A chisel blade assembly

Abstract

A kind of chisel blade assembly, including blade body, pin hole is opened in blade body, the preset number of pin hole is set in turn along the length direction of blade body length direction setting chisel includes tooth body, the upper end surface of tooth body is set with limiting plate in fixed structure mode, two opposite limiting plates are respectively set on the both sides of blade body, recess is opened in the side wall of limiting plate, positioning pin includes the pin rod and pin head connected in fixed structure mode, pin rod is inserted in pin hole, pin head is engaged and is set between two adjacent recess, pin sleeve is set on the other side of blade body away from pin head, pin sleeve is detachably set on pin rod, pin sleeve is engaged and is set between two adjacent recess, to fix chisel with blade body;Pin rod and pin hole are connected, pin head cooperates with recess, chisel is quickly installed on blade body, without welding work, and chisel is replaced more quickly.

Description

Technical fields:

[0001] This application relates to the field of shovel tooth technology, and in particular to a shovel tooth blade assembly. Background technology:

[0002] Shovel teeth, also known as bucket teeth, are installed on the front end of a bucket, digging bucket, or grader scraper. They provide some protection for the bucket, digging bucket, and scraper, while also allowing for more precise operation and improving work efficiency. One type of shovel tooth or bucket tooth includes a tooth base and a tooth tip. The tooth base is welded to the blade, and the tooth base and tooth tip are connected by a pin, as shown in application number CN201410779405.X. Another type is shown in invention patent application CN201710899584.4—a grader rear scraper, whose blade assembly includes a blade and multiple sets of teeth. The teeth are welded to the blade, and each tooth includes a tooth sleeve, an elastic sleeve disposed within the tooth sleeve, and a cutter head disposed within the elastic sleeve.

[0003] The above-mentioned existing technologies all require welding the tooth base or tooth sleeve onto the shovel tooth, bucket tooth, or blade, which is relatively complicated to install; and the tooth tip or cutter head is a consumable part that requires frequent maintenance and replacement, and each maintenance and replacement is relatively complicated and lengthy, which seriously reduces the operating efficiency and economic benefits of construction machinery. Summary of the Invention:

[0004] To address the aforementioned technical problems, this invention provides a shovel tooth blade assembly. The technical problems solved are: the need to weld the tooth base or tooth sleeve onto the shovel tooth, bucket tooth, or blade makes installation complex; and the complexity and difficulty of maintaining and replacing the tooth tip significantly reduces the operating efficiency and economic benefits of construction machinery. To solve these problems, the technical solution adopted by this invention is:

[0005] A shovel blade assembly, comprising:

[0006] The blade body has pin holes, and a preset number of pin holes are arranged sequentially along the length of the blade body.

[0007] The shovel tooth includes a tooth body, and a limit plate is provided on the upper end face of the tooth body in a fixed structure manner. Two opposing limit plates are respectively provided on both sides of the blade body.

[0008] The groove is formed on the side wall of the limiting plate;

[0009] The positioning pin includes a pin rod and a pin head connected in a fixed structure. The pin rod is inserted into the pin hole, and the pin head is engaged between two adjacent grooves.

[0010] The pin sleeve is located on the other side of the blade body away from the pin head. The pin sleeve is detachably fitted onto the pin rod and is engaged between two adjacent grooves to fix the spade teeth to the blade body.

[0011] Furthermore, the inner walls of the two limiting plates and the upper end face of the tooth body are arranged in a U-shape.

[0012] Furthermore, an insert plate is provided between the two limiting plates in a fixed structure;

[0013] The lower end face of the blade body has an embedding groove for inserting the insert plate.

[0014] Furthermore, the groove cross-section is an arc structure, and the side of the pin head fits against the inner wall of the groove;

[0015] Furthermore, the groove cross-section is designed with a multi-segment structure, and the side of the pin head fits against the inner wall of the groove.

[0016] Furthermore, a retaining ring retaining ring is provided on the outer circumferential surface of the end of the pin away from the pin head.

[0017] The beneficial effects of this invention are: the pin rod and the pin hole are inserted and matched, and the pin head and the groove are matched, so that the scraper teeth can be quickly installed on the blade body without welding work, and the scraper teeth can be replaced more quickly. Attached image description:

[0018] Figure 1 This is a three-dimensional exploded view of part of the structure in Embodiment 1 of the present invention.

[0019] Figure 2 This is a schematic diagram of the main structure of Embodiment 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of the rear view structure of Embodiment 1 of the present invention.

[0021] Figure 4 This is a schematic diagram of the main structure of Embodiment 2 of the present invention.

[0022] Figure 5 This is a rear view structural schematic diagram of Embodiment 2 of the present invention.

[0023] Figure 6 This is a schematic diagram of the main structure of Embodiment 3 of the present invention.

[0024] Figure 7 This is a rear view structural schematic diagram of Embodiment 3 of the present invention.

[0025] Figure 8 This is a schematic diagram of the main structure of Embodiment 4 of the present invention.

[0026] Figure 9 This is a rear view structural schematic diagram of Embodiment 4 of the present invention.

[0027] In the picture:

[0028] 1. Blade body, 2. Pin hole, 3. Shovel tooth, 31. Tooth body, 32. Limiting plate, 33. Insert plate, 4. Groove, 51. Pin rod, 52. Pin head, 53. Pin sleeve, 6. Embedded groove, 7. Snap ring groove, 8. Retaining ring snap ring. Detailed implementation method:

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this invention. The specific implementation scheme of this invention is as follows:

[0030] Example 1:

[0031] A shovel blade assembly includes: a blade body 1, on which pin holes 2 are formed, and a predetermined number of pin holes 2 are arranged sequentially along the length direction of the blade body 1;

[0032] The shovel tooth 3 includes a tooth body 31. A limiting plate 32 is fixedly provided on the upper end face of the tooth body 31. Two opposing limiting plates 32 are respectively provided on both sides of the blade body 1. That is, the shovel tooth 3 and the blade body 1 are detachably connected. The side wall of the limiting plate 32 is provided with a groove 4. The positioning pin includes a pin rod 51 and a pin head 52 connected in a fixed manner. The pin rod 51 is inserted into the pin hole 2, and the pin head 52 is engaged between two adjacent grooves 4.

[0033] The pin sleeve 53 is located on the other side of the blade body 1 away from the pin head 52. The pin sleeve 53 is detachably sleeved on the pin rod 51. The pin sleeve 53 is engaged between two adjacent grooves 4 to fix the shovel tooth 3 to the blade body 1.

[0034] It should be noted that, in order to satisfy the insertion and engagement relationship between the shovel tooth 3 and the blade body 1, in this embodiment, the inner walls of the two limiting plates 32 and the upper end face of the tooth body 31 are further defined as a U-shaped structure. In other embodiments, this needs to be determined according to the shape of the blade body 1.

[0035] Furthermore, an insert plate 33 is fixedly arranged between the two limiting plates 32. An embedding groove 6 for inserting the insert plate 33 is opened on the lower end face of the blade body 1. This structural design has two considerations: first, it can facilitate the fixing of the outermost shovel tooth 3 and play a limiting role; second, it increases the stability of the structure and prevents the two limiting plates 32 from tearing with the tooth body 31 during the scraping and shoveling action.

[0036] A retaining ring groove 7 is provided on the outer circumferential surface of the end of the pin 51 away from the pin head 52. A retaining ring 8 is provided in the retaining ring groove 7 to prevent the pin sleeve 53 from coming off the pin 51.

[0037] In this embodiment, the pin head 52 is a cylindrical structure, the groove 4 is set as a circular arc structure, and part of the side of the pin head 52 fits against the inner wall of the groove 4, that is, the side of the groove 4 is a partially circular arc side structure.

[0038] Example 2:

[0039] Based on Example 1, in this example, the pin head 52 is set as an elliptical structure, and the cross section of the groove 4 is adapted to fit the elliptical structure.

[0040] Example 3:

[0041] Based on Example 1, in this example, the pin head 52 is set as a hexagonal prism structure, and the groove 4 is a broken line structure formed by two line segments, which fits and conforms to part of the hexagonal surface.

[0042] Example 4:

[0043] Based on Example 1, in this example, the pin head 52 is set as a cube or cuboid structure, and the groove 4 is adapted to fit and conform to part of the surface.

[0044] It should be noted that in embodiments 1-4, the pin sleeve 53 and the pin rod 51 are interference-fitted, while in embodiment 1 they can also be connected by a threaded fit.

[0045] The working principle and process of the present invention are described below using Example 1:

[0046] First, insert the insert plate 33 of the shovel tooth 3 into the embedding groove 6, and then the two limiting plates 32 are engaged on both sides of the blade body 1. Next, insert the pin 51 into the pin hole 2 until the inner wall of the pin head 52 contacts the side wall of the blade body 1. At this time, the circumferential wall of the pin head 52 is in contact with the side wall of the groove 4. Then, insert the pin sleeve 53 onto the pin 51 until the inner wall of the pin sleeve 53 contacts the side wall of the blade body 1. Similarly, the circumferential wall of the pin sleeve 53 is in contact with the side wall of the groove 4 on the other limiting plate 32. At this time, the shovel tooth 3 is installed and fixed on the blade body 1. Finally, engage the retaining ring 8 into the retaining ring groove 7 to complete the installation.

[0047] When disassembly is required, simply remove the retaining ring 8 from the retaining ring groove 7, place one end of a cylindrical rod smaller than the diameter of the pin 51 on the end face of the pin 51, and use a hammer to strike the other end of the cylindrical rod to remove the pin 51 from the pin sleeve 53 and the pin hole 2, thereby separating the scraper tooth 3 from the blade body 1 and completing the disassembly work.

[0048] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although the invention has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments are conceived within the scope of the invention described herein.

Claims

1. A shovel blade assembly, characterized in that, include: The blade body (1) has pin holes (2) on it, and a preset number of pin holes (2) are arranged sequentially along the length direction of the blade body (1). The shovel tooth (3) includes a tooth body (31). The upper end face of the tooth body (31) is provided with a limiting plate (32) in a fixed structure manner. The two opposing limiting plates (32) are respectively provided on both sides of the blade body (1). The groove (4) is formed on the side wall of the limiting plate (32); The positioning pin includes a pin rod (51) and a pin head (52) connected in a fixed structure. The pin rod (51) is inserted into the pin hole (2), and the pin head (52) is engaged between two adjacent grooves (4). A pin sleeve (53) is located on the other side of the blade body (1) away from the pin head (52). The pin sleeve (53) is detachably mounted on the pin rod (51). The pin sleeve (53) is engaged between two adjacent grooves (4) to fix the shovel teeth (3) to the blade body (1).

2. The shovel blade assembly according to claim 1, characterized in that: The inner walls of the two limiting plates (32) and the upper end face of the tooth body (31) are arranged in a U-shaped structure.

3. The shovel blade assembly according to claim 2, characterized in that: An insert plate (33) is provided between the two limiting plates (32) in a fixed structure manner; The lower end face of the blade body (1) is provided with an embedding groove (6) for inserting the insert plate (33).

4. The shovel blade assembly according to claim 1, characterized in that: The groove (4) has a circular arc structure in cross section, and the side of the pin head (52) fits against the inner wall of the groove (4).

5. The shovel blade assembly according to claim 1, characterized in that: The groove (4) has a multi-segment structure in its cross section, and the side of the pin head (52) is in contact with the inner wall of the groove (4).

6. The shovel blade assembly according to claim 1, characterized in that: A retaining ring groove (7) is provided on the outer circumferential surface of the end of the pin (51) away from the pin head (52), and a retaining ring retaining ring (8) is provided in the retaining ring groove (7).

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