Straddle type multi-frame combined temporary support equipment and supporting method thereof

Abstract

This invention discloses a straddle-type multi-frame combined temporary support equipment and its support method, which includes a single straddle-type temporary support frame; the single straddle-type temporary support frame includes a walking track assembly; side beam lifting components are fixed on the frame of the two walking track assemblies respectively, and a top beam assembly is connected between the top ends of the two sets of side beam lifting components; a set of side protection components is connected to the outer wall of each side beam lifting assembly. Advantages: The straddle-type temporary support achieves self-propelled track movement, moving forward sequentially without the need for support transport vehicle assistance; the addition of a coal cleaning device provides stronger roadway passage capacity and auxiliary coal extraction capacity; the adjustable design of the top beam assembly can adapt to different undulating roof conditions and maintain a close fit; five single-frame straddle-type temporary support frames provide a large area of ​​temporary support from the head to the tail of the roadheader, transferring the permanent support space to the rear of the machine, and can be equipped with a turning scraper conveyor and a bolt drilling rig to form a complete fast tunneling equipment system.

Description

Technical Field

[0001] This invention relates to the field of support equipment technology for underground roadways in coal mines, and particularly to a straddle-type multi-frame combined temporary support equipment and its support method. Background Technology

[0002] In coal mining, the tunneling face is a crucial production site. However, due to complex geological conditions and harsh working environments, the support work at the tunneling face is particularly important. Therefore, the research and development and application of temporary support equipment has become key to solving these problems.

[0003] Common temporary support methods include: (1) Tunneling machine onboard temporary support device: the roof area is generally small, it does not have the ability to protect the sides, the initial support force is insufficient, and the safety and reliability are low; the space is limited, and the safety risk of personnel operation is high. (2) Straddle-type temporary support support: it cannot move independently, it cannot form dense protection of the roof and sides, and other equipment is required for installation and movement. (3) Shield-type temporary support device: it cannot adapt to the changes in the roof and sides of the roadway, the initial support force is insufficient, and the safety and reliability are poor; the equipment size is large, which affects the working space of the tunneling machine face, and it is difficult to clean the floating coal on both sides; the supporting equipment is incomplete. (4) Cross-stepping type temporary support support: it cannot adapt to the changes in the roof of the roadway, it does not have the ability to protect the sides, and the safety and reliability are generally small; it has no independent movement function, and the labor intensity of personnel is high; personnel need to enter the empty roof to assist the unit for support, and the risk of personnel operation is high; the supporting equipment is incomplete, which affects the working space of tunneling equipment and personnel.

[0004] The existing four temporary support methods suffer from low efficiency and poor safety and reliability. Furthermore, they cannot be integrated with other equipment to form a complete rapid excavation process, thus failing to meet the needs of modern coal mine production. Summary of the Invention

[0005] The purpose of this invention is to provide a straddle-type multi-frame combined temporary support equipment and its support method, which can effectively ensure the strength of temporary support, form a dense and reliable temporary support for the roof and side walls, and has the advantages of autonomous movement, floating coal cleaning, strong passage capacity, and parallel tunneling and support. It can effectively solve the problems of poor continuity of tunneling and support operations, low degree of automation, poor safety and reliability, and inability to cooperate with other tunneling and support equipment to form a complete set of rapid tunneling equipment in the prior art.

[0006] The present invention is implemented by the following technical solution: a straddle-type multi-frame combined temporary support equipment, which includes one or more single straddle-type temporary support frames; the single straddle-type temporary support frame includes a track assembly, a top beam assembly, a side beam lifting assembly, and a side guard assembly; a set of the side beam lifting assemblies is fixed on the frame of each of the two track assemblies, and the top beam assembly is connected between the top ends of the two sets of side beam lifting assemblies; a set of the side guard assembly is connected to the outer side wall of each side beam lifting assembly.

[0007] Furthermore, the top beam assembly includes a top beam and auxiliary beams. Multiple sets of auxiliary beams are hinged to the front and rear sides of the top beam via lugs. Two corresponding auxiliary beams form a group, and the two auxiliary beams in each group are connected by an adjusting top beam hydraulic cylinder. The angle of each auxiliary beam is adjusted by adjusting the extension and retraction of the top beam hydraulic cylinder.

[0008] Furthermore, the side beam lifting assembly includes a lifting cylinder, a vertical guide frame, and a lifting main beam that moves up and down along the vertical guide frame; the bottom end of the vertical guide frame is fixed to the frame of the walking track assembly, and a lifting cylinder is provided on the front and rear sides of each vertical guide frame. The bottom end of the cylinder body of the lifting cylinder is hinged to the base of the vertical guide frame, and the telescopic end of the lifting cylinder is hinged to the top beam of the top beam assembly; the top end of the lifting main beam is hinged to the top beam of the top beam assembly through an ear seat.

[0009] Furthermore, the side protection assembly includes a side protection plate adjusting cylinder, a side protection plate, and a side protection plate support arm; the side protection plate is connected to the lifting main beam through two sets of upper and lower side protection plate support arms, the cylinder end of the side protection plate adjusting cylinder is hinged to the lifting main beam, and the telescopic end of the side protection plate adjusting cylinder is hinged to the lower side protection plate support arm.

[0010] Furthermore, it includes five single-frame straddle-type temporary support supports, namely the first temporary support support, the second temporary support support, the third temporary support support, the fourth temporary support support, and the last temporary support support, to achieve five-frame joint temporary support.

[0011] Furthermore, a coal cleaning device is installed at the front end of each of the two track assemblies of the first temporary support frame; the coal cleaning device includes a coal shovel plate, an adjusting cylinder and two oppositely arranged connecting plates; one end of the connecting plate is swayed and connected to the front end of the track assembly, the coal shovel plate is fixed to the connecting plate, the cylinder end of the adjusting cylinder is hinged to the side wall of the track assembly, and the telescopic end of the adjusting cylinder is hinged to the other end of the connecting plate.

[0012] Furthermore, a connecting shaft is rotatably provided between the two connecting plates at the front end of the coal shovel plate, a spiral blade is fixed on the connecting shaft, and the shaft end of the connecting shaft is connected to the output shaft of a hydraulic motor.

[0013] Furthermore, in the five single-frame straddle-type temporary support supports, the rear row of auxiliary beams of the previous support is staggered with the front row of auxiliary beams of the adjacent rear support; wherein, the length of the front row of auxiliary beams of the second temporary support support is greater than the length of the other auxiliary beams and extends forward to the front row of auxiliary beams of the first temporary support support.

[0014] Furthermore, the last temporary support frame is equipped with a centralized control unit valve group, which has an external power interface, powered by other hydraulic power equipment. This eliminates the need for its own oil pump, oil pump motor, and other power equipment, significantly reducing the overall size of the support equipment.

[0015] The support method using straddle-mounted multi-frame combined temporary support equipment includes the following steps: S1. Equipment layout: The first, second, and third temporary support frames straddle the top of the tunneling machine; the fourth temporary support frame straddles the top of the turning scraper conveyor; and the last temporary support frame straddles the top of the bolt drilling rig. S2. The tunneling machine performs coal cutting operations to form an open roof. After the coal cutting is completed, the tunneling machine retreats to the first temporary support frame. S3. The first temporary support frame transitions from the supported state to the retracted state: S3-1, The lifting cylinder of the side beam lifting assembly retracts, thereby lowering the overall height of the top beam assembly and the side beam lifting assembly; S3-2, The side guard plate adjusting cylinders of the two side guard components are retracted to the appropriate position to retract the side guard plates; S4. The first temporary support frame starts the coal cleaning device and moves forward to the unsupported roof position; S5. The first temporary support frame is switched from the retracted state to the supported state, that is, the lifting cylinder and the side plate adjusting cylinder are extended to make the top beam and auxiliary beam support the top plate and the side plate support the two sides. S6. The secondary temporary support frame changes from the supported state to the retracted state and moves to the original support position of the first temporary support frame, and then changes from the retracted state to the supported state. S7. The third temporary support frame to the last temporary support frame are retracted one by one and moved forward to the original position of the previous support frame for support. S8. Under the cover of the five joint temporary support equipment, the anchor drilling rig performs permanent support, and the tunneling machine simultaneously performs the next cycle of coal cutting operation. Each single straddle-type temporary support frame repeats the above steps S1~S7.

[0016] The advantages of this invention are: 1. The straddle-type temporary support enables self-propelled tracked movement, eliminating the need for a support transport vehicle for auxiliary handling; 2. Five single-frame straddle-type temporary support supports move forward sequentially, providing a foundation for parallel tunneling and support operations; 3. The installed coal cleaning device provides enhanced roadway traffic capacity and auxiliary coal extraction capacity; 4. The vertical guidance of the side beam lifting assembly provides more stable support, is less prone to deviation, and offers higher safety; 5. The adjustable design of the top beam assembly can adapt to different roof undulations, maintaining a close fit with the roof at all times; 6. The installed top beam, auxiliary beam, and sidewall plates, in conjunction with the laid mesh, form a densely interwoven, top-side coordinated, all-around temporary protection system for the roadway, providing safe, reliable, and effective protection for workers and equipment; 7. The temporary support area extends to the rear of the roadheader, creating a safe and reliable working environment for permanent anchor bolt support behind the roadheader. 8. Five single-frame straddle-type temporary support supports are used to achieve joint temporary support, providing a large area of ​​temporary support from the head to the tail of the roadheader. The permanent support space is transferred to the rear of the machine. It is equipped with a turning scraper conveyor and a bolt drilling rig to form a complete fast tunneling equipment system. This enables the roadheader to cut coal continuously without stopping, with temporary support being provided as mining progresses and bolt drilling rig support following in parallel for rapid tunneling operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the single-frame straddle-type temporary support frame described in this invention.

[0019] Figure 2 This is a structural schematic diagram of the top beam assembly described in this invention.

[0020] Figure 3 This is a bottom view of the top beam assembly described in this invention.

[0021] Figure 4 This is a schematic diagram of the structure of the protective frame component described in this invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the protective arm component described in this invention.

[0023] Figure 6 This is a schematic diagram showing the usage status of the five single-frame straddle-type temporary support brackets described in this invention.

[0024] Figure 7This is a partially enlarged view of the coal cleaning device described in this invention.

[0025] Figure 8 This is a partial enlarged view of the valve group of the centralized control unit described in this invention.

[0026] The components in the attached diagram are labeled as follows: 1. Single-frame straddle-type temporary support frame; 1.1. Track assembly; 1.2. Top beam assembly; 1.21. Top beam; 1.22. Auxiliary beam; 1.23. Adjusting top beam cylinder; 1.3. Side beam lifting assembly; 1.3. Lifting cylinder; 1.31. Vertical guide frame; 1.32. Support plate; 1.321. Guide groove; 1.322. Lifting main beam; 1.33. Guide rail; 1.331. Side guard assembly; 1.4. Side guard plate adjusting cylinder; 1.41. Side guard plate; 1.42. Side guard plate support arm; 1.43. First temporary support frame; 2. Second temporary support frame; 3. Third temporary support frame; 4. Fourth temporary support frame; 5. Last temporary support frame; 6. Coal cleaning device; 7. Shovel plate; 7.1. Connecting plate; 7.2. Adjusting cylinder; 7.3. Connecting shaft; 7.4. Spiral blade; 7.5. Centralized control unit valve group; 8. External power interface; 8.1. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Example 1: As Figures 1 to 8 As shown, this embodiment provides a straddle-type multi-frame joint temporary support equipment, which includes five single straddle-type temporary support supports 1, namely the first temporary support support 2, the second temporary support support 3, the third temporary support support 4, the fourth temporary support support 5, and the last temporary support support 6, to achieve joint temporary support of five frames.

[0030] Each single straddle-type temporary support frame 1 includes a track assembly 1.1, a top beam assembly 1.2, a side beam lifting assembly 1.3, and a side guard assembly 1.4. The track assembly 1.1 includes a track frame, friction belt assembly, drive unit, etc., which is existing technology, and its specific structure will not be described in detail here. The track assembly 1.1 enables the single straddle-type temporary support frame 1 to move independently without the need for a transport vehicle. A set of side beam lifting assemblies 1.3 is fixed to the frame of each of the two track assemblies 1.3. The top beam assembly 1.2 is connected between the top ends of the two sets of side beam lifting assemblies 1.3, providing temporary support for the roof. A set of side guard assemblies 1.4 is connected to the outer wall of each side beam lifting assembly 1.3, providing temporary support for the side.

[0031] The top beam assembly 1.2 includes a top beam 1.21 and auxiliary beams 1.22. The left and right ends of the top beam 1.21 are connected to the top of two corresponding sets of side beam lifting assemblies 1.3. The front and rear sides of the top beam 1.21 are hinged to multiple sets of auxiliary beams 1.22 through lugs. Two corresponding auxiliary beams 1.22 form a group, and the two auxiliary beams 1.22 in each group are connected by adjusting the top beam hydraulic cylinder 1.23. Specifically, the two ends of the adjusting top beam hydraulic cylinder 1.23 are hinged to the corresponding auxiliary beams 1.22. By adjusting the top beam hydraulic cylinder 1.23, the unfolding angle of the auxiliary beams 1.22 can be adjusted to adapt to the roof with different undulations and always maintain a close fit with the roof.

[0032] The side beam lifting assembly 1.3 includes a lifting cylinder 1.31, a vertical guide frame 1.32, and a lifting main beam 1.33 that moves up and down along the vertical guide frame 1.32. The vertical guide frame 1.32 includes a support plate 1.321 and guide grooves 1.322 on both sides of the support plate 1.321. The lifting main beam 1.33 has guide rails 1.331 on both sides that move up and down along the corresponding guide grooves 1.322. The bottom end of the vertical guide frame 1.32 is fixed to the frame of the track assembly 1.1. Each vertical guide frame 1.32 has a lifting cylinder 1.31 on its front and rear sides, and the bottom end of the cylinder body of the lifting cylinder 1.31 is connected to the vertical guide frame 1.32. The base is hinged, and the telescopic end of the lifting cylinder 1.31 is hinged to the top beam 1.21 of the top beam assembly 1.2. The top end of the lifting main beam 1.33 is hinged to the top beam 1.21 of the top beam assembly 1.2 via an ear seat. By controlling the extension of the lifting cylinder 1.31, the lifting main beam 1.33 drives the top beam assembly 1.2 to rise along the vertical guide frame 1.32 to support the top plate. By controlling the retraction of the lifting cylinder 1.31, the lifting main beam 1.33 drives the top beam assembly 1.2 to fall, thus canceling the support for the top plate. Under the guidance of the vertical guide frame 1.32, the lifting main beam 1.33 can rise and fall more stably, thereby ensuring that the support for the top plate is more stable, less prone to displacement, and safer.

[0033] The side support assembly 1.4 includes a side support plate adjusting cylinder 1.41, a side support plate 1.42, and a side support plate support arm 1.43. The side support plate 1.42 is connected to the lifting main beam 1.33 through two sets of upper and lower side support plates 1.43. The two ends of the side support plate support arm 1.43 are hinged to the lifting main beam 1.33 and the side support plate 1.42, respectively. The cylinder end of the side support plate adjusting cylinder 1.41 is hinged to the lifting main beam 1.33, and the telescopic end of the side support plate adjusting cylinder 1.41 is hinged to the lower side support plate support arm 1.43. Controlling the side support plate adjusting cylinder 1.41 to extend pushes the side support plate support arm 1.43 to swing upward, causing the side support plate 1.42 to unfold and support the side of the roadway. Controlling the side support plate adjusting cylinder 1.41 to retract pulls the side support plate support arm 1.43 to swing downward, causing the side support plate 1.42 to retract and cancel the support for the side of the roadway.

[0034] In this embodiment, the top beam assembly 1.2 and the side support assembly 1.4 can be used to achieve full-coverage collaborative support for the top and sides of the roadway.

[0035] Coal cleaning devices 7 are installed at the front ends of the two track assemblies 1.1 of the first temporary support frame 2. The coal cleaning device 7 includes an arc-shaped coal shovel 7.1, a connecting plate 7.2, and an adjusting cylinder 7.3. One end of the connecting plate 7.2 is swayed and connected to the front end of the track assembly 1.1. The coal shovel 7.1 is fixed to the connecting plate 7.2. The cylinder end of the adjusting cylinder 7.3 is hinged to the side wall of the track assembly 1.1, and the telescopic end of the adjusting cylinder 7.3 is hinged to the other end of the connecting plate 7.2. During the forward movement of the first temporary support frame 2, the coal shovel 7.1 can be used to clean the loose coal on the ground to ensure the passability and stability of the support. According to the actual site conditions, the height of the coal shovel 7.1 can be adjusted by controlling the telescopic movement of the adjusting cylinder 7.3 to shovel coal more efficiently.

[0036] A connecting shaft 7.4 is rotatably connected between two connecting plates 7.2 at the front end of the coal shovel plate 7.1. A spiral blade 7.5 is fixed on the connecting shaft 7.4. The shaft end of the connecting shaft 7.4 is connected to the output shaft of a hydraulic motor (the hydraulic motor driving the shaft rotation is prior art, and the hydraulic motor is not shown in the figure). During the process of the connecting shaft 7.4 being driven to rotate by the hydraulic motor, the spiral blade 7.5 can sweep the coal accumulated in front of the coal shovel plate 7.1 to the inside of the walking track assembly 1.1, preventing the coal from accumulating in large quantities at the coal shovel plate 7.1, which would increase the movement resistance and make it difficult to clean the coal.

[0037] In the five single-frame straddle-type temporary support scaffolds, the rear auxiliary beams 1.22 of the preceding scaffold are staggered with the front auxiliary beams 1.22 of the adjacent following scaffold, achieving a dense protection effect on the roof slab during support. Metal steel mesh can be laid on the auxiliary beams 1.22 before support is installed to further enhance the protective effect. In this embodiment, the first temporary support scaffold 2, the third temporary support scaffold 4, and the last temporary support scaffold 6 each have three sets of auxiliary beams 1.22, while the second temporary support scaffold 3 and the fourth temporary support scaffold 5 each have... Four sets of auxiliary beams 1.22; among them, the length of the front row of auxiliary beams 1.22 of the secondary temporary support 3 is greater than the length of the other auxiliary beams 1.22, and extends forward to the front row of auxiliary beams 1.22 of the first temporary support 2; in this embodiment, the length of the front row of auxiliary beams 1.22 of the secondary temporary support 3 is twice the length of the other auxiliary beams 1.22; during the forward movement of the first temporary support 2, the front row of auxiliary beams 1.22 of the secondary temporary support 3 can still effectively protect the top plate at the original position of the first temporary support 2.

[0038] The last temporary support bracket 6 is equipped with a centralized control unit valve group 8, which facilitates centralized control of each individual straddle-type temporary support bracket 1; the centralized control unit valve group 8 is equipped with an external power interface 8.1, which is powered by other hydraulic power equipment, eliminating the need for its own oil pump, oil pump motor and other power equipment, thus greatly reducing the size of the entire support equipment.

[0039] Example 2: A method for providing support using the straddle-type multi-frame combined temporary support equipment of Example 1, comprising the following steps: S1. Equipment layout: The first, second, and third temporary support frames straddle the top of the tunneling machine; the fourth temporary support frame straddles the top of the turning scraper conveyor; and the last temporary support frame straddles the top of the bolt drilling rig. S2. The tunneling machine performs coal cutting operations to form an open roof. After the coal cutting is completed, the tunneling machine retreats to the first temporary support frame. S3. The first temporary support frame transitions from the supported state to the retracted state: S3-1, The lifting cylinder of the side beam lifting assembly retracts, thereby lowering the overall height of the top beam assembly and the side beam lifting assembly; S3-2, The side guard plate adjusting cylinders of the two side guard components are retracted to the appropriate position to retract the side guard plates; S4. The first temporary support frame starts the coal cleaning device and moves forward to the unsupported roof position; S5. The first temporary support frame is switched from the retracted state to the supported state, that is, the lifting cylinder and the side plate adjusting cylinder are extended to make the top beam and auxiliary beam support the top plate and the side plate support the two sides. S6. The secondary temporary support frame changes from the supported state to the retracted state and moves to the original support position of the first temporary support frame, and then changes from the retracted state to the supported state. S7. The third temporary support frame to the last temporary support frame are retracted one by one and moved forward to the original position of the previous support frame for support. S8. Under the cover of the five combined temporary support units, the bolt drilling rig performs permanent support, while the tunneling machine simultaneously performs the next round of coal cutting. Each individual straddle-type temporary support frame then repeats the above steps S1 to S7. Thus, the five combined temporary support units, together with the bolt drilling rig and the roadheader, complete the tunneling in one go without the need for back-and-forth retreat, thus not delaying the work time.

[0040] In this embodiment, five single-frame straddle-type temporary support supports are used to achieve joint temporary support, providing a large area of ​​temporary support from the head to the tail of the roadheader. The permanent support space is transferred to the rear of the machine. With the addition of a turning scraper conveyor and a bolt drilling rig, a complete rapid tunneling equipment system is formed, enabling the roadheader to cut coal continuously without stopping, with temporary support being provided as mining progresses and bolt drilling rig support following in parallel for rapid tunneling operations.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A straddle-mounted multi-frame combined temporary support equipment, characterized in that, It includes one or more single straddle-type temporary support frames; The single-frame straddle-type temporary support frame includes a walking track assembly, a top beam assembly, a side beam lifting assembly, and a side guard assembly; a set of the side beam lifting assemblies is fixed on the frame of each of the two walking track assemblies, and the top beam assembly is connected between the top ends of the two sets of side beam lifting assemblies. A set of side guard components is connected to the outer side wall of each of the side beam lifting assemblies.

2. The straddle-type multi-frame combined temporary support equipment according to claim 1, characterized in that, The top beam assembly includes a top beam and auxiliary beams. Multiple sets of auxiliary beams are hinged to the front and rear sides of the top beam via lugs. Two corresponding auxiliary beams form a group, and the two auxiliary beams in each group are connected by an adjusting top beam cylinder. The angle of each auxiliary beam is adjusted by adjusting the extension and retraction of the top beam cylinder.

3. The straddle-type multi-frame combined temporary support equipment according to claim 1, characterized in that, The side beam lifting assembly includes a lifting cylinder, a vertical guide frame, and a lifting main beam that moves up and down along the vertical guide frame; The bottom end of the vertical guide frame is fixed to the frame of the walking track assembly. Each vertical guide frame is provided with a lifting cylinder on its front and rear sides. The bottom end of the cylinder body of the lifting cylinder is hinged to the base of the vertical guide frame, and the telescopic end of the lifting cylinder is hinged to the top beam of the top beam assembly. The top end of the lifting main beam is hinged to the top beam of the top beam assembly through an ear seat.

4. The straddle-type multi-frame combined temporary support equipment according to claim 3, characterized in that, The side protection assembly includes a side protection plate adjusting cylinder, a side protection plate, and a side protection plate support arm; The side guard plate is connected to the lifting main beam via two sets of upper and lower side guard plate support arms. The cylinder end of the side guard plate adjusting cylinder is hinged to the lifting main beam, and the telescopic end of the side guard plate adjusting cylinder is hinged to the lower side guard plate support arm.

5. A straddle-type multi-frame combined temporary support equipment according to any one of claims 1 to 4, characterized in that, It includes five single-frame straddle-type temporary support supports, namely the first temporary support support, the second temporary support support, the third temporary support support, the fourth temporary support support, and the last temporary support support, to achieve five-frame joint temporary support.

6. A straddle-type multi-frame combined temporary support equipment according to claim 5, characterized in that, Coal cleaning devices are installed at the front ends of the two track assemblies of the first temporary support frame. The coal cleaning device includes a coal shovel, an adjusting cylinder, and two oppositely arranged connecting plates. One end of the connecting plate is swayed and connected to the front end of the track assembly. The coal shovel is fixed to the connecting plate. The cylinder end of the adjusting cylinder is hinged to the side wall of the track assembly. The telescopic end of the adjusting cylinder is hinged to the other end of the connecting plate.

7. A straddle-type multi-frame combined temporary support equipment according to claim 6, characterized in that, A connecting shaft is rotatably provided between the two connecting plates at the front end of the coal shovel plate. A spiral blade is fixed on the connecting shaft, and the shaft end of the connecting shaft is connected to the output shaft of a hydraulic motor.

8. A straddle-type multi-frame combined temporary support equipment according to claim 5, characterized in that, In the five single-frame straddle-type temporary support supports, the rear row of auxiliary beams of the preceding support is staggered with the front row of auxiliary beams of the adjacent following support; wherein, the length of the front row of auxiliary beams of the second temporary support support is greater than the length of the other auxiliary beams, and extends forward to the front row of auxiliary beams of the first temporary support support.

9. A straddle-type multi-frame combined temporary support equipment according to claim 5, characterized in that, The last temporary support frame is equipped with a centralized control unit valve group, which has an external power interface. Power is provided by other hydraulic power equipment, eliminating the need for its own oil pump, oil pump motor, and other power equipment, thus significantly reducing the size of the entire support equipment.

10. A support method using the straddle-type multi-frame combined temporary support equipment as described in any one of claims 6 to 9, characterized in that, Includes the following steps: S1. Equipment layout: The first, second, and third temporary support frames straddle the top of the tunneling machine; the fourth temporary support frame straddles the top of the turning scraper conveyor; and the last temporary support frame straddles the top of the bolt drilling rig. S2. The tunneling machine performs coal cutting operations to form an open roof. After the coal cutting is completed, the tunneling machine retreats to the first temporary support frame. S3. The first temporary support frame transitions from the supported state to the retracted state: S3-1, The lifting cylinder of the side beam lifting assembly retracts, thereby lowering the overall height of the top beam assembly and the side beam lifting assembly; S3-2, The side guard plate adjusting cylinders of the two side guard components are retracted to the appropriate position to retract the side guard plates; S4. The first temporary support frame starts the coal cleaning device and moves forward to the unsupported roof position; S5. The first temporary support frame is switched from the retracted state to the supported state, that is, the lifting cylinder and the side plate adjusting cylinder are extended to make the top beam and auxiliary beam support the top plate and the side plate support the two sides. S6. The secondary temporary support frame changes from the supported state to the retracted state and moves to the original support position of the first temporary support frame, and then changes from the retracted state to the supported state. S7. The third temporary support frame to the last temporary support frame are retracted one by one and moved forward to the original position of the previous support frame for support. S8. Under the cover of the five joint temporary support equipment, the anchor drilling rig performs permanent support, and the tunneling machine simultaneously performs the next cycle of coal cutting operation. Each single straddle-type temporary support frame repeats the above steps S1~S7.

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