A tool for one-time forming of pipe trenches
By designing an adjustable slope trapezoidal bucket, the problem of time-consuming and labor-intensive excavation for municipal pipeline trenches has been solved, enabling rapid construction based on geological conditions and improving construction efficiency and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SECOND ENG BUREAU LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, vertical excavation during municipal pipeline trench excavation results in time-consuming and labor-intensive construction, making it impossible to complete the task quickly. Furthermore, the existing excavator buckets have a fixed shape, limiting their applicability and making it impossible to adjust them according to geological conditions.
Design a trapezoidal bucket, including an adjustable slope assembled bucket, which connects the crossarm and the right-angled trapezoidal splice excavator plate through a hinge, so as to realize the adjustable slope of both sides of the trench. Combined with the design of adjustable width patch plate and bolt holes, it can adapt to different geological conditions.
This allows for slope protection to be completed in one go during the excavation process based on geological conditions, avoiding rework and improving construction efficiency and adaptability.
Smart Images

Figure CN224281415U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of trench excavation technology, specifically to a tool for one-time forming of pipeline trenches. Background Technology
[0002] When excavating municipal pipeline trenches, because the buckets of different excavators are all rectangular in cross-section, the trenches are almost vertically excavated, requiring slope repair. This construction method is time-consuming and labor-intensive, and cannot complete the construction task quickly, resulting in the current trench excavation being almost vertical.
[0003] With the development of modern machinery processing industry, the requirements for cutting quality and precision are constantly increasing. The requirements for improving production efficiency, reducing production costs, and trench excavation are also gradually increasing. Currently, there is an invention for triangular excavator buckets, but due to their fixed shape and severely limited scope of application, they cannot be adjusted for different geological conditions. Utility Model Content
[0004] The purpose of this utility model is to provide a tool for one-time forming of pipe trenches, in order to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A tool for one-time forming of pipe trenches, which is a trapezoidal bucket connected to an excavator, is characterized in that: the trapezoidal bucket is an assembled, slope-adjustable bucket, including a crossarm and right-angled trapezoidal splicing digging plates with the same structure located on both sides of the crossarm. The right-angled trapezoidal splicing digging plates on both sides are arranged at a certain distance. The acute corners of the two right-angled trapezoidal splicing digging plates are respectively hinged to the two sides of the crossarm and connected by a width-adjustable patch plate. The width-adjustable patch plate is evenly distributed with small bolt holes for bolting to the crossarm and the right-angled trapezoidal splicing digging plates.
[0007] The right-angled trapezoidal splicing excavator includes a right-angled trapezoidal back plate, a side plate located on the oblique waist side of the right-angled trapezoidal back plate, and a short plate located on the right-angled short side of the right-angled trapezoidal back plate. The width-adjustable patch plate has an L-shaped cross section. The vertical plate of the L-shaped patch plate is attached to the right-angled trapezoidal back plate of the two right-angled trapezoidal splicing excavators and bolted together.
[0008] More preferably, the side plates, right-angled short plates, and L-shaped bottom plates are all blade plates.
[0009] Furthermore, the L-shaped base plate is also provided with bucket teeth.
[0010] Furthermore, bolt holes are provided on the crossarm, the long right-angle side of the right-angled trapezoidal back plate, and the vertical right-angled side.
[0011] Furthermore, the adjustable width patch plate has an L-shaped cross-section, formed by stacking two L-shaped steel plates with evenly distributed small bolt holes.
[0012] Furthermore, the upper surface of the adjustable width patch plate is overlapped with the back of the crossbeam and then bolted together, and the middle surface is attached to the back of the adjustable width patch plate and then bolted together.
[0013] In addition, the right-angled trapezoidal splicing excavator plate rotates along the hinge, and by adjusting the angle between the oblique waist side and the crossbeam, the slope of both sides of the trench after excavation can be adjusted.
[0014] More preferably, the crossarm should be fixed with a lug plate that is connected to the excavator.
[0015] Compared with the prior art, this utility model has the following features and beneficial effects:
[0016] This application modifies the shape of the excavator bucket to an inverted trapezoid, enabling direct excavation of trenches with slopes. Furthermore, by installing articulated components on the bucket, the angle can be manually adjusted to meet different slope coefficients. Therefore, during trench excavation, the bucket can be adjusted according to geological conditions and the designed slope coefficient, thereby achieving the goal of excavating a slope in one go and avoiding rework and waste. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a one-time forming tool for pipe trenches according to this application. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of a one-time forming tool for pipe trenches according to this application;
[0019] Figure 3 This is a cross-sectional diagram of the adjustable-width patch plate involved in this application.
[0020] Attached reference numerals: 1-crossbeam; 2-right-angled trapezoidal spliced excavation plate; 21-right-angled trapezoidal back plate; 22-side plate; 23-right-angled short plate; 3-width adjustable patch plate; 4-ear plate. Detailed Implementation
[0021] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.
[0022] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.
[0023] Example 1
[0024] A one-time forming tool for pipe trenches includes a crossbeam and angled plates hinged to both sides of the crossbeam. One side of the angled plate must have a side plate to form a lateral cutting edge. The two angled plates can be connected by a patch plate (width adjustable connecting plate). The L-shaped bottom plate and the side plate of the patch plate form an isosceles trapezoidal outline, which is the outline of the trench / groove. Perforations can be evenly spaced on the plate surfaces adjacent to the crossbeam and the patch plate to facilitate bolting to the crossbeam and the patch plate. The perforations on the crossbeam and the angled plates can be a fixed number of perforations, not evenly distributed. That is, the entire device is adjustable according to the evenly distributed small bolt holes on the patch plate. The patch plate is connected to both the angled plates and the crossbeam, which connects the left and right sides of the entire device. The connection between the angled plates and the crossbeam enhances the stability of the entire device. Based on the above, a specific embodiment 2 is derived.
[0025] Example 2
[0026] Based on Embodiment 1, a tool for one-time forming of pipe trenches, such as Figures 1-3 As shown, this is a trapezoidal bucket connected to an excavator. The trapezoidal bucket is an assembled, slope-adjustable bucket, including a crossarm 1 and right-angled trapezoidal spliced digging plates 2 with the same structure located on both sides of the crossarm 1. The right-angled trapezoidal spliced digging plates 2 on both sides are set at a certain interval. The acute corners of the two right-angled trapezoidal spliced digging plates 2 are respectively hinged to both sides of the crossarm 1. The hinge device is selected as needed and is connected through a width-adjustable patch plate 3. Small bolt holes are evenly distributed on the width-adjustable patch plate 3 for bolting to the crossarm 1 and the right-angled trapezoidal spliced digging plates 2. The right-angled long sides of the right-angled trapezoidal spliced digging plates 2 on both sides should be bolted to the crossarm.
[0027] The right-angled trapezoidal splicing excavator 2 includes a right-angled trapezoidal back plate 21, a side plate 22 located on the diagonal waist side of the right-angled trapezoidal back plate 21, and a short plate 23 located on the short right-angled side of the right-angled trapezoidal back plate 21. The width adjustable patch plate 3 has an L-shaped cross section. The vertical plate of the L-shaped patch plate is attached to the right-angled trapezoidal back plate 21 on both sides of the right-angled trapezoidal splicing excavator 2 and bolted together. The side plate 22, the right-angled short plate 23, and the L-shaped bottom plate are all cutting plates. The L-shaped bottom plate is also equipped with bucket teeth (not shown in the figure). The crossbeam 1 and the right-angled trapezoidal back plate 2 Bolt holes are provided on both the long right-angle side and the vertical right-angle side of the crossarm 1. The cross section of the adjustable width patch plate 3 is L-shaped and is formed by stacking two L-shaped steel plates with evenly distributed small bolt holes. The upper plate surface of the adjustable width patch plate 3 is stacked with the back of the crossarm 1 and then bolted. The middle plate surface is attached to the back of the adjustable width patch plate 3 and then bolted. The right-angle trapezoidal splicing excavator plate 2 rotates along the hinge. By adjusting the angle between the oblique waist side and the crossarm 1, the slope of both sides of the trench after excavation can be adjusted. The crossarm 1 should be fixed with ear plates 4 connected to the excavator.
[0028] As described in Example 1, the short plate 23 located on the short right-angle side of the right-angled trapezoidal back plate 21 can be set as needed. Under the premise that the overall tool size remains unchanged, if the short plate 23 exists, as the angle is adjusted, the short plate 23 and the above-mentioned L-shaped base plate can form a superimposed state, which can enhance the toughness and strength of the base plate. At the same time, the two L-shaped steel plates of the width-adjustable patch plate do not need to have excessive relative displacement, that is, the superimposed part is relatively wide, which can enhance the toughness and strength of the width-adjustable patch plate. If the short plate 23 does not exist, the width-adjustable patch plate needs to fill the base plate between the corners of the two angled plates at any time to form the bottom blade plate. The advantage is that the structure is relatively simple.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A tool for one-time forming of pipe trenches, comprising a trapezoidal bucket connected to an excavator, characterized in that: The trapezoidal bucket assembly type, slope adjustable bucket includes a crossarm (1) and right-angled trapezoidal splicing digging plates (2) with the same structure on both sides of the crossarm (1). The right-angled trapezoidal splicing digging plates (2) on both sides are set at a certain distance. The acute corners of the two right-angled trapezoidal splicing digging plates (2) are respectively hinged to both sides of the crossarm (1) and connected through a width adjustable patch plate (3). Small bolt holes for bolting to the crossarm (1) and the right-angled trapezoidal splicing digging plates (2) are evenly distributed on the width adjustable patch plate (3). The right-angled trapezoidal splicing excavation plate (2) includes a right-angled trapezoidal back plate (21), a side plate (22) located on the waist side of the right-angled trapezoidal back plate (21) and a short plate (23) located on the right-angled short side of the right-angled trapezoidal back plate (21). The width adjustable patch plate (3) has an L-shaped cross section. The vertical plate of the L-shaped plate is attached to the right-angled trapezoidal back plate (21) of the two right-angled trapezoidal splicing excavation plates (2) and bolted together.
2. The pipe trench forming tool as described in claim 1, characterized in that: The side plate (22), the right-angle short plate (23), and the L-shaped bottom plate are all blade plates.
3. The pipe trench forming tool as described in claim 1, characterized in that: The L-shaped base plate is also equipped with bucket teeth.
4. The pipe trench forming tool as described in claim 1, characterized in that: Bolt holes are provided on the crossbeam (1), the long right-angle side of the right-angled trapezoidal back plate (21), and the vertical right-angled side.
5. The pipe trench forming tool as described in claim 1, characterized in that: The adjustable width patch plate (3) has an L-shaped cross section, which is formed by stacking two L-shaped steel plates with evenly distributed small bolt holes.
6. The pipe trench forming tool as described in claim 1, characterized in that: The upper plate surface of the adjustable width patch plate (3) is overlapped with the back of the crossbeam (1) and then bolted together, and the middle plate surface is attached to the back of the adjustable width patch plate (3) and then bolted together.
7. The pipe trench forming tool as described in claim 1, characterized in that: The right-angled trapezoidal splicing excavator plate (2) rotates along the hinge, and the slope of the trench on both sides can be adjusted after excavation by adjusting the angle between the oblique waist side and the crossbeam (1).
8. A pipe trench forming tool as described in any one of claims 1 to 7, characterized in that: The crossarm (1) should be fixed with a lug (4) that is connected to the excavator.