Tunnel lining supporting device and trolley thereof

Abstract

The utility model relates to the technical field of tunnel lining supporting devices, in particular to a tunnel lining supporting device and a trolley thereof, which comprises a plurality of arc-shaped supporting plates, and the arc-shaped supporting plates are connected in an end-to-end abutting mode and form an unclosed circular ring structure. The arc-shaped support plate comprises an outer arc-shaped plate and two inner rib plates fixed on the inner arc surface of the outer arc-shaped plate, and the outer arc-shaped plate is matched with the two inner rib plates to form an arc-shaped groove; the middle frame is arranged in the non-closed circular ring structure; the two ends of the telescopic cylinder are connected with the arc-shaped supporting plate and the middle frame respectively; the force balancing mechanism is arranged at the communicating position of the two arc-shaped grooves; and a liner plate. According to the utility model, the force balancing mechanism is matched with the lining plate, so that the abutting positions (weak links) of the two arc-shaped supporting plates can be fixedly connected together, and therefore, the whole unclosed circular ring structure can form a supporting and bearing whole body, and the supporting effect on the tunnel lining is greatly enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lining support devices, in particular to a tunnel lining support device and a trolley thereof. Background Art

[0002] Lining support is the use of stone blocks, concrete, or reinforced concrete to build "walls" of a certain thickness inside the underground chamber to "passively" bear the load, thereby reinforcing the surrounding rock and ensuring the stability of the underground chamber. Depending on the reinforcement needs, lining support can be semi-lining, lining with side walls, or full lining. The lining thickness must be estimated based on the rock pressure or the rock strength coefficient (such as the f-value). In actual projects, the geological characteristics of the surrounding rock, the size of the project section, and the requirements of the use conditions should be comprehensively considered to select the appropriate support type and parameters.

[0003] Current lining support devices mostly use multiple arc-shaped support plates to assemble into an open circular structure to achieve support operations. However, since the open circular structure is formed by assembling multiple arc-shaped support plates, the connection position of two adjacent arc-shaped support plates becomes the weak link in the load-bearing of the entire support device, and its load-bearing performance is poor, which affects the support effect of the entire support device. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel lining support device and a trolley thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tunnel lining support device, comprising:

[0006] Arc-shaped support plates, wherein a plurality of said arc-shaped support plates are connected in an end-to-end abutment manner to form an open circular ring structure, said arc-shaped support plates comprising an outer arc plate and two inner ribs fixed to the inner arc surface of said outer arc plate, said outer arc plate cooperates with the two inner ribs to form an arc groove;

[0007] An intermediate frame is arranged inside the non-closed annular structure;

[0008] a telescopic cylinder, the two ends of which are respectively connected to the arc-shaped support plate and the intermediate frame;

[0009] a balancing mechanism, arranged at the connecting position of the two arc-shaped slots; and

[0010] Lining plates, one end of each of the two lining plates is fixed to the inner surface of one of the two connected arc-shaped grooves, and the other end of each of the two lining plates extends into the other of the two connected arc-shaped grooves;

[0011] Wherein, the force balancing mechanism includes a driving component and two clamping columns driven by the driving component. When the two clamping columns are separated from each other to a maximum distance, the two abutting arc-shaped support plates are fixedly connected.

[0012] Preferably, the driving component includes a motor, a gear coaxially fixed to the output shaft of the motor, and two racks meshing with the gear and respectively arranged on both sides of the gear;

[0013] The motor is fixedly arranged between the other ends of the two lining plates;

[0014] The clamping columns are respectively connected to the two racks.

[0015] Preferably, a fixing cylinder is fixed to one end of the rack connected to the clamping column, and a compression spring is fixed inside the fixing cylinder;

[0016] The clamping column includes a solid column and a hollow column that are fixedly connected;

[0017] One end of the compression spring extends from one end of the fixing cylinder and passes through the hollow column to be fixedly connected to the solid column;

[0018] One end of the fixing tube is located inside the hollow column, and the outer diameter of the fixing tube is smaller than the inner diameter of the hollow column.

[0019] Preferably, the two lining plates are respectively arranged against the two inner ribs;

[0020] When the two clamping columns are spaced apart from each other to a maximum distance, the solid column penetrates the lining plate and the inner rib plate to be abutted.

[0021] Preferably, a second through hole is provided on the lining plate, and a first through hole is provided on the inner rib plate. When the two clamping columns are away from each other to a maximum distance, the solid column passes through the first through hole and the second through hole.

[0022] Preferably, the motor is mounted on a mounting base, and the mounting base is fixedly connected to the other ends of the two lining plates.

[0023] Preferably, the mounting seat is fixedly connected to the other ends of the two lining plates via a T-shaped rod;

[0024] The rack is slidably connected to the T-bar via a slide rail.

[0025] A trolley comprises the above-mentioned tunnel lining support device.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The utility model can fix the abutting positions (weak links) of the two arc-shaped support plates together through the balance mechanism and the lining plate, so that the entire non-closed annular structure can be formed into a supporting load-bearing whole, which greatly enhances the supporting effect on the tunnel lining.

[0028] 2. The utility model provides a fixed cylinder, a compression spring, a solid column and a hollow column. On the one hand, since the outer diameter of the fixed cylinder is smaller than the inner diameter of the hollow column, a circular gap is left between the fixed cylinder and the hollow column. Therefore, when the lining plate and the inner rib plate are squeezed by the tunnel lining and the solid column is squeezed between the lining plate and the inner rib plate, since the fixed cylinder and the hollow column are only connected by the compression spring, the squeezing force of the lining plate and the inner rib plate on the solid column will not be transmitted to the fixed cylinder and the rack, ensuring that the rack and the gear can maintain a stable meshing state for a long time, thereby extending the service life of the balance mechanism; on the other hand, since only the solid column part of the clamping column passes through the lining plate and the inner rib plate, it has a strong load-bearing capacity and will not bend or deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0031] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0032] Figure 4 It is a schematic diagram of a partial side cross-sectional structure of the utility model;

[0033] Figure 5 For this utility model Figure 4 The enlarged structural diagram at B in the middle;

[0034] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged cross-section at point C in the middle.

[0035] In the figure: 1. Arc support plate; 11. Outer arc plate; 12. Inner rib plate; 121. First through hole; 2. Intermediate frame; 3. Telescopic cylinder; 4. Balance mechanism; 41. Motor; 42. Gear; 43. Rack; 44. Snap-on column; 441. Solid column; 442. Hollow column; 45. Fixing cylinder; 46. Compression spring; 47. T-bar; 48. Mounting seat; 49. Slide rail; 5. Lining plate; 51. Second through hole. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figures 1-6 , the utility model provides a technical solution:

[0038] A tunnel lining support device includes five parts: an arc-shaped support plate 1, an intermediate frame 2, a telescopic cylinder 3, a balance mechanism 4 and a lining plate 5. These five parts are described in detail below.

[0039] There are several arc-shaped support plates 1, and the specific number is not limited here. In some embodiments, the number of arc-shaped support plates 1 can be as follows: Figure 1 As shown in the figure, the four or more arc-shaped support plates 1 are connected by end-to-end contact to form an open circular ring structure. Figure 1 As shown, the arc-shaped support plate 1 includes an outer arc plate 11 and two inner ribs 12 fixed on the inner arc surface of the outer arc plate 11, and the inner ribs 12 are also arc-shaped, wherein the outer arc plate 11 and the inner ribs 12 are concentrically arranged, and the outer arc plate 11 cooperates with the two inner ribs 12 to form an arc groove. The arc-shaped support plate 1 is arranged to be a structure consisting of the outer arc plate 11 and the two inner ribs 12. On the basis of improving the structural strength and load-bearing capacity of the arc-shaped support plate 1, its overall weight can be reduced to achieve a lightweight design of the arc-shaped support plate 1.

[0040] The intermediate frame 2 is arranged inside the non-closed circular structure, and is mainly used for installing the telescopic cylinder 3 and for connecting and fixing with the trolley.

[0041] The telescopic cylinder 3 has two ends connected to the arc support plate 1 and the intermediate frame 2 respectively; the telescopic cylinder 3 can be an electric cylinder or a hydraulic cylinder, etc., which is not limited to the specific one. The main function of the telescopic cylinder 3 is to drive the arc support plate 1 to move through its own telescopic movement, so that the following can be formed: Figure 1 The non-closed circular structure shown is used to support the tunnel lining.

[0042] The balancing mechanism 4 is arranged at the connecting position of the two arc-shaped grooves, and is mainly used to cooperate with the lining plate 5 to fix the abutting positions of the two arc-shaped support plates 1 together. Specifically, the abutting positions of the two arc-shaped support plates 1 are the weak links in the load-bearing capacity of the entire open circular structure, and its supporting effect on the tunnel lining is relatively weak. The balancing mechanism 4 cooperates with the lining plate 5 to fix the abutting positions of the two arc-shaped support plates 1 together, so that the entire open circular structure can be formed into a whole, and its supporting effect on the tunnel lining is greatly enhanced.

[0043] As shown in the figure, one end of the two lining plates 5 is fixed on the inner surface of one of the two connected arc grooves, and the other ends of the two lining plates 5 extend into the other of the two connected arc grooves; wherein, the balance mechanism 4 includes a driving component and two clamping columns 44 driven by the driving component. When the two clamping columns 44 are away from each other to the maximum distance, the two abutting arc support plates 1 are fixedly connected; on the contrary, when the two clamping columns 44 are close to each other to the minimum distance, the two abutting arc support plates 1 are in an unfixed state. At this time, the abutting position of the two abutting arc support plates 1 is the weak link in the load-bearing capacity of the entire non-closed circular structure.

[0044] The driving component includes a motor 41, a gear 42 coaxially fixed to the output shaft of the motor 41, and two racks 43 meshing with the gear 42 and respectively arranged on both sides of the gear 42. Figure 5 As shown, when the motor 41 drives the gear 42 to rotate, since the two racks 43 are respectively engaged with the two sides of the gear 42, the two racks 43 will perform linear motion in opposite directions under the drive of the gear 42; the motor 41 is fixedly arranged between the other ends of the two lining plates 5. Specifically, the motor 41 is installed on the mounting seat 48, and the mounting seat 48 is fixedly connected to the other ends of the two lining plates 5. Furthermore, the mounting seat 48 is fixedly connected to the other ends of the two lining plates 5 through a T-bar 47, and the T-bar 47 is used to fix the other ends of the two lining plates 5 together; the rack 43 is slidably connected to the T-bar 47 through a slide rail 49. The setting of the slide rail 49 can realize the sliding connection between the rack 43 and the T-bar 47, thereby improving the stability of the rack 43 during the linear movement after being driven by the gear 42; the clamping column 44 is respectively connected to the two racks 43.

[0045] The specific connection between the clamping column 44 and the rack 43 is as follows:

[0046] A fixing cylinder 45 is fixed to one end of the rack 43 connected to the clamping column 44. A compression spring 46 is fixed inside the fixing cylinder 45. The clamping column 44 includes a solid column 441 and a hollow column 442 that are fixedly connected. One end of the compression spring 46 extends from one end of the fixing cylinder 45 and passes through the hollow column 442 to be fixedly connected to the solid column 441.

[0047] One end of the fixing cylinder 45 is located inside the hollow column 442 , and the outer diameter of the fixing cylinder 45 is smaller than the inner diameter of the hollow column 442 , that is, a circular gap is left between the fixing cylinder 45 and the hollow column 442 .

[0048] The two lining plates 5 are respectively arranged in contact with the two inner ribs 12; when the two clamping columns 44 are away from each other to the maximum distance, the solid column 441 passes through the lining plate 5 and the inner rib 12 that are to be abutted; further, a second through hole 51 is provided on the lining plate 5, and a first through hole 121 is provided on the inner rib 12. When the two clamping columns 44 are away from each other to the maximum distance, the solid column 441 passes through the first through hole 121 and the second through hole 51.

[0049] In the above scheme, by setting the fixed cylinder 45, compression spring 46, solid column 441 and hollow column 442, on the one hand, since the outer diameter of the fixed cylinder 45 is smaller than the inner diameter of the hollow column 442, a circular gap is left between the fixed cylinder 45 and the hollow column 442. Therefore, when the lining 5 and the inner rib 12 are squeezed by the tunnel lining and the solid column 441 is clamped between the lining 5 and the inner rib 12, since the fixed cylinder 45 and the hollow column 442 are only connected by the compression spring 46, the clamping force of the lining 5 and the inner rib 12 on the solid column 441 will not be transmitted to the fixed cylinder 45 and the rack 43, ensuring that the rack 43 and the gear 42 can maintain a stable meshing state for a long time, thereby extending the service life of the balancing mechanism 4; on the other hand, since only the solid column 441 part of the clamping column 44 passes through the lining 5 and the inner rib 12, it has a strong load-bearing capacity and will not bend or deform.

[0050] A trolley comprises the above-mentioned tunnel lining support device.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel lining support device, characterized in that: include: Arc-shaped support plates, wherein a plurality of said arc-shaped support plates are connected in an end-to-end abutment manner to form an open circular ring structure, said arc-shaped support plates comprising an outer arc plate and two inner ribs fixed to the inner arc surface of said outer arc plate, said outer arc plate cooperates with the two inner ribs to form an arc groove; An intermediate frame is arranged inside the non-closed annular structure; a telescopic cylinder, the two ends of which are respectively connected to the arc-shaped support plate and the intermediate frame; A force balancing mechanism is provided at the connecting position of the two arc-shaped slots; as well as Lining plates, one end of each of the two lining plates is fixed to the inner surface of one of the two connected arc-shaped grooves, and the other end of each of the two lining plates extends into the other of the two connected arc-shaped grooves; Wherein, the force balancing mechanism includes a driving component and two clamping columns driven by the driving component. When the two clamping columns are separated from each other to a maximum distance, the two abutting arc-shaped support plates are fixedly connected.

2. The tunnel lining support device according to claim 1, characterized in that: The driving component includes a motor, a gear coaxially fixed to the output shaft of the motor, and two racks meshing with the gear and respectively arranged on both sides of the gear; The motor is fixedly arranged between the other ends of the two lining plates; The clamping columns are respectively connected to the two racks.

3. The tunnel lining support device according to claim 2, characterized in that: A fixing cylinder is fixed to one end of the rack connected to the clamping column, and a compression spring is fixed inside the fixing cylinder; The clamping column includes a solid column and a hollow column that are fixedly connected; One end of the compression spring extends from one end of the fixing cylinder and passes through the hollow column to be fixedly connected to the solid column; One end of the fixing tube is located inside the hollow column, and the outer diameter of the fixing tube is smaller than the inner diameter of the hollow column.

4. The tunnel lining support device according to claim 3, characterized in that: The two lining plates are respectively arranged against the two inner rib plates; When the two clamping columns are spaced apart from each other to a maximum distance, the solid column penetrates the lining plate and the inner rib plate to be abutted.

5. The tunnel lining support device according to claim 4, characterized in that: A second through hole is provided on the lining plate, and a first through hole is provided on the inner rib plate. When the two clamping columns are spaced apart from each other to a maximum distance, the solid column passes through the first through hole and the second through hole.

6. The tunnel lining support device according to claim 2, characterized in that: The motor is mounted on a mounting base, and the mounting base is fixedly connected to the other ends of the two lining plates.

7. The tunnel lining support device according to claim 6, characterized in that: The mounting seat is fixedly connected to the other ends of the two lining plates via a T-shaped rod; The rack is slidably connected to the T-bar via a slide rail.

8. A trolley, characterized in that: The trolley includes the tunnel lining support device according to any one of claims 1 to 7.

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