A self-propelled hydraulic invert trestle working surface width adjustment device

Abstract

The present invention discloses a self-propelled hydraulic invert trestle working surface width adjustment device, including a support frame. A support rod member is fixedly installed at the longitudinal end of the support frame. Above the support rod member, there is a trestle mechanism, and the trestle mechanism includes a first trestle board and a second trestle board. In the present invention, the output end of the motor drives the first threaded rod to rotate, and the first threaded rod drives the second threaded rod to rotate synchronously through a transmission mechanism. The rotation of the first threaded rod and the second threaded rod drives the movement of the first trestle board and the second trestle board. Under the action of different threaded sections on the first threaded rod and the second threaded rod, the first trestle board and the second trestle board will have relative movement, causing the width between the first trestle board and the second trestle board to change, thereby realizing the width adjustment of the self-propelled hydraulic invert trestle and improving the applicable range of the self-propelled hydraulic invert trestle.

Description

Technical Field

[0001] The invention relates to the technical field of a self-propelled hydraulic inverted arch trestle, in particular to a self-propelled hydraulic inverted arch trestle working surface width adjustment device. Background Art

[0002] During tunnel construction, the arc at the bottom of the excavated section is called an invert. During the construction of the tunnel invert, an invert trestle must be built on the invert excavation surface to connect the excavation surface at the front end of the tunnel with the filling surface channel at the rear end of the tunnel. The filling surface is the term for concrete construction of the invert. The existence of the invert trestle ensures that the transportation of slag out of the tunnel excavation and materials into the cave will not be affected by the construction of the invert, ensuring that the invert concrete construction and tunnel excavation are carried out continuously and simultaneously.

[0003] Most of the existing self-propelled hydraulic inverted arch trestles are equipped with a multifunctional automatic walking device, a front bracket, a rear transverse movement mechanism, and a hydraulic self-balancing system. They can realize automatic longitudinal movement, lifting and lowering, and automatic transverse movement. They have a high degree of automation and can adapt to various construction conditions.

[0004] However, the existing self-propelled hydraulic inverted arch trestle still has shortcomings when in use. The existing self-propelled hydraulic inverted arch trestle lacks a working surface width adjustment device. Since the trestle mechanism serving as the working surface is mostly fixedly connected to the support rods on the support frame, the self-propelled hydraulic inverted arch trestle cannot adjust the width of the working surface according to demand, thereby reducing the use effect of the self-propelled hydraulic inverted arch trestle. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the self-propelled hydraulic inverted arch trestle cannot complete the width adjustment, and to propose a self-propelled hydraulic inverted arch trestle working surface width adjustment device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A self-propelled hydraulic inverted arch trestle working surface width adjustment device comprises a support frame, a support rod is fixedly installed on the longitudinal end of the support frame, a trestle mechanism is arranged above the support rod, the trestle mechanism comprises a first trestle board and a second trestle board, a sliding sleeve slidably connected to the support rod is fixedly installed at the bottom of the first trestle board and the second trestle board, a first threaded rod and a second threaded rod are respectively penetrated by the longitudinal ends of the first trestle board and the second trestle board, two groups of threaded sections are arranged on the outer walls of the first threaded rod and the second threaded rod, and the textures of the two groups of threaded sections are opposite, a motor is fixedly installed on the outer wall of the support frame, the output end of the motor is rotatably connected to the first threaded rod, and the first threaded rod and the second threaded rod are transmission connected through a transmission mechanism.

[0008] As a further description of the above technical solution:

[0009] Both the outer walls of the first threaded rod and the second threaded rod are sleeved with support sleeves, and a fixing rod fixedly connected to the support frame is welded to the bottom of the support sleeve. A positioning convex block is elastically connected to the inner cavity of the support sleeve through a spring.

[0010] As a further description of the above technical solution:

[0011] A linkage mechanism is arranged between the first trestle board and the second trestle board. The linkage mechanism includes a second connecting rod and two first connecting rods rotatably connected to both ends of the second connecting rod, and the two first connecting rods are respectively rotatably connected to the first trestle board and the second trestle board.

[0012] As a further description of the above technical solution:

[0013] A dust-proof cover is fixedly installed on the outer wall of the motor.

[0014] As a further description of the above technical solution:

[0015] One end of the first threaded rod far from the motor is rotatably connected to the support frame, and both sides of the longitudinal end of the second threaded rod are rotatably connected to the support frame.

[0016] As a further description of the above technical solution:

[0017] Both the spring and the positioning convex block are provided in multiple groups, and the multiple groups of springs and positioning convex blocks are distributed in a ring shape.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the spring is in close fit with the support sleeve.

[0020] As a further description of the above technical solution:

[0021] The linkage mechanism is in a Z-shaped structure, and the second connecting rod is horizontally arranged.

[0022] To sum up, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In the present invention, the rotation of the first threaded rod is driven by the output end of the motor, and the first threaded rod drives the second threaded rod to rotate synchronously through the transmission mechanism. The rotation of the first threaded rod and the second threaded rod drives the movement of the first trestle board and the second trestle board. Under the action of different threaded segments on the first threaded rod and the second threaded rod, the first trestle board and the second trestle board will have relative movement, so that the width between the first trestle board and the second trestle board changes, thereby realizing the width adjustment of the self-propelled hydraulic invert trestle and improving the applicable range of the self-propelled hydraulic invert trestle.

[0024] 2. In the present invention, when the first threaded rod and the second threaded rod are stressed and deflected, the positioning convex block will squeeze the spring in the inner cavity of the support sleeve, and the spring will, under the action of its own elastic potential energy, support the first threaded rod and the second threaded rod in the reverse direction through the positioning convex block, increasing the fatigue resistance of the first threaded rod and the second threaded rod, avoiding the deformation of the first threaded rod and the second threaded rod due to long-term stress, and further affecting the normal adjustment of the width of the trestle mechanism, thereby improving the service life of the self-propelled hydraulic invert trestle working surface width adjustment device.

[0025] 3. In the present invention, when the widths of the first trestle board and the second trestle board change, the linkage mechanism rotatably connected in the middle of the first trestle board and the second trestle board will move synchronously, and the first connecting rod and the second connecting rod will rotate relatively to ensure the parallel movement of the first trestle board and the second trestle board, thereby improving the adjustment accuracy of the self-propelled hydraulic invert trestle working surface width adjustment device.

[0026] 4. In the present invention, the dust-proof cover fixedly installed on the outer wall of the motor avoids the dust in the external environment from invading the motor and causing damage to the motor when the self-propelled hydraulic invert trestle working surface width adjustment device is working, thereby ensuring the stability of the use of the self-propelled hydraulic invert trestle working surface width adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall mechanism in the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the first threaded rod and the second threaded rod in the present invention;

[0029] Figure 3 is a schematic diagram of the structure of the support sleeve and the fixed rod in the present invention;

[0030] Figure 4 is a schematic diagram of the structure at position A in the present invention;

[0031] Figure 5 is a schematic diagram of the structure at position B in the present invention.

[0032] LEGEND DESCRIPTION:

[0033] 1. Support frame; 2. Support rod member; 3. Trestle mechanism; 301. First trestle board; 302. Second trestle board; 4. Fixed rod; 5. Sliding sleeve; 6. First threaded rod; 7. Support sleeve; 8. Second threaded rod; 9. Motor; 10. Dust-proof cover; 11. Transmission mechanism; 13. Spring; 14. Positioning convex block; 15. Linkage mechanism; 1501. First connecting rod; 1502. Second connecting rod. DETAILED DESCRIPTION OF THE INVENTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] See also Figures 1-5 A self-propelled hydraulic inverted arch trestle working surface width adjustment device comprises a support frame 1, a support rod 2 is fixedly installed at the longitudinal end of the support frame 1, a trestle mechanism 3 is arranged above the support rod 2, the trestle mechanism 3 comprises a first trestle board 301 and a second trestle board 302, the bottom of the first trestle board 301 and the second trestle board 302 are fixedly installed with a sliding sleeve 5 slidably connected to the support rod 2, the longitudinal ends of the first trestle board 301 and the second trestle board 302 are respectively penetrated with a first threaded rod 6 and a second threaded rod 8, the outer wall of the first threaded rod 6 and the second threaded rod 8 are both provided with two groups of threaded segments, and the textures of the two groups of threaded segments are opposite, a motor 9 is fixedly installed on the outer wall of the support frame 1, the output end of the motor 9 is rotatably connected to the first threaded rod 6, and the first threaded rod 6 is rotatably connected to the second threaded rod 8. A threaded rod 6 is connected to a second threaded rod 8 through a transmission mechanism 11, and a dust cover 10 is fixedly installed on the outer wall of the motor 9. The design of the dust cover 10 prevents dust from the external environment from invading the motor 9 and causing damage to the motor 9. The output end of the motor 9 drives the first threaded rod 6 to rotate, and the first threaded rod 6 drives the second threaded rod 8 to rotate synchronously through the transmission mechanism 11. Under the action of different thread segments on the first threaded rod 6 and the second threaded rod 8, the first trestle board 301 and the second trestle board 302 will move relative to each other, so that the width between the first trestle board 301 and the second trestle board 302 changes, thereby realizing the width adjustment of the self-propelled hydraulic inverted arch trestle and improving the application range of the self-propelled hydraulic inverted arch trestle.

[0037] The difference from the first embodiment is that:

[0038] Embodiment 2:

[0039] See also Figure 1 and Figure 4, support sleeves 7 are sleeved on the outer walls of the first threaded rod 6 and the second threaded rod 8, and fixing rods 4 fixedly connected to the support frame 1 are welded to the bottoms of the support sleeves 7. The inner cavity of the support sleeve 7 is elastically connected with positioning bumps 14 through springs 13. Multiple groups of springs 13 and positioning bumps 14 are provided, and the multiple groups of springs 13 and positioning bumps 14 are annularly distributed. The outer wall of the spring 13 is closely attached to the support sleeve 7. When the first threaded rod 6 and the second threaded rod 8 are stressed and deflected, the positioning bumps 14 will squeeze the springs 13 in the inner cavity of the support sleeve 7, and the springs 13 will reversely support the first threaded rod 6 and the second threaded rod 8 through the positioning bumps 14 under the action of their own elastic potential energy, increasing the fatigue resistance of the first threaded rod 6 and the second threaded rod 8 and preventing the first threaded rod 6 and the second threaded rod 8 from deforming due to long-term stress.

[0040] Different from Embodiment 1:

[0041] Embodiment 3:

[0042] Please refer to Figure 2 With Figure 5 , a linkage mechanism 15 is provided between the first trestle board 301 and the second trestle board 302. The linkage mechanism 15 includes a second connecting rod 1502 and two first connecting rods 1501 rotatably connected to both ends of the second connecting rod 1502. The two first connecting rods 1501 are respectively rotatably connected to the first trestle board 301 and the second trestle board 302. The linkage mechanism 15 is in a Z-shaped structure, and the second connecting rod 1502 is horizontally arranged. When the widths of the first trestle board 301 and the second trestle board 302 change, the linkage mechanism 15 rotatably connected in the middle of the first trestle board 301 and the second trestle board 302 will move synchronously, and the first connecting rod 1501 and the second connecting rod 1502 will rotate relative to each other to ensure that the first trestle board 301 and the second trestle board 302 move parallelly, thereby improving the adjustment accuracy of the self-propelled hydraulic invert trestle working surface width adjustment device.

[0043] Working principle: When in use, the output end of the motor 9 drives the first threaded rod 6 to rotate, and the first threaded rod 6 drives the second threaded rod 8 to rotate synchronously through the transmission mechanism 11. The rotation of the first threaded rod 6 and the second threaded rod 8 drives the first trestle board 301 and the second trestle board 302 to move through the external threads. Under the action of different threaded sections on the first threaded rod 6 and the second threaded rod 8, the first trestle board 301 and the second trestle board 302 will have relative movement, causing the width between the first trestle board 301 and the second trestle board 302 to change, thereby realizing the width adjustment of the self-propelled hydraulic invert trestle and improving the applicable range of the self-propelled hydraulic invert trestle. When the first threaded rod 6 and the second threaded rod 8 are stressed and deviate, the positioning convex block 14 will squeeze the spring 13 in the inner cavity of the support sleeve 7, and the spring 13 will reversely support the first threaded rod 6 and the second threaded rod 8 through the positioning convex block 14 under the action of its own elastic potential energy, increasing the fatigue resistance of the first threaded rod 6 and the second threaded rod 8, avoiding deformation of the first threaded rod 6 and the second threaded rod 8 due to long-term stress, and further affecting the normal adjustment of the width of the trestle mechanism 3, thereby improving the service life of the width adjustment device for the working surface of the self-propelled hydraulic invert trestle. When the widths of the first trestle board 301 and the second trestle board 302 change, the linkage mechanism 15 rotatably connected in the middle of the first trestle board 301 and the second trestle board 302 will move synchronously, and the first connecting rod 1501 and the second connecting rod 1502 will have relative rotation to ensure the parallel movement of the first trestle board 301 and the second trestle board 302, thereby improving the accuracy of the adjustment of the width adjustment device for the working surface of the self-propelled hydraulic invert trestle. The dust-proof cover 10 fixedly installed on the outer surface of the motor 9 prevents dust in the external environment from invading the motor 9 and causing damage to the motor 9 when the width adjustment device for the working surface of the self-propelled hydraulic invert trestle is working, thereby ensuring the stability of the use of the width adjustment device for the working surface of the self-propelled hydraulic invert trestle.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A self-propelled hydraulic invert trestle working surface width adjusting device, including a support frame (1), characterized in that, A support rod (2) is fixedly installed on the longitudinal end of the support frame (1), and a trestle mechanism (3) is arranged above the support rod (2). The trestle mechanism (3) includes a first trestle board (301) and a second trestle board (302). The bottoms of the first trestle board (301) and the second trestle board (302) are fixedly installed with sliding sleeves (5) slidably connected to the support rod (2). The longitudinal ends of the first trestle board (301) and the second trestle board (302) are respectively penetrated by a first threaded rod (6) and a second threaded rod (8). The outer walls of the first threaded rod (6) and the second threaded rod (8) are provided with two groups of threaded sections, and the textures of the two groups of threaded sections are opposite. A motor (9) is fixedly installed on the outer wall of the support frame (1), and the output end of the motor (9) is rotatably connected to the first threaded rod (6), and the first threaded rod (6) and the second threaded rod (8) are transmission-connected via a transmission mechanism (11). The outer walls of the first threaded rod (6) and the second threaded rod (8) are both sleeved with a support sleeve (7), and a fixing rod (4) fixedly connected to the support frame (1) is welded to the bottom of the support sleeve (7), and the inner cavity of the support sleeve (7) is elastically connected to a positioning protrusion (14) through a spring (13), and the spring (13) and the positioning protrusion (14) are both provided in multiple groups, and the multiple groups of springs (13) and positioning protrusions (14) are distributed in a ring shape.

2. The width adjustment device for the working surface of a self-propelled hydraulic invert trestle according to claim 1, characterized in that, A linkage mechanism (15) is provided between the first trestle board (301) and the second trestle board (302), and the linkage mechanism (15) comprises a second connecting rod (1502) and two first connecting rods (1501) rotatably connected at both ends of the second connecting rod (1502), and the two first connecting rods (1501) are rotatably connected to the first trestle board (301) and the second trestle board (302) respectively.

3. The width adjustment device for the working surface of a self-propelled hydraulic invert trestle according to claim 1, characterized in that, A dust cover (10) is fixedly mounted on the outer wall of the motor (9).

4. A self-propelled hydraulic invert trestle working surface width adjusting device according to claim 1, characterized in that, One end of the first threaded rod (6) away from the motor (9) is rotatably connected to the support frame (1), and both sides of the longitudinal end of the second threaded rod (8) are rotatably connected to the support frame (1).

5. A self-propelled hydraulic invert trestle working surface width adjusting device according to claim 1, characterized in that The outer wall of the spring (13) is tightly fitted to the support sleeve (7).

6. The width adjustment device for the working surface of a self-propelled hydraulic invert trestle according to claim 2, characterized in that, The linkage mechanism (15) is in a Z-shaped structure, and the second connecting rod (1502) is arranged horizontally.

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