Rack of ditcher and ditcher

Abstract

The ditcher rack comprises a driving main shaft, one end of the driving main shaft is connected with an input shaft of an indexing box, the other end of the driving main shaft is a power connecting end, a shaft sleeve is arranged on the driving main shaft in a sleeved mode to form a ditcher rack body, the indexing box is fixed on the shaft sleeve, and the power connecting end is connected with the power connecting end. Compared with a traditional vertical arrangement mode of the transfer case and the gearbox, the structural design greatly reduces the size of the ditcher in the vertical direction, so that the whole ditcher is more compact in structure, the bottom dragging problem can be effectively avoided without depending on a large-diameter cutterhead, the running resistance during ditching operation is reduced, and the ditcher can adapt to various power machines such as low-horsepower tractors and the like, and is suitable for popularization and application. Due to the compact structural design, unnecessary parts are reduced, and the overall weight and manufacturing complexity of the ditcher are reduced, so that the manufacturing cost is effectively controlled, and wide popularization and application of the ditcher in agricultural production are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a trencher frame and a trencher. Background Technology

[0002] Ditching machines used in agricultural production are widely used for ditching operations in wheat or rice fields. Existing double-disc ditching machines are generally used with high-horsepower tractors (over 50 horsepower). The double-disc ditching machine is arranged at an angle to the vertical plane. The two sets of cutters are connected to the output shaft of the transfer case via drive shafts, and the output shaft of the transfer case is connected to the output shaft of the gearbox. The input shaft of the gearbox can be connected to the output shaft of the tractor via an outward shaft. When the tractor starts, the frame of the double-disc ditching machine is lowered, allowing the two sets of cutters to cut into the soil. As the tractor moves linearly, it drags the entire double-disc ditching machine linearly to achieve the ditching operation. However, the transfer case and gearbox of the aforementioned double-disc ditching machine... The gearbox is arranged vertically, resulting in a large vertical dimension for this double-disc trencher. Consequently, the diameters of the two sets of cutters are generally large to ensure reliable cutting into the soil and prevent bottoming out. Furthermore, the large cutter size and spacing between the cutters in existing double-disc trenchers result in a wide trench, leading to significant resistance during trenching and requiring high tractor horsepower. When used with tractors with lower horsepower (less than 50 hp), existing double-disc trenchers present problems, easily causing stalling or other operational issues. Additionally, their weight and manufacturing cost are also high. Utility Model Content

[0003] In view of the shortcomings of the prior art, a trencher frame and trencher are provided to solve the problem of large cutter head size caused by gearbox, thereby reducing trenching resistance, adapting to use with smaller horsepower tractors, and reducing product production cost and weight.

[0004] To achieve the above-mentioned objectives and other related objectives, this utility model proposes...

[0005] A trencher frame, comprising:

[0006] A drive spindle, one end of which is connected to the input shaft of the indexing box, and the other end of which is a power connection end;

[0007] The bushing is sleeved outside the drive spindle and forms the frame body of the trencher;

[0008] The indexing box is fixed on the bushing.

[0009] In one embodiment of this utility model, the bushing is provided with a diagonal brace extending to both sides from one end near the power connection end, and the diagonal brace extends toward the direction of the power machinery.

[0010] In one embodiment of this utility model, a tail shovel is provided on the bushing in the direction away from the power connection end, and the tail shovel is used to level the bottom of the trench of the split trench.

[0011] In one embodiment of the present invention, the indexing box is provided with an extension section, the tail shovel is disposed on the extension section, and the extension section is arranged along the length direction of the bushing.

[0012] In one embodiment of the present invention, a support bar is provided above the bushing tube, one end of the support bar is hinged to the extension section, and the support bar is located above the bushing tube with an acute angle between them.

[0013] In one embodiment of the present invention, the extended end of the diagonal brace is hinged to a second connecting frame, and the second connecting frame extends upward to connect with the transition connecting frame body.

[0014] In one embodiment of this utility model, a horizontal adjusting wire is hinged to the transition connecting frame, and the other end of the horizontal adjusting wire is hinged to the tail end of the power machinery. A first connecting frame is hinged to the extension end of the inclined support frame. The first connecting frame extends toward the power machinery, and its other end is hinged to the tail end of the power machinery. A hanging rod is hinged to the middle section of the first connecting frame. The upper end of the hanging rod is hinged to the boom at the tail end of the power machinery. An adjusting rod is hinged to the middle connecting end of the hanging rod and the first connecting frame. The adjusting rod is hinged to the tail end of the power machinery.

[0015] In one embodiment of this utility model, a depth-limiting slide is provided at the end of the bushing away from the power connection end. The depth-limiting slide is located on the bushing with adjustable height in the vertical direction and is positioned behind the tail shovel.

[0016] Another objective of this utility model is to provide a double-blade trencher, which includes the trencher frame described above.

[0017] The double-blade trencher also includes a universal joint, one end of the drive spindle is connected to the universal joint at one end of the universal joint, and the universal joint at the other end of the universal joint is connected to the power output shaft at the tail end of the power machinery.

[0018] The indexing box is equipped with two cutter head shafts, and the two cutter head shafts extend downward at an angle, with cutter heads fixed at their extended ends.

[0019] Another objective of this utility model is to provide a single-blade disc trencher, which includes the trencher frame described above.

[0020] The single-blade trencher also includes a universal joint, one end of the drive spindle is connected to the universal joint at one end of the universal joint, and the universal joint at the other end of the universal joint is connected to the power output shaft at the tail end of the power machinery.

[0021] The indexing box is equipped with a cutter head shaft, which extends horizontally and has a single cutter head fixed at each end of the extension.

[0022] By adopting the above technical solution, the technical effects of this utility model are as follows: the trencher frame connects one end of the drive spindle to the input shaft of the indexing box, and the other end serves as the power connection end. The bushing is fitted onto the drive spindle to form the frame body, and the indexing box is fixed to the bushing. This structural design brings several significant technical benefits: First, the integrated layout of the drive spindle, bushing, and indexing box, compared to the traditional vertical arrangement of the transfer case and gearbox, significantly reduces the vertical dimensions of the trencher, making the overall structure more compact and effectively avoiding bottoming out without relying on a large-diameter cutter head; Second, the bushing, as an integrated design of the frame body and the indexing box, optimizes the power transmission path, reduces the running resistance during trenching operations, and can be adapted to various power machinery such as low-horsepower tractors, greatly expanding the applicability of the equipment and reducing malfunctions such as tractor stalling due to insufficient power; Third, the compact structural design reduces unnecessary parts, lowers the overall weight and manufacturing complexity of the trencher, thereby effectively controlling manufacturing costs and facilitating the widespread application of the equipment in agricultural production. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 and Figure 2 These are schematic diagrams of the double-blade trencher from two different perspectives in one embodiment of this utility model;

[0025] Figure 3 This is a front view of a double-blade trencher according to one embodiment of the present invention;

[0026] Figure 4 This is a front view of the connection between the double-disc trencher and the tractor in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the double-disc trencher after the retaining plate is removed in one embodiment of the present invention;

[0028] Figure 6 and Figure 7 These are schematic diagrams from two different perspectives of the installation of the drive spindle, indexing box, and bushing sleeve in one embodiment of this utility model.

[0029] Figure 8 This is a schematic diagram of the bushing structure in one embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure for mounting the drive spindle, indexing box, bushing and cutter head in one embodiment of the present invention;

[0031] Figure 10 for Figure 9 The left view;

[0032] Figure 11 This is a cross-sectional view of the drive spindle, indexing box and bushing in one embodiment of the present invention.

[0033] Figure 12 This is a schematic diagram of the indexing box in one embodiment of the present invention;

[0034] Figure 13 This is a left view of a single-blade trencher according to another embodiment of the present invention;

[0035] Figure 14 This is a cross-sectional view of the drive spindle, indexing box, and bushing of a single-blade trencher in another embodiment of the present invention. Detailed Implementation

[0036] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0037] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] Existing dual-disc trenchers are generally used with high-horsepower tractors (over 50 horsepower). The dual-disc trencher is arranged at an angle to the vertical plane. The two sets of cutters are connected to the output shaft of the transfer case via drive shafts, and the output shaft of the transfer case is connected to the output shaft of the gearbox. The input shaft of the gearbox can be connected to the output shaft of the tractor via an outward shaft. When the tractor starts, the frame of the dual-disc trencher is lowered, allowing the two sets of cutters to cut into the soil. As the tractor moves linearly, it drags the entire dual-disc trencher linearly to achieve the trenching operation. However, the transfer case and gearbox of the aforementioned dual-disc trencher are arranged vertically, resulting in a relatively large vertical dimension. Therefore, the diameters of the two sets of cutters are generally large to ensure that they can reliably cut into the soil and avoid bottoming out. Furthermore, due to the large cutter head size of existing double-cutterhead trenchers, the actual trenching resistance is high, requiring a high horsepower from the tractor. When used with tractors with lower horsepower, existing double-cutterhead trenchers have operational problems, easily causing the tractor to stall or other operational issues. Additionally, existing double-cutterhead trenchers are heavy and have high manufacturing costs. To address this, a trencher frame is proposed, comprising: a drive spindle 10, one end of which is connected to the input shaft of an indexing box 70, and the other end of which is a power connection end; a bushing 20, sleeved on the drive spindle 10 and forming the trencher frame body, with a transition frame on the bushing 20 forming a connection frame with the power machinery; and the indexing box 70 fixed on the bushing 20.

[0039] See Figures 1 to 3 In the above embodiments, the integrated layout of the drive spindle 10, bushing 20, and indexing box 70 significantly reduces the vertical dimensions of the trencher compared to the traditional vertical arrangement of the transfer case and gearbox. This results in a more compact overall structure and effectively avoids bottoming out issues without relying on a large-diameter cutter head. The bushing 20, as an integrated design of the frame body and indexing box 70, optimizes the power transmission path, reduces running resistance during trenching operations, and is compatible with various power machinery such as low-horsepower tractors, greatly expanding the applicability of the equipment and reducing malfunctions such as tractor stalling due to insufficient power. The compact structural design reduces unnecessary parts, lowers the overall weight and manufacturing complexity of the trencher, thereby effectively controlling manufacturing costs and facilitating its widespread application in agricultural production.

[0040] In one embodiment, see Figure 4 The bushing 20 is provided with a tail shovel 30 at the end away from the power connection end, and the tail shovel 30 is used to level the bottom of the trench.

[0041] In the above embodiments, the depth of the tail shovel 30 should be flush with the bottom of the cutter head. When the cutter head rotates to open a ditch, the tail shovel 30 can promptly level the bottom of the ditch after opening, effectively eliminating the unevenness caused by the cutter head cutting, ensuring the flatness of the ditch bottom, providing a good foundation for subsequent agricultural operations such as sowing and irrigation, and significantly improving the quality of ditching operations. This design integrates the leveling process with the ditching process, eliminating the need for additional equipment or manpower to level the bottom of the ditch, reducing subsequent processes in agricultural production, and lowering labor and material costs. The simultaneous ditching and leveling avoids repeated disturbance to the soil during secondary operations, shortens the overall operation time, greatly improves the efficiency of agricultural ditching operations, and further enhances the practicality and functionality of the ditching machine in agricultural production.

[0042] In one embodiment, the indexing box 70 is provided with an extension section 73, the tail shovel 30 is provided on the extension section 73, and the extension section 73 is arranged along the length direction of the bushing 20.

[0043] In the above embodiments, the extension section 73 can be either a square tube or a round tube. One end of the extension section 73 can be connected to the indexing box 70 via a flange, or it can be fixed to the indexing box 70 by welding.

[0044] In one embodiment, see Figure 4 The bushing 20 is further provided with a depth limiting slide 40 at the end away from the power connection end. The depth limiting slide 40 is located on the bushing 20 and its height is adjustable in the vertical direction. The depth limiting slide 40 is located at the rear of the tail shovel 30.

[0045] In one embodiment, a vertical tube is provided at the tail end of the extension section 73, and a vertical adjustment rod is provided on the depth-limiting slide 40. The vertical adjustment rod passes through the vertical tube, and multiple sets of connecting holes are opened on the vertical adjustment rod. After the vertical adjustment rod passes through the vertical tube, the vertical adjustment rod is fixed to the vertical tube by fastening bolts, and the height of the depth-limiting slide 40 can be adjusted.

[0046] In another embodiment, an adjusting nut is provided at the tail end of the extension section 73, and an adjusting screw is provided inside the adjusting nut. The adjusting screw enables stepless adjustment of the depth limit slide 40.

[0047] In the above embodiments, see Figure 4The depth-limiting slide bar 40's height can be flexibly adjusted vertically, precisely controlling the trenching depth to meet the diverse needs of different crops. This avoids the impact of excessively deep or shallow trenches on subsequent planting results, significantly improving the accuracy of trenching operations. The layout, located behind the tail shovel 30, allows for real-time depth detection and fine-tuning of the trenches during the trencher's movement. Combined with the tail shovel's leveling operation of the trench bottom, this ensures consistent trench depth and a flat bottom, effectively improving the quality of trenching operations. The support force generated by the depth-limiting slide bar 40 in contact with the ground or trench bottom balances the soil resistance encountered by the trencher during operation, reducing swaying and bumping during movement, improving equipment stability, reducing wear on components due to vibration, and extending the trencher's service life.

[0048] In one embodiment, see Figures 5 to 7 To achieve the connection between the bushing 20 and the tail end of the power machinery, the bushing 20 is provided with a diagonal brace 21 extending to both sides from the end near the power machinery. The diagonal brace 21 extends toward the power machinery, and the transition frame is connected to the diagonal brace 21.

[0049] In the above embodiment, the power machinery is a four-wheel tractor. The setting of the diagonal support frame 21 greatly enhances the overall structural strength of the frame. Its triangular support structure effectively disperses the force transmitted from the power machinery to the trencher, reduces the stress concentration borne by the bushing during operation, reduces the risk of frame deformation, and ensures the stability of the trencher under long-term high-intensity operation.

[0050] In one embodiment, see Figures 1 to 4 A support bar 50 is provided above the bushing 20. One end of the support bar 50 is hinged to the end of the bushing 20 away from the power connection end, and the other end of the support bar 50 is hinged to the transition frame. The support bar 50 and the bushing 20 are arranged at an acute angle.

[0051] In the above embodiments, the support bar 50, bushing 20, and transition frame form a stable mechanical structure, which greatly enhances the overall structural strength of the trencher frame, effectively resists the reaction force and mechanical vibration from the soil during trenching operations, reduces the risk of frame deformation, and extends the service life of the equipment. The acute-angled support bar 50 can effectively disperse the vertical pressure and horizontal tension generated during trenching operations, optimize the stress distribution of the frame, avoid local stress concentration, and enable the power transmitted by the power machinery to act more evenly and stably on each component of the trencher, thereby improving the power transmission efficiency.

[0052] In one specific embodiment, see Figures 5 to 7The transition frame includes a first connecting frame 22 that is hinged to the extended end of the diagonal brace 21. The first connecting frame 22 extends toward the power machinery and its other end is hinged to the tail end of the power machinery. A hanger 23 is hinged to the middle section of the first connecting frame 22, and the upper end of the hanger 23 is hinged to the boom at the tail end of the power machinery.

[0053] In one embodiment, the power machinery consisting of the four-wheel tractor is equipped with a hydraulic boom at its rear end. By activating the hydraulic boom, the boom 23 can be raised and lowered, thereby lifting or lowering the first connecting frame 22 to cooperate with other frames and lift or lower the entire trencher frame.

[0054] In one embodiment, see Figure 5 The extended end of the diagonal brace 21 is also hinged to a second connecting frame 24. The second connecting frame 24 extends upward and connects to the transition connecting frame 25. The other end of the support bar 50 is hinged to the transition connecting frame 25. A horizontal adjusting wire 26 is hinged on the transition connecting frame 25. The other end of the horizontal adjusting wire 26 is hinged to the tail end of the power machinery.

[0055] In one embodiment, an adjusting rod 221 is hinged to the middle connecting end of the boom 23 and the first connecting frame 22, and the adjusting rod 221 is hinged to the tail end of the power machinery.

[0056] In the above embodiments, the diagonal brace 21 is hinged to the tail end of the power machinery via the first connecting frame 22 and connected to the boom of the power machinery via the middle section of the boom 23, forming a stable support system. This not only enhances the stability of the connection between the trencher and the power machinery, but also effectively disperses the tension and torque generated during operation, preventing damage to the connection due to excessive force, and ensuring that the trencher will not shake or disengage during operation. The second connecting frame 24, the transition connecting frame 25, and the horizontal adjusting screw 26 are hinged in sequence and connected to the diagonal brace 21, the support bar 50, and the tail end of the power machinery, respectively. This further strengthens the rigidity of the overall frame structure, optimizes the force transmission path between the power machinery and the trencher, makes power transmission smoother and more efficient, reduces energy loss, and improves trenching efficiency. By adjusting the length of the adjusting rod 221, the left and right angles of the entire trencher frame and the tail of the four-wheel tractor can be adjusted. Furthermore, by adjusting the length of the horizontal adjusting screw 26, the horizontal plane of the trencher frame's bushing 20 and the diagonal brace 21 can be adjusted.

[0057] In one embodiment, threaded rods are provided at both ends of the boom 23, which can make the length of the boom 23 adjustable, and the two ends of the boom 23 can be hinged to the middle section of the first connecting frame 22 and the boom at the tail end of the tractor.

[0058] In one embodiment, multiple pin holes are provided at the connection end of the support bar 50 and the transition connection frame 25. The support bar 50 and the transition connection frame 25 can be hinged together by the pins. By adjusting the position, the connection point between the support bar 50 and the transition connection frame 25 can be adjusted, thereby adjusting the connection level of the entire tail cutter head.

[0059] In one embodiment, threaded rods are provided at both ends of the horizontal adjusting wire 26, which enables the length of the horizontal adjusting wire 26 to be adjustable. By adjusting the length of the horizontal adjusting wire 26, the height of the trenching machine frame in the vertical plane can be adjusted.

[0060] In one embodiment, the length of the adjusting rod 221 is also adjustable. The rod end of the adjusting rod 221 is connected to the attachment point at the rear of the tractor by a pin. The length adjustment method of the adjusting rod 221 can refer to the design of the boom 23.

[0061] It should be noted that the first connecting frame 22, the suspension rod 23, the leveling screw 26, and the adjusting rod 221 mentioned above are all part of the power machinery, that is, the frame that comes with the tractor itself. Figure 1 , Figure 2 and Figure 5 The dotted line portion in the figure is connected to the trenching machine frame composed of bushing 20, second connecting frame 24, transition connecting frame 25, support bar 50, and diagonal brace 21 mentioned in this utility model. The main components of the trenching machine frame are bushing 20 and diagonal brace 21, while the second connecting frame 24, transition connecting frame 25, and support bar 50 are secondary connecting frames.

[0062] This utility model also proposes a double-blade disc trencher, see reference. Figure 4 The double-blade trencher includes the trencher frame described above; the double-blade trencher also includes a universal joint 60, one end of the drive spindle 10 is connected to a universal joint at one end of the universal joint 60, and the universal joint at the other end of the universal joint 60 is connected to the power output shaft at the tail end of the power machinery; the indexing box 70 is provided with two cutter head shafts 71, and the two cutter head shafts 71 extend downwards at an inclined angle, with cutter heads 72 fixed at their extended ends.

[0063] In one embodiment, the cutter discs 72 of the above-mentioned double-disc trencher are placed on two cutter disc shafts 71 on both sides of the indexing box 70. The included angle between the two sets of cutter discs 72 is an acute angle. When trenching is carried out, the two sets of cutter discs 72 rotate at high speed, which can trench the land in real time. With the tail shovel 30 at the tail end, the soil and debris in the trench between the two sets of cutter discs 72 can be shoveled out, thereby ensuring the cleanliness of the inside of the trench.

[0064] In the above embodiment, the output shaft at the tail end of the tractor rotates, which drives the main shaft 10 to rotate via the universal joint 60, thereby enabling the rotation of the two sets of cutterheads 72 to achieve trenching operations.

[0065] In one embodiment, see Figure 11 and Figure 12 The indexing box 70 has inclined surfaces 701 on both sides, and mounting holes are respectively opened on the inclined surfaces 701 on both sides. The center of the mounting holes is staggered along the length direction of the bushing 20. A first bevel gear 711 is integrally provided at one end of the cutter head shaft 71. Support bearings are respectively sleeved on the cutter head shaft 71. A first bearing seat 712 is provided outside the support bearing. The first bearing seat 712 is connected to the mounting hole on the inclined surface 701 at the edge of the mounting hole by bolts.

[0066] In one embodiment, see Figure 11 The drive spindle 10 has a two-section structure, including a splined shaft 11 located inside the indexing box 70. A second bevel gear 101 and a third bevel gear 102 are respectively installed at both ends of the splined shaft 11. A second bearing seat 103 is installed on the end face of the indexing box 70, and a first tapered bearing is installed inside the second bearing seat 103. The rod end of the splined shaft 11 extending into the indexing box 70 engages with the first tapered bearing. A second tapered bearing is installed at the connection end of the bushing 20 and the indexing box 70, and the end face of the bushing 20 forms a third bearing seat. The inner ring of the second conical bearing is fitted onto the second bevel gear 101 of the spline shaft 11, and the outer ring of the second conical bearing is fixed on the bearing platform of the bushing 20. The end of the spline shaft 11 is inserted into the bushing 20 and fixed to the indexing box 70 through the third bearing seat on the end face of the bushing 20. The first bevel gear 711 of the two sets of cutter head shafts 71 meshes with the second bevel gear 101 and the third bevel gear 102 respectively, thereby realizing the rotation of the two sets of cutter head shafts 71. Therefore, the two sets of cutter head shafts 71 are staggered along the length direction of the bushing 20.

[0067] In one embodiment, see Figure 11 A support bearing is fitted on the other end of the drive spindle 10 extending out of the bushing 20, and a fourth bearing seat is provided at the end of the bushing 20 near the power equipment. The other section of the drive spindle 10 is inserted into the drive spindle 10 located in the indexing box 70, thereby realizing the connection of the two sets of drive spindles 10.

[0068] In one embodiment, a soil retaining plate 80 is provided on the bushing 20, and a soil retaining elastic plate extends from the soil retaining plate 80. The soil retaining plate 80 covers the cutter head 72, and when the cutter head 72 rotates, it can prevent the soil and debris from being thrown up too high.

[0069] In one embodiment, see Figure 9The cutter head 72 is provided with multiple sets of trenching cutters in the circumferential direction. The multiple sets of trenching cutters are distributed at equal angles on the cutter head 72. In a specific embodiment, the multiple sets of trenching cutters include two sets of straight cutters and four sets of curved cutters. The two sets of straight cutters are used to realize the trench cutting operation, and the four sets of curved cutters realize the breaking up of the soil in the trench and throwing it out of the trench.

[0070] This utility model also proposes a single-blade disc trencher, see reference. Figure 13 and Figure 14 Similarly, the single-blade trencher includes the trencher frame described above; the single-blade trencher also includes a universal joint 60, one end of the drive spindle 10 is connected to the universal joint of one end of the universal joint 60, and the universal joint of the other end of the universal joint 60 is connected to the power output shaft at the tail end of the power machinery; a cutter head shaft 71 is provided on the indexing box 70, the cutter head shaft 71 extends horizontally and a single cutter head 74 is fixed at each of the extended ends.

[0071] In one embodiment, the side of the indexing box 70 used to mount the cutter head shaft 71 can be either an inclined surface or a vertical surface, and the cutter head shaft 71 is also fixed to the indexing box 70 by bearings and bearing seats.

[0072] The above description is only a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0073] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. A trenching machine frame, characterized in that, include: A drive spindle (10) is provided, one end of which is connected to the input shaft of the indexing box (70), and the other end of which is a power connection end. The bushing (20) is sleeved outside the drive spindle (10) and constitutes the frame body of the trencher; The indexing box (70) is fixed on the bushing (20).

2. The trencher frame according to claim 1, characterized in that: The bushing (20) has a diagonal brace (21) extending to both sides from one end near the power connection end, and the diagonal brace (21) extends toward the power machinery.

3. The trencher frame according to claim 1, characterized in that: The bushing (20) is provided with a tail shovel (30) in the direction away from the power connection end, and the tail shovel (30) is used to flatten the bottom of the trench.

4. The trencher frame according to claim 3, characterized in that: An extension section (73) is provided on the indexing box (70), and the tail shovel (30) is provided on the extension section (73). The extension section (73) is arranged along the length direction of the bushing (20).

5. The trencher frame according to claim 4, characterized in that: A support bar (50) is provided above the bushing (20). One end of the support bar (50) is hinged to the extension section (73). The support bar (50) is located above the bushing (20) and the angle between the two is acute.

6. The trencher frame according to claim 2, characterized in that: The extension end of the diagonal brace (21) is hinged to a second connecting frame (24), which extends upward and connects to the transition connecting frame (25).

7. The trencher frame according to claim 6, characterized in that: A horizontal adjustment wire (26) is hinged on the transition connecting frame (25). The other end of the horizontal adjustment wire (26) is hinged to the tail end of the power machinery. A first connecting frame (22) is hinged to the extension end of the inclined support frame (21). The first connecting frame (22) extends toward the power machinery and the other end is hinged to the tail end of the power machinery. A hanging rod (23) is hinged to the middle section of the first connecting frame (22). The upper end of the hanging rod (23) is hinged to the boom at the tail end of the power machinery. An adjusting rod (221) is hinged to the middle connecting end of the hanging rod (23) and the first connecting frame (22). The adjusting rod (221) is hinged to the tail end of the power machinery.

8. The trencher frame according to claim 3, characterized in that: The bushing (20) is further provided with a depth limit slide (40) at the end away from the power connection end. The depth limit slide (40) is located on the bushing (20) with adjustable height in the vertical direction. The depth limit slide (40) is located behind the tail shovel (30).

9. A double-disc trencher, characterized in that: The dual-disc trencher includes the trencher frame as described in any one of claims 1 to 8; The double-blade trencher also includes a universal bar (60), one end of the drive spindle (10) is connected to the universal bar (60) at one end, and the universal bar (60) at the other end is connected to the power output shaft at the tail end of the power machinery. The indexing box (70) is provided with two cutter head shafts (71), and the two cutter head shafts (71) extend downward at an incline and each of the extended ends is fixed with a cutter head (72).

10. A single-disc trencher, characterized in that: The single-disc trencher includes the trencher frame as described in any one of claims 1 to 8; The single-blade trencher also includes a universal bar (60), one end of the drive spindle (10) is connected to the universal bar (60) at one end, and the universal bar (60) at the other end is connected to the power output shaft at the tail end of the power machinery. The indexing box (70) is provided with a cutter head shaft (71), which extends horizontally and has a single cutter head (74) fixed at each end.

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