Multi-section gradually-changing lower opening pattern needle beam trolley

Abstract

The utility model belongs to the technical field of building construction equipment, particularly relates to a multi-section gradually-changing lower opening pattern needle beam trolley, and aims to solve the problems that an existing needle beam trolley is supported through a template assembly, but can only be used for a small-section tunnel, and the diameter of the needle beam trolley cannot be changed; in order to solve the problem that the pouring effect is affected due to the fact that the surrounding rock needs to be supported by formworks of different sizes when the surrounding rock is good or bad in the excavation process, for example, the same formwork is used, the following scheme is provided that the supporting device comprises a needle beam frame, a sliding frame and four supporting assemblies which are arranged in a tunnel, and the sliding frame is arranged on the needle beam frame in a sliding and sleeving mode; the four supporting assemblies are all arranged on the outer side of the sliding frame and used for supporting a tunnel. According to the utility model, the sliding frame is arranged on the needle beam frame, and the four supporting assemblies which correspond to each other in pairs are arranged on the sliding frame, so that the supporting device can be matched with different surrounding rocks for use, the subsequent pouring effect can be improved, the building quality can be improved, and the supporting device is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to a multi-section gradually changing lower opening pattern needle beam trolley. Background Art

[0002] At present, in the construction of concrete lining of tunnels in water conservancy and hydropower projects, a beamless frame full-section needle beam trolley is mostly used for full-circular section lining with a diameter of less than 3 meters. The template of the needle beam trolley is hinged by a double pin shaft, and its needle beam is mounted on the top template or the bottom template through multiple walking guide wheel groups and multiple left and right side supporting wheel groups. The side template cylinders and lateral support jacks are respectively supported on the templates on the same side, and the support jacks and support cylinders between the template and the needle beam are omitted.

[0003] After searching, the utility model with announcement number CN205225273U discloses a needle beam trolley, specifically a needle beam trolley suitable for small sections. The needle beam trolley includes a template assembly, a needle beam assembly, a supporting longitudinal beam, a template supporting jack, a template supporting frame and a winch. The winch provides driving force for the needle beam assembly and the template assembly. The needle beam assembly moves under the action of the winch. A track plate is fixed on the upper end of the needle beam assembly. The template assembly slides horizontally on the track plate through the walking guide wheel assembly, so that the needle beam assembly is evenly stressed and walks more steadily. The template supporting frame is connected to the template assembly through the template supporting jack and the supporting longitudinal beam in turn. The template supporting jack is used to drive the template supporting frame to move up and down, which is convenient for the needle beam trolley to remove and erect the mold, and the problem of assembling and walking of the needle beam trolley outside the tunnel is solved. In addition, the use of a single-ear jack seat not only reduces the manufacturing cost, but also improves the lining efficiency and shortens the working cycle.

[0004] The needle beam trolley also has the following disadvantages during use: it is supported by the template assembly during use, but can only be used for small-section tunnels, and its diameter cannot be changed. At the same time, the quality of the surrounding rock during excavation requires templates of different sizes for support. If the same template is used, the casting effect will be affected. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that in the prior art, a template assembly is used to support the tunnel, but the template assembly can only be used for tunnels with small cross-sections, and the diameter cannot be changed. At the same time, different sizes of templates are required for the quality of the surrounding rock during the excavation process. If the same template is used, the pouring effect is affected. A multi-section gradually opening pattern needle beam trolley is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multi-section gradually changing lower opening pattern needle beam trolley comprises a needle beam frame, a sliding frame and four support assemblies arranged in a tunnel, wherein the sliding frame sliding sleeve is arranged on the needle beam frame, and the four support assemblies are all arranged on the outer side of the sliding frame for supporting the tunnel;

[0008] Four first hydraulic cylinders, which are respectively arranged at the four corners of the bottom of the needle beam frame and are used to support the needle beam frame;

[0009] Four second hydraulic cylinders, which are respectively arranged at four corners of the bottom of the sliding frame and are used to support the sliding frame;

[0010] A moving mechanism, arranged on the needle beam frame and used in conjunction with the four second hydraulic cylinders and the four sliding frames, is used to drive the support assembly to move;

[0011] The four support assemblies are opposed to each other in pairs, with the outer ends being larger and the inner ends being smaller, and are used for supporting surrounding rocks of different qualities.

[0012] In a possible design, the support assembly includes a first template, two second templates, two third templates and two flip templates, two top templates are fixedly provided on the top of the sliding frame, the output ends of the two top templates are fixedly provided at the bottom of the first template, the two second templates are rotatably provided at both ends of the first template, a side template is rotatably provided between the second template and the sliding frame, the third template is rotatably provided at the other end of the second template, the output end of the side template is rotatably provided with a bottom template cylinder, the output end of the bottom template cylinder is rotatably connected to the third template, the flip mold is rotatably provided at the other end of the third template, and the two flip molds are clamped together.

[0013] In a possible design, connecting rods are inserted between the second template, the third template and the sliding frame to further limit their positions.

[0014] In a possible design, a plurality of heightening blocks which are sequentially connected are inserted into the top of the sliding frame, and the top of the heightening block at the top is in contact with the first template to support the first template.

[0015] In one possible design, the moving mechanism includes a winch fixedly mounted on the top of the needle beam frame, a first pulley is fixedly mounted on one end of the sliding frame, a first steel wire rope is fixedly mounted on the needle beam frame, one end of the first steel wire rope passes around the first pulley and is fixedly connected to a winding roller on the winch, a second pulley is fixedly mounted on the other end of the sliding frame, a guide wheel is fixedly mounted on the top of the needle beam frame, a second steel wire rope is fixedly mounted on the top of the needle beam frame, the other end of the second steel wire rope passes around the second pulley and the guide wheel and is fixedly mounted on the winding roller on the winch.

[0016] In a possible design, two bearing platforms corresponding to the support assembly are fixedly provided on both sides of the sliding frame for bearing staff.

[0017] In the present application, when in use, the needle beam frame is moved into the tunnel. When support is required, according to the surrounding rock conditions, the winch is started to drive the sliding frame to move on the needle beam frame until the appropriate support assembly moves to the support position, and then the top mold cylinder, the side mold cylinder and the bottom mold cylinder are started to respectively drive the first mold plate to move upward, the second mold plates on both sides to move outward, and the third mold plate below to move downward. After moving into place, the two flip molds are opened, and the second mold plate, the third mold plate and the sliding frame are respectively connected together by connecting rods, and finally the heightening block is inserted between the first mold plate and the sliding frame;

[0018] When it is necessary to move forward, the second hydraulic cylinder is started to extend and the first hydraulic cylinder is started to retract, so that the needle beam frame can be suspended in the sliding frame, and then the winch is started to rotate, the first steel wire rope on the first pulley is wound up, and the second steel wire rope on the guide wheel and the second pulley is unwound, which can drive the sliding frame to move forward. When the sliding frame moves into place, the first hydraulic cylinder is started to extend and the second hydraulic cylinder is started to retract, and then the winch is started to rotate in the opposite direction, which can drive the sliding frame to move on the needle beam frame, so that it can move continuously.

[0019] In the utility model, the multi-section gradually changing lower opening pattern needle beam trolley can be used for different surrounding rock qualities by setting four support assemblies so that they can be used in pairs, thereby improving the pouring support effect;

[0020] In the utility model, the multi-section gradually changing lower opening pattern needle beam trolley is slidably arranged on the needle beam frame, and then used in conjunction with the second hydraulic cylinder, the first hydraulic cylinder and the winch, so that it can move continuously and move more stably;

[0021] In the utility model, by arranging the sliding frame on the needle beam frame, and arranging four supporting assemblies corresponding to each other on the sliding frame, it can be used in combination with different surrounding rocks of different quality, which can improve the subsequent pouring effect, improve the building quality, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a multi-section gradually changing lower opening pattern needle beam trolley proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the walking frame and guard plate structure of a multi-section gradually changing lower opening pattern needle beam trolley proposed by the utility model;

[0024] Figure 3 for Figure 2Another structural diagram of the form;

[0025] Figure 4 for Figure 3 Schematic diagram of another morphological structure.

[0026] In the figure: 1. needle beam frame; 2. first hydraulic cylinder; 3. sliding frame; 4. support assembly; 5. second hydraulic cylinder; 6. first pulley; 7. second pulley; 8. guide wheel; 9. winch; 10. top mold cylinder; 11. first mold; 12. heightening block; 13. second mold; 14. side mold cylinder; 15. bottom mold cylinder; 16. third mold; 17. flip mold; 18. bearing platform; 19. connecting rod; 20. first steel wire rope; 21. second steel wire rope. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1

[0029] Reference Figure 1-Figure 4 A multi-section needle beam trolley with a gradually changing lower opening pattern is used in the field of construction equipment, comprising: a needle beam frame 1, a sliding frame 3 and four supporting assemblies 4 arranged in a tunnel, the sliding frame 3 is slidingly sleeved on the needle beam frame 1, and the four supporting assemblies 4 are all arranged on the outer side of the sliding frame 3 for supporting the tunnel;

[0030] Four first hydraulic cylinders 2, which are respectively arranged at the four corners of the bottom of the needle beam frame 1, and are used to support the needle beam frame 1;

[0031] Four second hydraulic cylinders 5, which are respectively arranged at four corners of the bottom of the sliding frame 3, and are used to support the sliding frame 3;

[0032] A moving mechanism, arranged on the needle beam frame 1 and used in conjunction with four second hydraulic cylinders 5 and four sliding frames 3, is used to drive the support assembly 4 to move;

[0033] The four support assemblies 4 are opposite to each other in pairs, and the outer ends are large and the inner ends are small, and are used to support surrounding rocks of different qualities. By setting the sliding frame 3 on the needle beam frame 1 and driving the needle beam frame 1 and the sliding frame 3 to move relative to each other through the moving mechanism, it is convenient to adjust the positions of the four support assemblies 4, so that it is convenient to support different surrounding rocks, which can effectively improve the later pouring effect. For example, when the tunnel is formed by a shield machine and the excavation radius is the same diameter, when the surrounding rock is the best, the diameter of the second lining is 7.22 meters, and the thickness of the second lining lake concrete is 290 mm; when the surrounding When the surrounding rock is good, the diameter of the second lining is 66.92 meters and the thickness of the second lining concrete is 440mm; when the surrounding rock is not good, the diameter of the second lining is 56.52 meters and the thickness of the second lining concrete is 640mm; the three diameters produce two gradients: 7.22 meters to 6.92 meters and 6.92 meters to 6.52 meters; and because the directions of the large and small heads are different, four types of templates are produced: the first type is 7.22 meters to 6.92 meters, the second type is 6.92 meters to 7.22 meters, the third type is 6.92 meters to 6.52 meters, and the fourth type is 6.52 meters to 6.92 meters.

[0034] The support assembly 4 includes a first template 11, two second templates 13, two third templates 16 and two flip molds 17. Two top mold oil cylinders 10 are fixedly arranged on the top of the sliding frame 3. The output ends of the two top mold oil cylinders 10 are fixedly arranged at the bottom of the first template 11. The two second templates 13 are respectively rotatably arranged at both ends of the first template 11. A side mold oil cylinder 14 is rotatably arranged between the second template 13 and the sliding frame 3. The third template 16 is rotatably arranged at the other end of the second template 13. The output end of the side mold oil cylinder 14 is rotatably arranged with a bottom mold. The mold cylinder 15 and the output end of the bottom mold cylinder 15 are rotatably connected to the third mold plate 16, and the flip mold 17 is rotatably arranged at the other end of the third mold plate 16. The two flip molds 17 are clamped together, and by starting the top mold cylinder 10 to retract, the first mold plate 11 can be driven to move downward. At the same time, starting the side mold cylinder 14 and the bottom mold cylinder 15 to retract can respectively drive the second mold plate 13 and the third mold plate 16 to approach each other for demoulding, and at the same time, the two flip molds 17 are released from the connection, and the flip mold 17 is rotated to move the two flip molds 17 away and store them.

[0035] The moving mechanism includes a winch 9 fixedly arranged on the top of the needle beam frame 1, a first pulley 6 is fixedly arranged at one end of the sliding frame 3, a first steel wire rope 20 is fixedly arranged on the needle beam frame 1, one end of the first steel wire rope 20 passes around the first pulley 6 and is fixedly connected to the winding roller on the winch 9, a second pulley 7 is fixedly arranged on the other end of the sliding frame 3, a guide wheel 8 is fixedly arranged on the top of the needle beam frame 1, a second steel wire rope 21 is fixedly arranged on the top of the needle beam frame 1, and the other end of the second steel wire rope 21 passes around the second pulley 7 and The guide wheel 8 is fixedly wound on the winding roller on the winch 9. By starting the winch 9, the first steel wire rope 20 can be wound and the second steel wire rope 21 can be unwound. When the winch 9 is started to rotate in the opposite direction, the first steel wire rope 20 can be unwound and the second steel wire rope 21 can be wound, thereby driving the sliding frame 3 and the needle beam frame 1 to move relative to each other and adjusting the position of the support assembly 4. The winch 9 adopts the winch in patent document CN205225273U.

[0036] Example 2

[0037] refer to Figure 2-Figure 4 , improved on the basis of Example 1: connecting rods 19 are inserted between the second template 13, the third template 16 and the sliding frame 3 to further limit their positions. By inserting the connecting rods 19 between the second template 13, the third template 16 and the sliding frame 3, they can be further limited to avoid the contraction of the side template cylinder 14 and the bottom template cylinder 15, which affects the casting effect.

[0038] A plurality of heightening blocks 12 which are spliced ​​in sequence are inserted into the top of the sliding frame 3. The top of the heightening block 12 at the top is in conflict with the first template 11 and is used to support the first template 11. The setting of a plurality of heightening blocks 12 can further support the first template 11 and facilitate splicing. It can be spliced ​​by plugging in and placing it left and right and front and back.

[0039] Two bearing platforms 18 corresponding to the support assembly 4 are fixedly provided on both sides of the sliding frame 3 for carrying the staff. By setting two bearing platforms 18 corresponding to the support assembly 4 on both sides of the sliding frame 3, it is convenient for the staff to stand on the bearing platforms 18 to disassemble and assemble the connecting rod 19 without the need for additional raising tools.

[0040] However, as is well known to those skilled in the art, the working principle and wiring method of the winch 9 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-section gradually changing lower opening pattern needle beam trolley, comprising a needle beam frame (1), a sliding frame (3) and four supporting assemblies (4) arranged in a tunnel, characterized in that: The sliding frame (3) is slidably sleeved on the needle beam frame (1), and the four support assemblies (4) are all arranged on the outside of the sliding frame (3) for supporting the tunnel; Four first hydraulic cylinders (2), the four first hydraulic cylinders (2) being respectively arranged at the four corners of the bottom of the needle beam frame (1) and used for supporting the needle beam frame (1); Four second hydraulic cylinders (5), the four second hydraulic cylinders (5) being respectively arranged at four corners of the bottom of the sliding frame (3) and used for supporting the sliding frame (3); A moving mechanism, arranged on the needle beam frame (1) and used in conjunction with the four second hydraulic cylinders (5) and the four sliding frames (3), is used to drive the support assembly (4) to move; The four support assemblies (4) are arranged opposite to each other in pairs, with the outer ends being larger and the inner ends being smaller, and are used for supporting surrounding rocks of different qualities.

2. The multi-section gradually changing lower opening pattern needle beam trolley according to claim 1, characterized in that: The support assembly (4) comprises a first template (11), two second templates (13), two third templates (16) and two flip molds (17). Two top mold cylinders (10) are fixedly arranged on the top of the sliding frame (3). The output ends of the two top mold cylinders (10) are fixedly arranged on the bottom of the first template (11). The two second templates (13) are rotatably arranged at the two ends of the first template (11). A side mold cylinder (14) is rotatably arranged between the second template (13) and the sliding frame (3). The third template (16) is rotatably arranged at the other end of the second template (13). A bottom mold cylinder (15) is rotatably arranged at the output end of the side mold cylinder (14). The output end of the bottom mold cylinder (15) is rotatably connected to the third template (16). The flip mold (17) is rotatably arranged at the other end of the third template (16). The two flip molds (17) are clamped together.

3. The multi-section gradually changing lower opening pattern needle beam trolley according to claim 2, characterized in that: Connecting rods (19) are inserted between the second template (13), the third template (16) and the sliding frame (3) to further limit their positions.

4. The multi-section gradually changing lower opening pattern needle beam trolley according to claim 2, characterized in that: A plurality of sequentially connected heightening blocks (12) are inserted at the top of the sliding frame (3); the top of the heightening block (12) at the top contacts the first template (11) and is used to support the first template (11).

5. The multi-section gradually changing lower opening pattern needle beam trolley according to claim 1, characterized in that: The moving mechanism comprises a winch (9) fixedly arranged on the top of the needle beam frame (1); a first pulley (6) is fixedly arranged on one end of the sliding frame (3); a first steel wire rope (20) is fixedly arranged on the needle beam frame (1); one end of the first steel wire rope (20) passes around the first pulley (6) and is fixedly connected to a winding roller on the winch (9); a second pulley (7) is fixedly arranged on the other end of the sliding frame (3); a guide wheel (8) is fixedly arranged on the top of the needle beam frame (1); a second steel wire rope (21) is fixedly arranged on the top of the needle beam frame (1); the other end of the second steel wire rope (21) passes around the second pulley (7) and the guide wheel (8) and is fixedly wound on the winding roller on the winch (9).

6. A multi-section gradually changing lower opening pattern needle beam trolley according to any one of claims 1 to 5, characterized in that: Two bearing platforms (18) corresponding to the support assembly (4) are fixedly provided on both sides of the sliding frame (3) for bearing staff.

Images