A front and back split type rack

Abstract

The application discloses a front-rear split type rack, relates to the field of heading machines, and comprises a front rack and a rear rack, and connecting assemblies are arranged on the front rack and the rear rack; the connecting assemblies comprise two back-shaped connecting plates which are fixedly connected to one end of the front rack and the rear rack respectively; the back-shaped connecting plates, connecting holes and fixing bolts are cooperatively arranged; during use, the two back-shaped connecting plates are aligned through a positioning assembly, the connecting holes on the back-shaped connecting plates are aligned with each other, then the fixing bolts are respectively penetrated through the connecting holes, the fixing bolts are threadedly connected with nuts, the two back-shaped connecting plates are connected with each other, the front rack is fixedly connected with the rear rack, and the front rack and the rear rack form a whole; when being transported or hoisted, the fixing bolts are disassembled, and the front rack and the rear rack can be separated, the overall weight and size are reduced, and the problem that the heavy weight and large size of the rack result in inconvenient transportation and hoisting is avoided.

Description

Technical Field

[0001] This application relates to the field of tunneling machines, and more particularly to a front and rear split frame. Background Technology

[0002] A tunnel boring machine (TBM) is a machine used to excavate tunnels beneath flat ground. There are many types of TBMs: classified by the object of operation as conventional machines and tunnel boring machines (TBMs); and by operating method as open-face TBMs and shield TBMs. They mainly consist of a traveling mechanism, a working mechanism, a transport mechanism, and a transfer mechanism. As the traveling mechanism advances, the cutting head in the working mechanism continuously breaks up the rock and removes the debris. TBMs offer advantages such as safety, high efficiency, and good tunnel quality, but they are expensive, complex in construction, and experience significant wear and tear.

[0003] The existing tunneling machine frame is designed as an independent unit with the rear support legs arranged longitudinally or laterally. This connection method results in a heavy frame with a large size, which causes inconvenience in transportation and hoisting. Utility Model Content

[0004] To address the aforementioned issues, this application provides a front and rear split rack.

[0005] The front and rear split frame provided in this application adopts the following technical solution:

[0006] A front-rear split frame includes a front frame and a rear frame. The front frame and the rear frame are provided with a connecting assembly. The connecting assembly includes two U-shaped connecting plates that are respectively fixedly connected to one end of the front frame and the rear frame. The two U-shaped connecting plates have multiple equidistant connecting holes on all four sides of their opposite sidewalls. The rear frame is provided with multiple fixing bolts for connecting the two U-shaped connecting plates. The U-shaped connecting plates are provided with positioning components for aligning the connecting holes.

[0007] By adopting the above technical solution, during use, the two U-shaped connecting plates are aligned by the positioning component, so that the connecting holes on the U-shaped connecting plates are aligned with each other. Then, by passing the fixing bolts through the connecting holes respectively, and connecting the nuts with the fixing bolts by threads, the two U-shaped connecting plates are connected to each other, so that the front frame and the rear frame are fixedly connected to form a whole. During transportation or hoisting, the fixing bolts can be removed to separate the front frame and the rear frame, reducing the overall weight and size, and avoiding the problem of inconvenience in transportation and hoisting caused by heavy frame weight and large size.

[0008] Preferably, the positioning component includes positioning holes formed on the opposite sidewalls of the two U-shaped connecting plates, and a positioning pin is provided between the two U-shaped connecting plates, with both ends of the positioning pin located in the positioning holes.

[0009] By adopting the above technical solution, when connecting and fixing the two loop-shaped connecting plates, the positioning pin is first installed into the positioning hole of one of the loop-shaped connecting plates, and then the other loop-shaped connecting plate is brought close together so that the other end of the positioning pin is located in the positioning hole. The two loop-shaped connecting plates are positioned and pre-connected at the same time, which makes it convenient to pass the fixing bolt through the connection hole of the two loop-shaped connecting plates.

[0010] Preferably, the rear frame has two hinged height-adjusting cylinders on both sides at the end away from the U-shaped connecting plate, which are used to tilt the machine body left and right and withstand heavy loads. A support plate is provided below the height-adjusting cylinders on the rear frame. The support plate is horizontally placed, and pressure plates are fixedly connected to both ends of the upper surface of the support plate. Friction plates are fixedly connected to one side of the upper surface of the support plate on the pressure plates. A sliding shoe is hinged to the end of the height-adjusting cylinder away from the rear frame. The sliding shoe is located between the pressure plate and the friction plate and forms a sliding connection. Two support legs are hinged to the bottom of the rear frame. The ends of the support legs away from the rear frame are respectively hinged to the sliding shoes.

[0011] By adopting the above technical solution, when the frame is installed on the tunneling machine, the support plate can be raised or lowered by adjusting the stroke of the hydraulic cylinder. By adjusting the different strokes of the left and right hydraulic cylinders, the support plate can be tilted left and right to adapt to different bottom plate terrains, reducing the degree of damage caused by the support legs to the bottom plate of the tunneling machine.

[0012] Preferably, a skew adjustment cylinder for moving the machine left and right is hinged to the bottom of the rear frame away from the U-shaped connecting plate, and a hinge seat is fixedly connected to one side of the upper surface of the support plate, and the end of the skew adjustment cylinder away from the rear frame is hinged to the hinge seat.

[0013] By adopting the above technical solution, the support plate can be moved left and right by adjusting the stroke of the adjustment cylinder, and the tunneling machine can be corrected when it deviates from the center line of the roadway.

[0014] Preferably, the lower surface of the support plate is fixedly connected with multiple anti-slip pins.

[0015] By adopting the above technical solution, the anti-slip pins can increase the friction of the support plate and prevent it from slipping.

[0016] Preferably, a plurality of triangular reinforcing blocks are fixedly connected to one side wall of the two U-shaped connecting plates facing away from each other, and the triangular reinforcing blocks are fixedly connected to the front frame and the rear frame respectively.

[0017] By adopting the above technical solution, the strength of the U-shaped connecting plate can be improved by using triangular reinforcing blocks, thus preventing deformation of the U-shaped connecting plate.

[0018] Preferably, a plurality of concave anti-loosening blocks (18) are fixedly connected to the two U-shaped connecting plates (3), and strain sensors (19) are installed on the anti-loosening blocks (18).

[0019] By adopting the above technical solution, after connecting the two loop-shaped connecting plates, the anti-loosening block is fixed to the two loop-shaped connecting plates by external screws, which improves the stability of the connection of the loop-shaped connecting plates. At the same time, through the strain sensor, when the pressure decreases when the loop-shaped connecting plate becomes loose, the strain sensor transmits the signal to the external host to realize the loosening alarm.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. This application utilizes the interlocking structure of the U-shaped connecting plate, connecting holes, and fixing bolts. During use, the two U-shaped connecting plates are aligned using the positioning component, ensuring that the connecting holes on the U-shaped connecting plates are aligned with each other. Then, the fixing bolts are passed through the connecting holes, and the nuts are threaded onto the fixing bolts to connect the two U-shaped connecting plates, thus fixing the front frame and the rear frame together to form a whole. During transportation or hoisting, the fixing bolts can be removed to separate the front frame and the rear frame, reducing the overall weight and size. This minimizes the problems caused by heavy and large frame weight, which would otherwise make transportation and hoisting inconvenient.

[0022] 2. After connecting the two U-shaped connecting plates, the anti-loosening block is fixed to the two U-shaped connecting plates with external screws to improve the stability of the U-shaped connecting plate connection. At the same time, through the strain sensor, when the pressure decreases when the U-shaped connecting plate becomes loose, the strain sensor transmits the signal to the external host to realize the loosening alarm. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a front and rear split frame according to an embodiment of this application;

[0024] Figure 2 This is an exploded view of the connection structure between the front frame and the rear frame, which is the main embodiment of this application.

[0025] Figure 3 This is a schematic diagram illustrating the bottom structure of the support plate, which is the main feature of this application embodiment.

[0026] Figure 4 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region A in the middle.

[0027] Reference numerals: 1. Front frame; 2. Rear frame; 3. U-shaped connecting plate; 4. Connecting hole; 5. Fixing bolt; 6. Positioning hole; 7. Positioning pin; 8. Height adjustment cylinder; 9. Support plate; 10. Pressure plate; 11. Friction plate; 12. Slipper; 13. Deviation adjustment cylinder; 14. Hinge seat; 15. Support leg; 16. Anti-slip pin; 17. Triangular reinforcing block; 18. Anti-loosening block; 19. Strain sensor. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0029] This application discloses a front and rear split rack.

[0030] Reference Figure 1 , Figure 2 and Figure 3 A front and rear split frame includes a front frame 1 and a rear frame 2. The front frame 1 and the rear frame 2 are provided with a connecting assembly, which includes a U-shaped connecting plate 3, a connecting hole 4 and a fixing bolt 5.

[0031] Two U-shaped connecting plates 3 are provided, which are fixedly connected to one end of the front frame 1 and the rear frame 2 respectively. Multiple connecting holes 4 are provided, which are respectively opened on one side wall of the two U-shaped connecting plates 3. Multiple fixing bolts 5 are provided, which are respectively located on the rear frame 2. The screw ends of the fixing bolts 5 all pass through the connecting holes 4 and are connected to the two U-shaped connecting plates 3 by nuts. The U-shaped connecting plates 3 are provided with positioning components for aligning the connecting holes 4 with each other.

[0032] Reference Figure 1 and Figure 2 The positioning component includes positioning holes 6 on opposite sidewalls of two loop-shaped connecting plates 3, and positioning pins 7 between the two loop-shaped connecting plates 3. The two ends of the positioning pins 7 are respectively located in the positioning holes 6. When connecting and fixing the two loop-shaped connecting plates 3, the positioning pins 7 are first installed into the positioning holes 6 on one of the loop-shaped connecting plates 3, and then the other loop-shaped connecting plate 3 is brought close so that the other end of the positioning pins 7 is located in the positioning holes 6. The two loop-shaped connecting plates 3 are positioned and pre-connected at the same time, so that the fixing bolts 5 can be passed through the connecting holes 4 on the two loop-shaped connecting plates 3.

[0033] Reference Figure 1 , Figure 2 and Figure 3The rear frame 2, away from the U-shaped connecting plate 3, has two hinged height adjustment cylinders 8 on both sides for tilting the machine body left and right and bearing heavy loads. A support plate 9 is set below the height adjustment cylinders 8 on the rear frame 2. The support plate 9 is horizontally placed, and pressure plates 10 are fixedly connected to both ends of the upper surface of the support plate 9. Friction plates 11 are fixedly connected to one side of the upper surface of the support plate 9 on the pressure plates 10. A sliding shoe 12 is hinged to the end of the height adjustment cylinder 8 away from the rear frame 2. The sliding shoe 12 is located between the pressure plates 10 and the friction plates 11 and forms a sliding arrangement. Two support legs 15 are hinged to the bottom of the rear frame 2. The ends of the support legs 15 away from the rear frame 2 are respectively hinged to the sliding shoes 12. When the frame is installed on the tunneling machine for operation, the support plate 9 can be raised or lowered by changing the stroke of the height adjustment cylinder 8. By adjusting the different strokes of the left and right height adjustment cylinders 8, the support plate 9 can be tilted left and right to adapt to different bottom plate terrains and reduce the degree of damage caused by the support legs 15 to the bottom plate of the tunneling machine.

[0034] Reference Figure 1 , Figure 2 and Figure 3 At the bottom of the rear frame 2 away from the U-shaped connecting plate 3, there is a hydraulic cylinder 13 for moving the machine left and right. A hinge seat 14 is fixedly connected to one side of the upper surface of the support plate 9. The end of the hydraulic cylinder 13 away from the rear frame 2 is hinged to the hinge seat 14. By adjusting the stroke of the hydraulic cylinder 13, the support plate 9 can be moved left and right to correct the deviation of the tunneling machine when it deviates from the center line of the roadway.

[0035] Reference Figure 1 , Figure 2 and Figure 3 Multiple anti-slip pins 16 are fixedly connected to the lower surface of the support plate 9. The anti-slip pins 16 can increase the friction of the support plate 9 and prevent the support plate 9 from slipping.

[0036] Reference Figure 1 Multiple triangular reinforcing blocks 17 are fixedly connected to the side walls of the two U-shaped connecting plates 3 facing away from each other. The triangular reinforcing blocks 17 are fixedly connected to the front frame 1 and the rear frame 2 respectively. The strength of the U-shaped connecting plates 3 can be improved by the triangular reinforcing blocks 17, and deformation of the U-shaped connecting plates 3 can be prevented.

[0037] Reference Figure 4 Multiple concave anti-loosening blocks 18 are fixedly connected to the two loop-shaped connecting plates 3. Strain sensors 19 are installed on the anti-loosening blocks 18. After the two loop-shaped connecting plates 3 are connected, the anti-loosening blocks 18 are fixed to the two loop-shaped connecting plates 3 by external screws to improve the stability of the connection of the loop-shaped connecting plates 3. At the same time, through the strain sensor 19, when the loop-shaped connecting plate 3 becomes loose, the pressure decreases and the strain sensor 19 transmits the signal to the external host to realize the loosening alarm.

[0038] The implementation principle of the front and rear split frame in this application embodiment is as follows: In use, firstly, the positioning pin 7 is installed into the positioning hole 6 on one of the loop-shaped connecting plates 3, and then the other loop-shaped connecting plate 3 is brought close together so that the other end of the positioning pin 7 is located in the positioning hole 6. The two loop-shaped connecting plates 3 are positioned and pre-connected at the same time, so that the connecting holes 4 on the loop-shaped connecting plates 3 are aligned with each other. Then, by passing the fixing bolts 5 through the connecting holes 4 respectively, and connecting the nuts with the fixing bolts 5 by thread, the two loop-shaped connecting plates 3 are connected to each other, so that the front frame 1 and the rear frame 2 are fixedly connected to form a whole. During transportation or hoisting, the fixing bolts 5 can be removed to separate the front frame 1 and the rear frame 2, reducing the overall weight and size, and avoiding the problem of inconvenience in transportation and hoisting caused by heavy frame weight and large size.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A front-rear split frame, comprising a front frame (1) and a rear frame (2), wherein the front frame (1) and the rear frame (2) are provided with connecting components, characterized in that: The connecting assembly includes two U-shaped connecting plates (3) that are respectively fixedly connected to one end of the front frame (1) and the rear frame (2). The two U-shaped connecting plates (3) have multiple equally spaced connecting holes (4) on all four sides of their opposite sidewalls. The rear frame (2) has multiple fixing bolts (5) for connecting the two U-shaped connecting plates (3). The U-shaped connecting plates (3) have positioning components for aligning the connecting holes (4) with each other.

2. The front and rear split frame according to claim 1, characterized in that: The positioning component includes positioning holes (6) on opposite sidewalls of the two loop-shaped connecting plates (3), and a positioning pin (7) is provided between the two loop-shaped connecting plates (3), with both ends of the positioning pin (7) located in the positioning holes (6).

3. The front and rear split frame according to claim 2, characterized in that: The rear frame (2) is hinged to two sides at one end away from the U-shaped connecting plate (3) for tilting the machine body left and right and bearing heavy loads. The rear frame (2) is provided with a support plate (9) below the height adjustment cylinder (8). The support plate (9) is horizontally placed. Pressure plates (10) are fixedly connected to both ends of the upper surface of the support plate (9). Friction plates (11) are fixedly connected to one side of the upper surface of the support plate (9) on the side of the pressure plate (10).

4. A front and rear split frame according to claim 3, characterized in that: The height adjustment cylinder (8) is hinged to a sliding shoe (12) at one end away from the rear frame (2). The sliding shoe (12) is located between the pressure plate (10) and the friction plate (11) and forms a sliding arrangement. The bottom end of the rear frame (2) is hinged to two support legs (15). The ends of the support legs (15) away from the rear frame (2) are respectively hinged to the sliding shoe (12).

5. A front and rear split frame according to claim 4, characterized in that: The rear frame (2) is hinged at the bottom of one end away from the U-shaped connecting plate (3) to an adjustment cylinder (13) for moving the machine left and right. A hinge seat (14) is fixedly connected to one side of the upper surface of the support plate (9). The end of the adjustment cylinder (13) away from the rear frame (2) is hinged to the hinge seat (14).

6. A front and rear split frame according to claim 5, characterized in that: Multiple anti-slip pins (16) are fixedly connected to the lower surface of the support plate (9).

7. A front and rear split frame according to claim 6, characterized in that: Multiple triangular reinforcing blocks (17) are fixedly connected to the opposite side walls of the two U-shaped connecting plates (3), and the triangular reinforcing blocks (17) are fixedly connected to the front frame (1) and the rear frame (2) respectively.

8. A front and rear split frame according to claim 7, characterized in that: Multiple concave anti-loosening blocks (18) are fixedly connected to the two U-shaped connecting plates (3), and strain sensors (19) are installed on the anti-loosening blocks (18).

Images