1) is fixedly connected with a push plate (203). The push plate (203) is fixedly connected with a sliding sleeve (204) below. The sliding sleeve (204) is fixedly connected with a limiting plate (205) above. The outer surface of the limiting plate (205) is movably fitted with a pressure plate (206). The pressure plate (206) is fixedly connected with a fixing rod (207) below.

2. The chain tensioner for a scraper conveyor according to claim 1, characterized in that, The tensioning assembly (2) also includes a support plate (208), which is fixedly connected to the outer surface of the sliding sleeve (204).

3. The chain tensioner for a scraper conveyor according to claim 2, characterized in that, The base (1) is fixedly connected to sliding columns (3) on the left and right sides, and the sliding columns (3) are slidably connected to the inner surface of the sliding sleeve (204).

4. A chain tensioner for a scraper conveyor according to claim 3, characterized in that, A pushing component (4) is provided above the support base (201). The pushing component (4) includes a support frame (401). The support frame (401) is fixedly connected to the support base (201). An electric push rod (402) is fixedly connected to the top of the inner surface of the support frame (401). A sliding component (5) is provided below the electric push rod (402).

5. A chain tensioner for a scraper conveyor according to claim 4, characterized in that, The sliding component (5) includes a sliding frame (501) which is movably connected to the right side of the pressure plate (206).

6. A chain tensioner for a scraper conveyor according to claim 5, characterized in that, The sliding assembly (5) also includes a top plate (502), which is fixedly connected to the lower end of the electric push rod (402) and fixedly connected to the outer surface of the sliding frame (501).

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