A joist assembly and a heading machine

Abstract

The utility model relates to the technical field of heading machine, especially to a beam support assembly and heading machine, the beam support assembly includes beam support, fixed bottom plate, main platform and drive part, and the fixed bottom plate is installed on the cutting part, the beam support is installed on the main platform, the main platform is slidably connected on the fixed bottom plate, and can slide along the direction close to or away from the cutting head on the cutting part, the drive part is drivenly connected with the main platform, is used for driving the main platform to slide on the fixed bottom plate, so that the beam support can move to the close or away from the beam support position with the main platform, and the beam support position is the position that the beam support can hold up the steel beam to be fixed, the utility model can realize that the beam support can move to the beam support position with the main platform and hold up the steel beam to be fixed, and the beam support can move away from the beam support position with the main platform, so that the beam support does not affect the operation of the cutting head.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine technology, and in particular to a beam support assembly and a tunneling machine. Background Technology

[0002] Currently, tunneling machines have become the main equipment in coal mining, primarily used for tunneling coal roadways, semi-coal roadways, and all-rock roadways. As is well known, some coal mines have poor roof conditions and are prone to roof falls (collapses). Therefore, for safety reasons, mines with poor roof conditions require the installation of arched steel beams at a distance of no more than 800mm from the facing face to reinforce the roadway. These arched steel beams generally weigh more than 100 kilograms and need to be lifted to the top of the roadway (the top of the roadway is generally about 3.5 meters). The steel beams are lifted using a beam support device installed on the tunneling machine.

[0003] However, existing beam supports are all fixed to the cutting section. If the beam support is fixed too far forward on the cutting section, it will affect the cutting height of the cutting head. If the beam support is fixed too far back on the cutting section, when the beam needs to be lifted, the beam support may not be able to reach above the cutting head, thus affecting the lifting height of the beam support. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this utility model provides a beam support assembly that can move with the main platform to the beam support position to support the steel beam to be fixed, and can also move with the main platform away from the beam support position so that the beam support does not affect the operation of the cutting head.

[0006] This utility model also provides a tunneling machine including the above-mentioned beam support assembly.

[0007] A beam support assembly according to a first aspect of the present invention, applied to a tunneling machine, includes: Beam support; The base plate is fixed and installed on the cutting section; The main platform and the beam support are installed on the main platform; the main platform can be slidably connected to the fixed base plate and can slide in the direction of approaching or away from the cutting head on the cutting section; The drive unit, connected to the main platform drive, is used to drive the main platform to slide on the fixed base plate so that the beam support can move with the main platform to a position close to or away from the beam support; the beam support position is the position where the beam support can lift the steel beam to be fixed.

[0008] Optionally, the main platform is slidably connected to the fixed base plate via a sliding connection component, the sliding connection component including: The chute is installed on the fixed base plate, and the length direction of the chute is parallel to the axis direction of the cutting head; The slide bar is installed on the main platform and is set parallel to the axis of the cutting head. The slide bar can be slidably connected to the slide groove so that the main platform can be slidably connected to the fixed base plate with the cooperation of the slide bar and the slide groove.

[0009] Optionally, the drive unit includes a hydraulic cylinder located on the side of the main platform. The first end of the hydraulic cylinder is connected to the side of the main platform, and the second end of the hydraulic cylinder is connected to the fixed base plate. The length direction of the hydraulic cylinder is parallel to the axis direction of the cutting head.

[0010] Optionally, the hydraulic cylinder includes: The cylinder is connected to the side of the main platform; The piston rod is telescopically mounted inside the cylinder, with the end of the piston rod away from the cylinder connected to a fixed base plate.

[0011] Optionally, the slide bar is a square steel bar with a hollow structure. The slide bar is connected to the side of the main platform, and the cylinder is installed in the hollow structure of the slide bar.

[0012] Optionally, it also includes a flipping platform, with a flipping platform movably connected to each side of the main platform. The flipping platform has an unfolded position and a retracted position. The unfolded position is when the flipping platform is flipped relative to the main platform so that it is on the same plane as the main platform. The retracted position is when the flipping platform is flipped relative to the main platform so that it is located on the upper surface of the main platform.

[0013] Optionally, both the tilting platform and the main platform are provided with multiple connectors. When the tilting platform is in the unfolded position, the multiple connectors are distributed on the outside of the working platform formed by the tilting platform and the main platform; and when the tilting platform is in the unfolded position, the multiple connectors can be plugged into the guardrail.

[0014] Optionally, the beam support includes: Mounting bracket, attached to the top of the main platform; The first end of the support beam is rotatably connected to the mounting base, and the second end of the support beam can move towards or away from the cutting head as the first end rotates on the mounting base.

[0015] Optionally, the base plate can be detachably mounted on the cutting section.

[0016] A tunneling machine according to a second aspect of the present invention is characterized in that it includes the beam support assembly of the first aspect and various embodiments.

[0017] One of the above technical solutions has at least the following advantages or beneficial effects: In one embodiment of this utility model, a beam support assembly is installed by mounting a fixed base plate on the cutting section and mounting the beam support on a main platform that can be slidably connected to the fixed base plate. The main platform is then driven to slide on the fixed base plate by a drive unit, so that the beam support can move with the main platform to a position close to or far from the beam support. This allows the beam support to move with the main platform to the beam support position to support the steel beam to be fixed when it is necessary to lift it, and the beam support can move with the main platform to a position far from the beam support position before the cutting head starts operating, so that the beam support does not affect the operation of the cutting head.

[0018] The tunneling machine provided in this embodiment of the utility model is equipped with the beam support assembly mentioned above. Since the beam support assembly has the above-mentioned technical effects, the tunneling machine equipped with the beam support assembly should also have the corresponding technical effects. Attached Figure Description

[0019] Figure 1 An exploded view of a beam support assembly according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the cutting portion according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the beam support assembly according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the beam support assembly according to another embodiment of the present invention is shown; Figure 5 This invention provides a schematic diagram of the structure of a beam support assembly mounted on a cutting section according to an embodiment of the present invention. Figure 6 A schematic diagram of a beam support assembly mounted on a cutting section according to another embodiment of the present invention is shown; Figure 7 This invention provides a schematic diagram of the structure of a beam support assembly mounted on a cutting section, according to another embodiment of the present invention. Figure 8 A schematic diagram of a tunneling machine with a beam support assembly according to an embodiment of the present invention is shown.

[0020] [Explanation of Labels in the Attached Image] 1-Beam support, 101-Mounting base, 102-Beam support section; 2-Fixed base plate; 3-Main platform; 4-Cutting section, 401-Cutting head, 402-Motor housing, 403-Connecting plate; 5-Sliding connection assembly, 501-Slide groove, 502-Slide bar, 503-Cover plate; 6-Hydraulic cylinder, 601-Piston rod; 7-Connector; 8-Protection board; 9- Flip platform; 10- Cotter pin; 11-Connector; 12-Guardrail. Detailed Implementation

[0021] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Existing beam support devices are fixed to the cutting section of the tunneling machine. When the cutting head is working, the beam support device is flipped backward, away from the cutting head. When the beam needs to be supported, it is flipped forward, closer to the cutting head, so that it reaches above the cutting head and supports the steel beam. Therefore, if the beam support device is positioned too far forward on the cutting section, it affects the cutting height of the cutting head; conversely, if it is positioned too far back, it may not be able to reach above the cutting head, thus affecting its lifting height.

[0023] To address at least one of the technical problems existing in the prior art or related technologies, this utility model provides a beam support assembly, which includes a beam support, a fixed base plate, a main platform, and a drive unit. The fixed base plate is mounted on the cutting section; the beam support is mounted on the main platform; the main platform is slidably connected to the fixed base plate and can slide towards or away from the cutting head on the cutting section; the drive unit is drivenly connected to the main platform and is used to drive the main platform to slide on the fixed base plate, so that the beam support can move with the main platform to a position close to or away from the beam support; the beam support position is the position where the beam support can lift the steel beam to be fixed. Therefore, this utility model can achieve the following: when it is necessary to lift the steel beam to be fixed, the beam support can move with the main platform to the beam support position to lift the steel beam to be fixed; and before the cutting head operates, the beam support can move with the main platform away from the beam support position so that the beam support does not affect the operation of the cutting head.

[0024] The following description, with reference to the accompanying drawings, describes some embodiments of the beam support assembly and tunneling machine provided by the present invention.

[0025] See Figures 1 to 7This utility model provides an embodiment of a beam support assembly applied to a tunneling machine. The beam support assembly includes a beam support 1, a fixed base plate 2, a main platform 3, and a drive unit. The fixed base plate 2 is mounted on a cutting section 4; the beam support 1 is mounted on the main platform 3; the main platform 3 is slidably connected to the fixed base plate 2 and can slide in a direction close to or away from the cutting head 401 on the cutting section 4; the drive unit is drivenly connected to the main platform 3 and is used to drive the main platform 3 to slide on the fixed base plate 2 so that the beam support 1 can move with the main platform 3 to a position close to or away from the beam support position; the beam support position is the position where the beam support 1 can lift the steel beam to be fixed.

[0026] Here, a portion of the fixed base plate 2 is connected to the motor housing 402 on the cutting section 4, and a portion of the fixed base plate 2 can be connected to the connecting plate 403 between the motor housing 402 and the cutting head 401.

[0027] Here, when the drive unit drives the main platform 3 to slide on the fixed base plate 2 so that the beam support 1 can move with the main platform 3 to a position away from the beam support, the beam support 1 can move with the main platform 3 to above the motor housing 402 of the cutting unit 4 so that after the beam support 1 moves away from the cutting head 401, the cutting head 401 can operate without interference from the beam support assembly.

[0028] It should be noted that, see Figure 6 When the cutting section 4 is performing cutting operations, the main platform 3 is driven by the drive unit to slide on the fixed base plate 2, so that the main platform 3 moves to a position away from the cutting head 401, that is, moves the main platform 3 above the motor housing 402, so that the beam support 1 located on the main platform 3 moves away from the cutting head 401; see Figure 7 When the cutting section 4 finishes its cutting operation and it is necessary to lift the steel beam to be fixed above the cutting section 4, the main platform 3 is driven by the drive unit to slide on the fixed base plate 2 toward the cutting head 401, so that the beam support 1 can move with the main platform 3 to the beam support position, thereby lifting the steel beam to be fixed. In addition, after the beam support 1 finishes lifting the steel beam to be fixed, the main platform 3 is driven by the drive unit to slide on the fixed base plate 2 away from the cutting head 401, so that the beam support 1 can move with the main platform 3 to the top of the motor housing 402, thereby completing the retrieval of the beam support 1.

[0029] In this embodiment, by installing the fixed base plate 2 on the cutting section 4 and installing the beam support 1 on the main platform 3 which can be slidably connected to the fixed base plate 2, and then using the driving unit to drive the main platform 3 to slide on the fixed base plate 2, the beam support 1 can move with the main platform 3 to a position close to or far from the beam support position. This enables the beam support 1 to move with the main platform 3 to the beam support position to support the steel beam to be fixed when it is necessary to lift the steel beam to be fixed, and the beam support 1 to move away from the beam support position with the main platform 3 before the cutting head 401 starts working, so that the beam support 1 does not affect the operation of the cutting head 401.

[0030] In some possible embodiments, the main platform 3 is slidably connected to the fixed base plate 2 via a sliding connection assembly 5. The sliding connection assembly 5 includes a slide groove 501 and a slide bar 502. The slide groove 501 is mounted on the fixed base plate 2, and the length direction of the slide groove 501 is parallel to the axial direction of the cutting head 401. The slide bar 502 is mounted on the main platform 3 and is arranged parallel to the axial direction of the cutting head 401. The slide bar 502 can be slidably connected to the slide groove 501 so that the main platform 3 is slidably connected to the fixed base plate 2 with the cooperation of the slide bar 502 and the slide groove 501.

[0031] Here, the slide 501 can be detachably mounted on the fixed base plate 2 via bolt assembly.

[0032] It should be noted that the axis of the cutting head 401 can be on the same straight line as the axis of the motor housing 402 on the cutting part 4.

[0033] In this embodiment, by selecting the sliding connection component 5 as a structure including a sliding groove 501 and a sliding strip 502, and making the length direction of the sliding groove 501 installed on the fixed base plate 2 parallel to the axial direction of the cutting head 401, and making the sliding strip 502, which is arranged parallel to the axial direction of the cutting head 401, connected to the main platform 3, the main platform 3 can slide on the fixed base plate 2 with the cooperation of the sliding strip 502 and the sliding groove 501 when the sliding strip 502 can be slidably connected to the sliding groove 501, so that the beam support 1 can move with the main platform 3 to a position close to or far from the beam support.

[0034] Furthermore, the drive unit includes a hydraulic cylinder 6, which is located on the side of the main platform 3. The first end of the hydraulic cylinder 6 is connected to the side of the main platform 3, and the second end of the hydraulic cylinder 6 is connected to the fixed base plate 2. The length direction of the hydraulic cylinder 6 is parallel to the axial direction of the cutting head 401.

[0035] Here, by connecting the first end of the hydraulic cylinder 6, whose length direction is parallel to the axis of the cutting head 401, to the side of the main platform 3, and the second end of the hydraulic cylinder 6 to the fixed base plate 2, the main platform 3 can move relative to the fixed base plate 2 along the axis of the cutting head 401 under the driving action of the hydraulic cylinder 6, thereby enabling the beam support 1 to move to a position close to or far from the beam support as the main platform 3 moves on the fixed base plate 2.

[0036] Furthermore, the hydraulic cylinder 6 includes a cylinder barrel and a piston rod 601. The cylinder barrel is connected to the side of the main platform 3; the piston rod 601 is telescopically disposed inside the cylinder barrel, and the end of the piston rod 601 away from the cylinder barrel is connected to the fixed base plate 2.

[0037] The main platform 3 is equipped with a connecting seat 7. The end of the piston rod 601 away from the cylinder can be connected to the connecting seat 7 by bolts, so that the end of the piston rod 601 away from the cylinder is connected to the fixed base plate 2. The cylinder can be installed on the side of the main platform 3 by a pin. In addition, a protective plate 8 is connected above the connecting seat 7. The protective plate 8 is located above the position where the piston rod 601 is installed on the connecting seat 7, and is used to protect the position of the piston rod 601 that is used to connect with the connecting seat 7.

[0038] In this embodiment, by connecting the cylinder of the hydraulic cylinder 6 to the side of the main platform 3 and connecting the end of the piston rod 601 away from the cylinder to the fixed base plate 2, not only can the hydraulic cylinder 6 be stably installed on the main platform 3 and the fixed base plate 2, but also the movement of the main platform 3 on the fixed base plate 2 can be controlled by the movement of the piston rod 601 relative to the cylinder.

[0039] Furthermore, the slide bar 502 is a square steel with a hollow structure. The slide bar 502 is connected to the side of the main platform 3, and the cylinder is installed in the hollow structure of the slide bar 502.

[0040] Here, the sliding connection assembly 5 also includes a cover plate 503. After the slide bar 502 is installed in the slide groove 501, the cover plate 503 covers the slide groove 501 so that an installation space is formed between the slide groove 501 and the cover plate 503. This installation space allows the slide bar 502 to move only along its length direction, so as to ensure that the main platform 3 connected to the slide bar 502 can only move along the length direction of the slide bar 502.

[0041] In this embodiment, by selecting a square steel with a hollow structure as the slide bar 502 and connecting the slide bar 502 to the side of the main platform 3, not only can the main platform 3 move along the length direction of the slide bar 502 with the cooperation between the slide bar 502 and the slide groove 501, but also by installing the cylinder in the hollow structure of the slide bar 502, damage caused by the cylinder being exposed can be avoided, and installation space for the cylinder can be saved.

[0042] In some possible embodiments, a flipping platform 9 is also included. A flipping platform 9 is movably connected to each side of the main platform 3. The flipping platform 9 has an unfolded position and a retracted position. The unfolded position is when the flipping platform 9 is flipped relative to the main platform 3 so that it is on the same plane as the main platform 3. The retracted position is when the flipping platform 9 is flipped relative to the main platform 3 so that it is located on the upper surface of the main platform 3.

[0043] Here, the flipping platform 9 is provided with a cotter pin 10, and the side of the main platform 3 is provided with a pin hole. The flipping platform 9 can be flipped and connected to the side of the main platform 3 through the cooperation between the pin, the cotter pin 10 and the pin hole.

[0044] In this embodiment, see Figure 4 A tilting platform 9 is movably connected to each side of the main platform 3. By extending both tilting platforms 9, the area of ​​the main platform 3 is increased, allowing workers to stand on the tilting platforms 9, which are on the same plane as the surface of the main platform 3, to assist in lifting the steel beam with the beam support 1; simultaneously, see... Figure 5 and Figure 6 When the beam support 1 is not needed to support the steel beam, the flipping platform 9 can be flipped to the storage position so that the flipping platform 9 is located on the upper surface of the main platform 3, thereby avoiding the occupation of the assembly space of the flipping platform 9 on the cutting part 4 when the beam support 1 is not needed.

[0045] Further, see Figure 1 and Figure 3 Both the flipping platform 9 and the main platform 3 are provided with multiple connectors 11. When the flipping platform 9 is in the unfolded position, the multiple connectors 11 are distributed on the outside of the working platform formed by the flipping platform 9 and the main platform 3. When the flipping platform 9 is in the unfolded position, the multiple connectors 11 can be plugged into the guardrail 12.

[0046] In this embodiment, by providing multiple connectors 11 on both the flipping platform 9 and the main platform 3, and when the flipping platform 9 is in the unfolded position, the multiple connectors 11 are distributed on the outside of the working platform formed by the flipping platform 9 and the main platform 3, so that the multiple connectors 11 can be plugged into the guardrail 12, thereby enabling the guardrail 12 to be detachably installed on the working platform, thereby improving the safety of the workers on the flipping platform 9 or the main platform 3.

[0047] Meanwhile, since the guardrail 12 is fixed by being plugged into multiple connectors 11, the guardrail 12 can be removed after the workers have completed their work on the flipping platform 9 or the main platform 3, so that the flipping platform 9 after the guardrail 12 is removed can be smoothly flipped to its storage position.

[0048] In some possible embodiments, the beam support 1 includes a mounting base 101 and a beam support 102. The mounting base 101 is connected to the top of the main platform 3. The first end of the beam support 102 is rotatably connected to the mounting base 101, and the second end of the beam support 102 can move toward or away from the cutting head 401 as its first end rotates on the mounting base 101.

[0049] It should be noted that the first end of the support beam 102 is rotatably mounted on the mounting base 101 via a connecting shaft, and the axis of the connecting shaft is perpendicular to the length direction of the cutting part 4. When the first end of the support beam 102 rotates on the mounting base 101, the first end of the support beam 102 can rotate around the axis of the connecting shaft to move the second end of the support beam 102 toward or away from the cutting head 401.

[0050] Specifically, when using the beam support 1 to lift the steel beam to be fixed, the beam support 1 is first moved with the main platform 3 to the beam support position. Then, the operator rotates the first end of the beam support part 102 on the mounting base 101, so that the second end of the beam support part 102 moves towards the cutting head 401 along with the rotation of its first end on the mounting base 101, until the second end of the beam support part 102 lifts the steel beam. When the beam support 1 is not needed to lift the steel beam to be fixed, the operator first rotates the first end of the beam support part 102 on the mounting base 101, so that the second end of the beam support part 102 moves away from the cutting head 401 along with the rotation of its first end on the mounting base 101, until the second end of the beam support part 102 is close to the upper surface of the main platform 3. Then, the beam support 1 is moved with the main platform 3 to a position away from the beam support position, completing the retrieval of the beam support assembly. At this time, the cutting head 401 can perform the cutting operation.

[0051] In this embodiment, by selecting a structure for the beam support 1 that includes a mounting base 101 and a beam support portion 102, and by rotatably connecting the first end of the beam support portion 102 to the mounting base 101, and by allowing the second end of the beam support portion 102 to move closer to or further away from the cutting head 401 as its first end rotates on the mounting base 101, it is possible to rotate the beam support portion 102 on the mounting base 101 when the beam support 1 is needed to lift the steel beam, so that the beam support portion 102 is adjusted to a position where it can lift the steel beam, and when the beam support 1 is not needed to lift the steel beam, the beam support portion 102 is rotated on the mounting base 101 to a position away from where it can lift the steel beam, thereby avoiding the influence of the beam support portion 102 on the operation of the cutting head 401 when the cutting head 401 is cutting.

[0052] In some possible embodiments, the base plate 2 is detachably mounted on the cutting section 4.

[0053] It should be noted that the cutting part 4 has a connecting hole at the position for mounting the fixed base plate 2. When the fixed base plate 2 is installed on the cutting part 4, the fixed base plate 2 is detachably installed on the cutting part 4 through the cooperation between the bolt and the connecting hole.

[0054] In this embodiment, by selecting a detachable installation method for the fixed base plate 2 on the cutting part 4, the connection flexibility between the fixed base plate 2 and the cutting part 4 is improved, so as to facilitate the removal of the fixed base plate 2 on the cutting part 4, thereby facilitating the maintenance or replacement of the entire beam support assembly.

[0055] See Figure 8 The present invention provides a tunneling machine according to one embodiment, which includes a beam support assembly as described in any of the above embodiments.

[0056] Since the tunneling machine of this embodiment includes any of the beam support assemblies in the first aspect described above, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0057] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A beam support assembly, used in a tunneling machine, characterized in that, include: Beam support; The base plate is fixed and installed on the cutting section; The main platform, on which the beam support is mounted; The main platform is slidably connected to the fixed base plate and can slide in the direction of approaching or away from the cutting head on the cutting part; The drive unit, connected to the main platform, is used to drive the main platform to slide on the fixed base plate, so that the beam support can move with the main platform to a position close to or far from the beam support; the beam support position is the position where the beam support can lift the steel beam to be fixed.

2. The beam support assembly according to claim 1, characterized in that, The main platform is slidably connected to the fixed base plate via a sliding connection assembly, the sliding connection assembly comprising: A chute is installed on the fixed base plate, and the length direction of the chute is parallel to the axial direction of the cutting head; A slide bar is installed on the main platform and is arranged parallel to the axis of the cutting head. The slide bar can be slidably connected to the slide groove so that the main platform can be slidably connected to the fixed base plate with the cooperation of the slide bar and the slide groove.

3. The beam support assembly according to claim 2, characterized in that, The drive unit includes a hydraulic cylinder located on the side of the main platform. The first end of the hydraulic cylinder is connected to the side of the main platform, and the second end of the hydraulic cylinder is connected to the fixed base plate. The length direction of the hydraulic cylinder is parallel to the axial direction of the cutting head.

4. The beam support assembly according to claim 3, characterized in that, The hydraulic cylinder includes: The cylinder is connected to the side of the main platform; The piston rod is telescopically disposed inside the cylinder, and the end of the piston rod away from the cylinder is connected to the fixed base plate.

5. The beam support assembly according to claim 4, characterized in that, The slide bar is a square steel bar with a hollow structure. The slide bar is connected to the side of the main platform, and the cylinder is installed in the hollow structure of the slide bar.

6. The beam support assembly according to claim 1, characterized in that, It also includes a flipping platform, with a flipping platform movably connected to each side of the main platform. The flipping platform has an unfolded position and a retracted position. The unfolded position is when the flipping platform is flipped relative to the main platform so that it is on the same plane as the main platform. The retracted position is when the flipping platform is flipped relative to the main platform so that it is located on the upper surface of the main platform.

7. The beam support assembly according to claim 6, characterized in that, Both the flipping platform and the main platform are provided with multiple connectors. When the flipping platform is in the unfolded position, the multiple connectors are distributed on the outside of the working platform formed by the flipping platform and the main platform. When the flipping platform is in the unfolded position, the multiple connectors can be plugged into the guardrail.

8. The beam support assembly according to claim 1, characterized in that, The beam support includes: Mounting bracket, connected to the top of the main platform; The first end of the support beam is rotatably connected to the mounting base, and the second end of the support beam can move toward or away from the cutting head as its first end rotates on the mounting base.

9. The beam support assembly according to claim 1, characterized in that, The fixed base plate is detachably mounted on the cutting section.

10. A tunneling machine, characterized in that, Includes the beam support assembly as described in any one of claims 1 to 9.

Images