Lifting device for tunnel construction trolley

Abstract

The utility model discloses a lifting device for a tunnel construction trolley, which belongs to the technical field of lifting devices and comprises a mounting seat with mounting holes distributed in a rectangular shape at one end, a lifting oil cylinder is fixedly mounted in the middle of the upper end of the mounting seat, and a construction platform is fixedly mounted at the output end of the lifting oil cylinder. Circular pipes distributed in a rectangular shape are fixedly installed at the upper end of the installation base, lifting rods are inserted into the circular pipes, one ends of the lifting rods are rotationally connected with the construction platform, buffer springs capable of moving up and down are installed on the outer sides of the circular pipes through driving assemblies, reinforcing assemblies are installed on the two sides of the upper end of the installation base, and one ends of the reinforcing assemblies are connected with the construction platform. When the lifting oil cylinder breaks down, the construction platform is buffered through the buffer spring, the construction platform is prevented from rapidly descending to damage constructors, meanwhile, the lifting rod is supported by inflating the elastic air bag, and therefore the construction platform is further supported, and the safety performance of the construction platform is improved.

Description

Technical Field

[0001] The utility model specifically relates to a lifting device for a tunnel construction trolley, belonging to the technical field of lifting devices. Background Art

[0002] A tunnel is an engineering structure buried in the ground and is a form of human utilization of underground space. When carrying out construction in a tunnel, a tunnel construction trolley is required. When carrying out construction at higher positions in the tunnel, due to the limited height of the construction workers, they need to use the lifting device on the tunnel construction trolley to reach the construction site.

[0003] As shown in the announcement number: CN219366052U, an automatic lifting device for a tunnel construction trolley includes a driving wheel assembly, a steering wheel assembly, a frame assembly, a lifting assembly, a movable platform assembly, and a construction platform assembly. The steering wheel assembly and the driving wheel assembly are respectively arranged at the front and rear ends of the bottom of the frame assembly for steering and driving. The lifting assembly includes several components, which are respectively arranged on the frame assembly for lifting the frame assembly. The construction platform assembly is arranged on the top of the frame assembly. The movable platforms include two components, which are respectively arranged on both sides of the frame assembly and rise and fall with the lifting assembly. The utility model makes travel more convenient and faster by providing the driving wheel assembly and the steering wheel assembly. The construction platform is equipped with a safety railing and can be raised or lowered according to the requirements of the operator, achieving energy conservation and environmental protection, greater safety, and greatly improving work efficiency.

[0004] The common lifting device for tunnel construction trolleys can adjust the height of the construction platform and improve work efficiency. However, the existing lifting device is relatively unstable and has low safety. When the lifting cylinder fails, it will pose a danger to the construction workers. Utility Model Content

[0005] The purpose of the utility model is to provide a lifting device for a tunnel construction trolley in order to improve the safety of the lifting device in view of the shortcomings of the existing technology.

[0006] The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.

[0007] Furthermore, in order to enable the annular plate to move up and down, the driving assembly includes an annular plate with an internal thread on the inner side, an external thread is provided on the outer side of one end of the circular tube, and the annular plate is threadedly connected to the circular tube.

[0008] Furthermore, in order to facilitate the rotation of the annular plate, round rods are installed in a circular array on the outer side of the annular plate, and four round rods are provided.

[0009] Furthermore, in order to enable the buffer spring to move, one end of the buffer spring is rotatably connected to the annular plate through a plane bearing, the inner end of the plane bearing is fixedly installed in the annular plate, and one end of the buffer spring is fixedly connected to the outer end of the plane bearing.

[0010] Furthermore, in order to enable the piston to move up and down, the reinforcement assembly includes a cylinder, one end of the cylinder is fixedly mounted on both sides of the upper end of the mounting seat, a piston is slidably mounted inside the cylinder, a push rod is inserted into one end of the cylinder, one end of the push rod is fixedly connected to the piston, and the other end of the push rod is fixedly connected to the construction platform, the piston can move up and down inside the cylinder, and the push rod is used to change the position of the piston.

[0011] Furthermore, in order to ensure the smooth movement of the piston, an air outlet is provided on one side of the lower end of the cylinder.

[0012] Furthermore, in order to support the lifting rod, an elastic airbag is fixedly installed at the lower end of the circular tube, and an air pipe is fixedly installed on one side of the upper end of the cylinder. One end of the air pipe is connected to the interior of the cylinder, and the other end of the air pipe is connected to the elastic airbag. The air pipe is used to inflate or deflate the elastic airbag.

[0013] Furthermore, in order to control the circulation of the gas pipeline, a pipe valve is fixedly installed at one end of the gas pipeline, and the pipe valve is an existing structure.

[0014] The technical effects and advantages of the utility model are as follows: When the utility model is in use, when the lifting cylinder fails, the buffer spring can buffer the construction platform to prevent the construction platform from falling rapidly and causing damage to the construction workers. At the same time, the lifting rod is supported by inflating the elastic airbag, thereby further supporting the construction platform and improving its safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the round tube and the lifting rod of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the drive assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of a circular tube of the present utility model;

[0019] Figure 5 This is a schematic diagram of the reinforcement component structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the cylinder of the present utility model.

[0021] In the figure: 1. Mounting seat; 2. Lifting cylinder; 3. Construction platform; 4. Round pipe; 5. Lifting rod; 6. Drive assembly; 601. Ring plate; 602. External thread; 603. Round rod; 7. Buffer spring; 8. Reinforcement assembly; 801. Cylinder; 802. Piston; 803. Push rod; 804. Air outlet; 805. Elastic airbag; 806. Air pipe; 807. Pipe valve. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1-6 As shown, a lifting device for a tunnel construction trolley comprises a mounting base 1 with mounting holes arranged in a rectangular pattern at one end, a lifting cylinder 2 is fixedly mounted at the middle position of the upper end of the mounting base 1, a construction platform 3 is fixedly mounted at the output end of the lifting cylinder 2, a round tube 4 arranged in a rectangular pattern is fixedly mounted on the upper end of the mounting base 1, a lifting rod 5 is inserted into the inside of the round tube 4, one end of the lifting rod 5 is rotatably connected to the construction platform 3, a buffer spring 7 which can move up and down is installed on the outside of the round tube 4 through a driving assembly 6, one end of the buffer spring 7 is fixedly connected to the construction platform 3, reinforcement assemblies 8 are installed on both sides of the upper end of the mounting base 1, and one end of the reinforcement assembly 8 is connected to the construction platform 3. When in use, the mounting base 1 is first fixedly mounted on the tunnel construction trolley by bolts, and when it is necessary to adjust the height When construction is carried out, the lifting cylinder 2 is started to move the construction platform 3 upward. After the construction platform 3 is moved to the construction position, the lifting cylinder 2 is closed, and then construction is carried out on the construction platform 3. At this time, the lifting rod 5 moves upward in the circular tube 4, limiting the construction platform 3. The buffer spring 7 moves upward accordingly to support the construction platform 3. The height of the lower end of the buffer spring 7 can be adjusted by the driving component 6 according to the position of the construction platform 3, and the buffering strength of the buffer spring 7 can be adjusted to improve the buffering performance. When the lifting cylinder 2 fails, the buffer spring 7 can buffer the construction platform 3 to prevent the construction platform 3 from falling rapidly and causing damage to the construction personnel. At the same time, the construction platform 3 is further buffered and supported by the reinforcement component 8 to improve safety performance.

[0024] The driving assembly 6 includes an annular plate 601 with an internal thread on the inner side, and an external thread 602 is provided on the outer side of one end of the circular tube 4. The annular plate 601 is threadedly connected to the circular tube 4, and round rods 603 are installed in a circular array on the outer side of the annular plate 601. One end of the buffer spring 7 is rotatably connected to the annular plate 601 through a plane bearing. During use, when the position of the lower end of the buffer spring 7 needs to be adjusted, since the internal thread and the external thread 602 are engaged, the round rod 603 is manually rotated first to drive the annular plate 601 to move upward on the outside of the circular tube 4, and the lower end of the buffer spring 7 is moved to a suitable position according to the rising height of the construction platform 3, so as to adjust its buffering strength.

[0025] The reinforcement component 8 includes a cylinder 801, one end of the cylinder 801 is fixedly mounted on both sides of the upper end of the mounting seat 1, a piston 802 is slidably mounted inside the cylinder 801, a push rod 803 is plugged into one end of the cylinder 801, one end of the push rod 803 is fixedly connected to the piston 802, and the other end of the push rod 803 is fixedly connected to the construction platform 3, an air outlet 804 is provided on one side of the lower end of the cylinder 801, an elastic air bag 805 is fixedly mounted on the lower end of the circular tube 4, an air pipe 806 is fixedly mounted on one side of the upper end of the cylinder 801, one end of the air pipe 806 is connected to the inside of the cylinder 801, and the other end of the air pipe 806 is connected to the elastic air bag 805, and a pipe valve 807 is fixedly mounted on one end of the air pipe 806. When in use, the pipe valve 807 is manually opened first to put the air pipe 806 in flow. In the open state, when the construction platform 3 moves upward, the push rod 803 is driven to move upward, and the piston 802 moves upward accordingly, and the air inside the cylinder 801 is transported to the elastic airbag 805 through the air pipe 806. The elastic airbag 805 then moves upward inside the circular tube 4 to support the lifting rod 5, thereby supporting the construction platform 3 and improving safety performance. When an accident occurs, the elastic airbag 805 can support the lifting rod 5 to prevent it from moving downward quickly. When the construction platform 3 moves to the specified position, the pipe valve 807 is closed. After the construction is completed, the pipe valve 807 is opened, the lifting cylinder 2 is started, and the construction platform 3 is reset. At this time, the piston 802 moves downward accordingly, and the air in the elastic airbag 805 is transported to the cylinder 801 through the air pipe 806, and the elastic airbag 805 is reset.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A lifting device for a tunnel construction trolley, comprising a mounting base (1) with rectangular mounting holes at one end, a lifting cylinder (2) fixedly mounted at the middle position of the upper end of the mounting base (1), and a construction platform (3) fixedly mounted at the output end of the lifting cylinder (2), characterized in that: A circular tube (4) with a rectangular distribution is fixedly installed on the upper end of the mounting seat (1), a lifting rod (5) is inserted into the interior of the circular tube (4), one end of the lifting rod (5) is rotatably connected to the construction platform (3), a buffer spring (7) that can move up and down is installed on the outer side of the circular tube (4) through a driving component (6), one end of the buffer spring (7) is fixedly connected to the construction platform (3), and reinforcement components (8) are installed on both sides of the upper end of the mounting seat (1), and one end of the reinforcement component (8) is connected to the construction platform (3).

2. The lifting device for a tunnel construction trolley according to claim 1, characterized in that: The driving assembly (6) comprises an annular plate (601) with an internal thread provided on the inner side, an external thread (602) is provided on the outer side of one end of the circular tube (4), and the annular plate (601) is threadedly connected to the circular tube (4).

3. The lifting device for a tunnel construction trolley according to claim 2, characterized in that: Round rods (603) are installed in a circumferential array on the outer side of the annular plate (601).

4. The lifting device for a tunnel construction trolley according to claim 3, characterized in that: One end of the buffer spring (7) is rotatably connected to the annular plate (601) via a plane bearing.

5. The lifting device for a tunnel construction trolley according to claim 1, characterized in that: The reinforcement assembly (8) includes a cylinder (801), one end of which is fixedly mounted on both sides of the upper end of the mounting seat (1), a piston (802) is slidably mounted inside the cylinder (801), a push rod (803) is inserted into one end of the cylinder (801), one end of the push rod (803) is fixedly connected to the piston (802), and the other end of the push rod (803) is fixedly connected to the construction platform (3).

6. The lifting device for a tunnel construction trolley according to claim 5, characterized in that: An air outlet (804) is provided on one side of the lower end of the cylinder (801).

7. The lifting device for a tunnel construction trolley according to claim 6, characterized in that: An elastic airbag (805) is fixedly installed at the lower end of the circular tube (4), and an air delivery pipe (806) is fixedly installed on one side of the upper end of the cylinder (801). One end of the air delivery pipe (806) is connected to the interior of the cylinder (801), and the other end of the air delivery pipe (806) is connected to the elastic airbag (805).

8. The lifting device for a tunnel construction trolley according to claim 7, characterized in that: A pipe valve (807) is fixedly installed at one end of the gas transmission pipe (806).

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