Fork-shaped tamping pick and tamping device

Abstract

The fork-shaped tamping pickaxe comprises a pickaxe handle connected with a tamping device pickaxe arm, a connecting plate, a left side plate and a right side plate, the left side plate and the right side plate are installed below the connecting plate, pickaxe palms are installed at the lower end of the left side plate and the lower end of the right side plate respectively, and the connecting plate, the left side plate and the right side plate are of a split type structure or an integrated bent structure. The tamping pickaxe is of a fork-shaped structure with one pickaxe handle and two pickaxe palms, is different from an existing single-pickaxe-handle and single-pickaxe-palm form, can be formed through welding or integral casting, and has high abrasion resistance and long service life.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and more specifically, to a tamping device for railway track maintenance machinery, and in particular to a tamping pick for the tamping device. Background Art

[0002] During tamping operation, the tamping pick is inserted into the track bed to apply vibration and clamping forces to the ballast. Since the track bed is a granular structure, its physical and mechanical properties are very complex. The tamping pick has to withstand a large downward impact force at the moment of insertion into the track bed, and has to withstand vibration force and clamping bending moment during the vibration clamping process. Therefore, the tamping pick is required to have sufficient strength, impact resistance, wear resistance and other properties. In addition, the clamping effect of the tamping pick palm is required to achieve the extrusion of the ballast in the sleeper interval to the bottom of the rail, thereby making the ballast at the bottom of the sleeper dense and improving the stability of the track. Therefore, the size and action point of the pick palm and the ballast action surface play an important role in the tamping quality.

[0003] However, the inventor of the present application has found that the current tamping pick equipment is usually in the form of an integral single pick handle and single pick palm, which is made by casting or die forging, such as Figure 1 As shown; this type of small tamping device usually uses a single tamping pick, that is, there is a single tamping pick on one side of the rail, the operation efficiency is low, the number of insertions is large, and the tamping cost is high. Summary of the invention

[0004] In response to the above technical problems, the present application provides a fork-shaped tamping pick, which solves the technical problems of narrow tamping width and low efficiency in the prior art, reduces the number of tamping insertions, and improves work efficiency.

[0005] The present application provides a fork-shaped tamping pick, comprising a pick handle connected to the pick arm of a tamping device, a connecting plate, a left plate and a right plate installed below the connecting plate, wherein pick palms are respectively installed at the lower ends of the left plate and the right plate, and the connecting plate and the left plate and the right plate are a split structure or an integrated bending structure.

[0006] Preferably, the pick handle is a conical columnar structure from top to bottom, and a step connected to the connecting plate is provided at the bottom.

[0007] Preferably, a mounting hole is opened in the middle of the connecting plate, and the step of the pick handle is embedded in the mounting hole and fixed.

[0008] Preferably, it also includes a reinforcing plate fixed to the bottom of the pick handle connecting plate, one end of the reinforcing plate is fixed to the inner side of the left side plate, and the other end is fixed to the inner side of the right side plate.

[0009] Preferably, the pickaxe palm is centrally arranged relative to the left side plate and the right side plate, and the pickaxe palm is wide at the top and narrow at the bottom, and the front side forms an acute angle with respect to the center line of the pickaxe handle.

[0010] Preferably, it also includes a surfacing wear-resistant layer arranged at the connection between the pick palm and the left and right side plates and the outer edge of the pick palm.

[0011] Preferably, the pick handle is made of high-strength alloy structural steel, and the connecting plate, the left side plate, the right side plate, the left pick palm and the right pick palm are made of wear-resistant steel plates.

[0012] Preferably, the step of the pick handle is embedded in the mounting hole of the connecting plate and then fixed by welding.

[0013] Preferably, the left side plate and the right side plate are welded to both ends of the connecting plate or are bent integrally with the connecting plate, the upper part of the reinforcing plate is welded to the bottom of the connecting plate, and the left and right sides thereof are fixedly welded to the left side plate and the right side plate respectively.

[0014] The present application also provides a tamping device, comprising a fork-shaped tamping pick connected to the pick arm of the tamping device, wherein the fork-shaped tamping pick is the fork-shaped tamping pick mentioned above.

[0015] The technical solution provided by this application has at least the following technical effects or advantages:

[0016] 1. The tamping pick of the present application is a fork-shaped structure with one pick handle and two pick palms, which is different from the current single pick handle and single pick palm form. It can be formed by welding or integral casting, and has high wear resistance and service life.

[0017] 2. The double-pick design of the tamping device of the present application increases the tamping width, allows the ballast to be more evenly distributed, and can form two load-bearing cores to ensure the compactness of the bottom of the rail, improve the stability and carrying capacity of the track. Combined with the existing small tamping device, it can achieve better tamping quality than the existing single-pick tamping pick, reduce the number of tamping insertions, speed up the tamping operation, improve the tamping efficiency and save the overall tamping operation cost.

[0018] 3. The handle of the fork-shaped tamping pick of the present application is consistent in size with the handle of the single-pick tamping pick, which is convenient for switching according to different ballast working conditions. After tamping with the fork-shaped tamping pick, the density of the ballast under the pillow is higher than that of the currently used single pick, and the tamping quality is good.

[0019] 4. The handle of the tamping pick of the present application is made of high-strength alloy structural steel, the connecting plate and the pick palm are made of high-wear-resistant steel plates, and wear-resistant surfacing is performed on the edge of the pick palm and the weld between the pick palm and the connecting plate. The tamping pick has good structural strength and toughness, which further increases the wear resistance and service life of the tamping pick.

[0020] 5. The shape design of the fork-shaped tamping pick of the present application facilitates insertion into the ballast, reduces the resistance and impact of the ballast, and thus reduces wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of a single pickaxe structure of the prior art;

[0022] Figure 2 This is a schematic diagram of the installation structure of the fork-shaped tamping pick in the embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of a fork-shaped tamping pick in an embodiment of the present application;

[0024] Figure 4 This is a front view of the structure of a fork-shaped tamping pick in an embodiment of the present application;

[0025] Figure 5 This is a structural view of the handle of a fork-shaped tamping pick in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] This embodiment provides a fork-shaped tamping pick, such as Figure 2-5 As shown, the ramming pick can be integrally cast or welded. If the welding technology is adopted, the structure includes a pick handle 1, a connecting plate 2, a left side plate 3, a right side plate 4, a reinforcing plate 5, a left pick palm 6, a right pick palm 7, and a surfacing wear-resistant layer 8, wherein the pick handle connecting plate 2, the left side plate 3 and the right side plate 4 can be integrated and formed by bending.

[0028] The pick handle 1 is cone-shaped from top to bottom, and the top forms a conical surface with the pick arm of the tamping device, achieving the advantages of large contact area, high load-bearing capacity, and rapid separation when unloading the pick. The bottom of the pick handle 1 is a stepped cylinder, and a round hole is opened on the pick handle connecting plate 2. The stepped cylinder on the pick handle 1 is embedded in the round hole on the pick handle connecting plate 2 for installation, and is welded and fixed at the top and bottom.

[0029] Preferably, the left side plate 3 and the right side plate 4 in this embodiment are welded to both sides of the pick handle connecting plate 2 or are bent into one piece with the pick handle connecting plate 2. Their shape is larger at the top and smaller at the bottom with a certain arc transition in the middle to facilitate reducing the ballast resistance during insertion.

[0030] Preferably, in this embodiment, the upper portion of the reinforcing plate 5 is welded to the bottom of the pick handle connecting plate 2, and the left and right sides are respectively welded to the left plate 3 and the right plate 4, to play a reinforcing role.

[0031] Preferably, in this embodiment, the left pick palm 6 and the right pick palm 7 are respectively welded to the left side plate 3 and the right side plate 4, and are arranged centrally relative to the left side plate 3 and the right side plate 4. The pick palm 6 and the pick palm 7 are wide at the top and narrow at the bottom, which is conducive to inserting the ballast, and the front side forms an acute angle with respect to the center line of the pick handle 1, which is convenient for inserting and clamping the ballast.

[0032] Preferably, in this embodiment, a wear-resistant layer 8 is built-up at the weld connection position and the edge of the pick 6 to increase the weld metal and further enhance the wear resistance of the pick.

[0033] Preferably, the pick handle 1 in this embodiment is made of high-strength alloy structural steel, which has high strength and toughness.

[0034] Preferably, in the present embodiment, the pick handle connecting plate 2, the left side plate 3, the right side plate 4, the left pick palm 6 and the right pick palm 7 are made of wear-resistant steel plates and have high strength and excellent toughness and wear resistance.

[0035] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present application, and these improvements should also be regarded as the scope of protection of the present application.

Claims

1. A fork-shaped tamping pick, characterized in that: It comprises a pick handle (1) connected to a pick arm of a tamping device, a connecting plate (2), a left side plate (3) and a right side plate (4) installed below the connecting plate (2), wherein the lower ends of the left side plate (3) and the right side plate (4) are respectively installed with a pick palm; The pickaxe handle (1), the connecting plate (2), the left side plate (3) and the right side plate (4) are an integrated structure. Alternatively, the connecting plate (2) and the left side plate (3) and the right side plate (4) are of a split structure or an integrated bent structure.

2. The fork-shaped tamping pick according to claim 1, characterized in that: The pickaxe handle (1) is in a conical columnar structure from top to bottom, and is provided with a step at the bottom that is connected to the connecting plate (2).

3. The fork-shaped tamping pick according to claim 2, characterized in that: A mounting hole is provided in the middle of the connecting plate (2), and the step of the pick handle (1) is embedded in the mounting hole and fixed.

4. The fork-shaped tamping pick according to claim 1, characterized in that: It also includes a reinforcing plate (5) fixed to the bottom of the connecting plate (2), wherein one end of the reinforcing plate (5) is fixed to the inner side of the left side plate (3), and the other end of the reinforcing plate (5) is fixed to the inner side of the right side plate (4).

5. The fork-shaped tamping pick according to claim 1, characterized in that: The pickaxe palm is centrally arranged relative to the left side plate (3) and the right side plate (4); the pickaxe palm is wide at the top and narrow at the bottom, and the front side forms an acute angle with the center line of the pickaxe handle (1).

6. The fork-shaped tamping pick according to claim 1, characterized in that: It also includes a surfacing wear-resistant layer (8) arranged at the connection between the pick palm and the left and right side plates and the outer edge of the pick palm.

7. The fork-shaped tamping pick according to claim 1, characterized in that: The pick handle (1) is made of high-strength alloy structural steel, and the connecting plate (2), the left side plate (3), the right side plate (4), the left pick palm (6) and the right pick palm (7) are made of wear-resistant steel plates.

8. The fork-shaped tamping pick according to claim 3, characterized in that: The step of the pick handle (1) is embedded in the mounting hole of the connecting plate (2) and fixed by welding.

9. The fork-shaped tamping pick according to claim 4, characterized in that: The left side plate (3) and the right side plate (4) are welded to the two ends of the connecting plate (2) or are formed by being bent integrally with the connecting plate (2); the upper portion of the reinforcing plate (5) is welded to the bottom of the connecting plate (2), and the left and right sides thereof are fixedly welded to the left side plate (3) and the right side plate (4) respectively.

10. A tamping device, characterized in that: It comprises a fork-shaped tamping pick connected to the pick arm of the tamping device, and the fork-shaped tamping pick is the fork-shaped tamping pick as described in any one of claims 1-9.

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