Telescopic device and tunnel construction equipment

Abstract

The utility model discloses a telescopic device and tunnel construction equipment, and the telescopic device comprises a telescopic assembly which comprises a main arm, a second telescopic arm and one or more secondary telescopic arms; the driving mechanism is respectively connected with the main arm and the second telescopic arm and is used for driving the second telescopic arm to move along the axial direction relative to the main arm; the linkage mechanism comprises extension linkage rotating parts which are respectively arranged on the main arm and all stages of telescopic arms except for the last stage, and retraction linkage rotating parts which are respectively arranged on the main arm and all stages of telescopic arms except for the last stage; the retraction traction pieces are connected to the telescopic arms from the third stage to the last stage respectively, the extension traction pieces are arranged on the telescopic arms from the third stage to the last stage respectively, and the extension linkage rotating piece bypasses the extension linkage rotating piece of the upper-stage telescopic arm to be connected with the upper-stage telescopic arm. And the retraction traction piece bypasses the retraction linkage rotating piece of the upper-stage telescopic arm and is connected with the upper-stage telescopic arm. The number of telescopic oil cylinders in the multi-stage boom is reduced, and the dead weight of the boom is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, in particular to a telescopic device. In addition, the utility model also relates to a tunnel construction equipment comprising the telescopic device. Background Art

[0002] The anchoring technology of the arch anchor trolley is widely used in tunnel surrounding rock support, slope anchoring, underground cavern reinforcement, structure anti-overturning, dam foundation rock anti-sliding and reinforcement, maintenance and other aspects in various engineering fields such as railways, tunnels, bridges, water conservancy and hydropower, mining and metallurgy, civil and industrial buildings.

[0003] Tunnel construction equipment such as the telescopic boom of the arch anchor trolley in the prior art relies on cylinders to complete the telescopic action of the boom. However, there are some disadvantages when the multi-stage boom uses cylinders for telescopic operations. First, there are many boom stages, so more cylinders are required, which increases the weight of the boom itself and also increases the product cost and assembly difficulty. Second, due to space limitations, it is inconvenient to arrange multiple cylinders, and the working environment of tunnel construction equipment is harsh. Cylinders arranged outside the boom are prone to bumping against rocks or being damaged by falling rocks, resulting in poor safety performance, affecting the working efficiency of the equipment, and increasing repair and maintenance costs. Utility Model Content

[0004] The utility model provides a telescopic device and tunnel construction equipment to solve the technical problems of high cost, difficult deployment and easy damage caused by the large number of oil cylinders used in the existing arch anchor trolley with multi-stage telescopic arms.

[0005] According to one aspect of the utility model, a telescopic device is provided, comprising:

[0006] A telescopic assembly, including a main arm, a second telescopic arm, and one or more secondary telescopic arms;

[0007] A driving mechanism, connected to the main arm and the second telescopic arm, respectively, and used for driving the second telescopic arm to move axially relative to the main arm;

[0008] The linkage mechanism includes an extension linkage rotating member respectively arranged on the main arm and each level of telescopic arms other than the last level and a retraction linkage rotating member respectively arranged on the main arm and each level of telescopic arms other than the last level, and also includes a retraction traction member respectively connected to the telescopic arms from the third level to the last level and an extension traction member respectively arranged on the telescopic arms from the third level to the last level, the extension linkage rotating member bypasses the extension linkage rotating member of the upper telescopic arm to be connected to the upper second telescopic arm, and the retraction traction member bypasses the retraction linkage rotating member of the upper telescopic arm to be connected to the upper second telescopic arm.

[0009] As a further improvement of the above technical solution, the retracting linkage rotating member is arranged at the head of the corresponding telescopic arm, and the extending linkage rotating member is arranged at the tail of the corresponding telescopic arm.

[0010] As a further improvement of the above technical solution, the extending linkage rotating member and the retracting linkage rotating member are both wheel structures.

[0011] As a further improvement of the above technical solution, the extending traction member is a chain structure or a rope structure; the retracting traction member is a chain structure or a rope structure.

[0012] As a further improvement of the above technical solution, the telescopic assembly includes a third telescopic arm, and the linkage mechanism includes a first extension chain, a first retraction chain, a first retraction pulley arranged at the head of the second telescopic arm, and a first extension pulley arranged at the tail of the second telescopic arm; one end of the first extension chain is connected to the third telescopic arm and bypasses the first extension pulley to be connected to the tail of the main arm; one end of the first retraction chain is connected to the third telescopic arm and bypasses the first retraction pulley to be connected to the head of the main arm.

[0013] As a further improvement of the above technical solution, the telescopic assembly also includes a fourth telescopic arm, and the linkage mechanism also includes a second extension chain, a second retraction chain, a second retraction pulley arranged at the head of the third telescopic arm, and a second extension pulley arranged at the tail of the third telescopic arm; one end of the second extension chain is connected to the fourth telescopic arm and bypasses the second extension pulley to be connected to the tail of the second telescopic arm; one end of the second retraction chain is connected to the fourth telescopic arm and bypasses the second retraction pulley to be connected to the head of the second telescopic arm.

[0014] As a further improvement of the above technical solution, the end of the extended traction member and / or the end of the retracted traction member is fixed with a fastening bolt.

[0015] As a further improvement of the above technical solution, the driving mechanism includes a telescopic cylinder, which includes a cylinder body and a piston rod. The cylinder body is fixedly connected to the main arm, and the free end of the piston rod is connected to the second telescopic arm. Alternatively, the cylinder body is fixedly connected to the second telescopic arm, and the free end of the piston rod is connected to the main arm.

[0016] As a further improvement of the above technical solution, the telescopic device also includes a mounting rail arranged along the telescopic direction of the telescopic assembly, which is used to be arranged between two adjacent telescopic arms.

[0017] According to another aspect of the utility model, a tunnel construction device is also provided, which includes the above-mentioned telescopic device.

[0018] The utility model has the following beneficial effects:

[0019] The driving mechanism drives the second telescopic arm of the telescopic assembly to move axially relative to the main arm and extend. When the second telescopic arm moves, the extension linkage rotating member on the second telescopic arm drives the extension traction member of the third telescopic arm to move, thereby pulling the third telescopic arm to extend synchronously. Similarly, the extension action of the upper telescopic arm of the secondary telescopic arm is that the extension linkage rotating member on the upper telescopic arm pulls the secondary telescopic arm to extend through the extension traction member to achieve linkage. When the driving mechanism drives the second telescopic arm of the telescopic assembly to move axially relative to the main arm and retract, the second telescopic arm moves and the retraction linkage rotating member on the second telescopic arm drives the The retraction traction member of the third-stage telescopic arm then pulls the third-stage telescopic arm to retract synchronously. Similarly, the retraction action of the upper-stage telescopic arm of the secondary telescopic arm is achieved by the retraction linkage rotating member on the upper-stage telescopic arm pulling the secondary telescopic arm to retract via the retraction traction member, thereby realizing linkage. The telescopic device realizes synchronous extension and retraction of multi-stage booms through the cooperation of a single-stage driving mechanism and a linkage mechanism, effectively improving the operating efficiency of the arch anchor trolley, and achieving a significant reduction in the number of telescopic cylinders in the multi-stage boom, thereby reducing the deadweight of the boom, and avoiding the difficulties in the layout of the cylinders and the problems of structural interference, with a more streamlined and compact structure.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0023] Figure 2 yes Figure 1 Partial structure diagram Figure 1 ;

[0024] Figure 3 yes Figure 1 Partial structure diagram Figure 2 .

[0025] Legend:

[0026] 1. Main arm 2. Second telescopic arm 3. Third telescopic arm 4. Fourth telescopic arm 5. Piston rod 6. Cylinder body 7. First retracting pulley 8. Second retracting pulley 9. Second retracting chain 10. Mounting guide rail 11. Second extending chain 12. First retracting chain 13. First extending chain 14. First fastening bolt 15. First extending pulley 16. Second extending pulley. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model; Figure 2 yes Figure 1 Partial structure diagram Figure 1 ; Figure 3 yes Figure 1 Partial structure diagram Figure 2 .

[0029] like Figures 1 to 3 As shown, the telescopic device of this embodiment includes:

[0030] A telescopic assembly, comprising a main arm 1, a second telescopic arm 2 and one or more secondary telescopic arms;

[0031] A driving mechanism, connected to the main arm 1 and the second telescopic arm 2, respectively, for driving the second telescopic arm 2 to move axially relative to the main arm 1;

[0032] The linkage mechanism includes extension linkage rotating parts respectively arranged on the main arm 1 and each level of telescopic arms other than the last level, and retraction linkage rotating parts respectively arranged on the main arm 1 and each level of telescopic arms other than the last level, and also includes retraction traction parts respectively connected to the telescopic arms from the third level to the last level, and extension traction parts respectively arranged on the telescopic arms from the third level to the last level. The extension linkage rotating part bypasses the extension linkage rotating part of the upper telescopic arm and is connected to the upper-level telescopic arm, and the retraction traction part bypasses the retraction linkage rotating part of the upper telescopic arm and is connected to the upper-level telescopic arm.

[0033] Among them, the extending linkage rotating member and the retracting linkage rotating member are both wheel structures; the extending traction member is a chain structure or a rope structure, and the retracting traction member is a chain structure or a rope structure, so that it has a traction function and realizes the reversal of the traction direction in cooperation with the extending linkage rotating member or the retracting linkage rotating member; in this embodiment, the driving mechanism takes the telescopic cylinder as an example, and in other embodiments it can also be pneumatically driven or electric driven; in this embodiment, the telescopic cylinder includes a cylinder body 6 and a piston rod 5, the cylinder body 6 is fixedly connected to the main arm 1, and the free end of the piston rod 5 is connected to the second telescopic arm 2, or, the cylinder body 6 is fixedly connected to the second telescopic arm 2, and the free end of the piston rod 5 is connected to the main arm 1.

[0034] Working principle of this telescopic device:

[0035] The driving mechanism drives the second telescopic arm 2 of the telescopic assembly to move axially and extend relative to the main arm 1. When the second telescopic arm 2 moves, the extension linkage rotating member on the second telescopic arm 2 drives the extension traction member of the third telescopic arm to move, thereby pulling the third telescopic arm to extend synchronously. Similarly, the extension action of the upper telescopic arm of the secondary telescopic arm is that the extension linkage rotating member on the upper telescopic arm pulls the secondary telescopic arm to extend via the extension traction member to achieve linkage; when the driving mechanism drives the second telescopic arm 2 of the telescopic assembly to move axially and retract relative to the main arm 1, the second telescopic arm 2 moves and the retraction linkage rotating member on the second telescopic arm 2 The retraction member drives the retraction traction member of the third-stage telescopic arm to move, and then pulls the third-stage telescopic arm to retract synchronously. Similarly, the retraction action of the upper-stage telescopic arm of the secondary telescopic arm is that the retraction linkage rotating member on the upper-stage telescopic arm pulls the secondary telescopic arm to retract via the retraction traction member to achieve linkage. The telescopic device realizes the synchronous extension and retraction of multi-stage booms through the cooperation of a single-stage driving mechanism and a linkage mechanism, effectively improving the operating efficiency of tunnel construction equipment, and greatly reducing the number of telescopic cylinders in the multi-stage boom, thereby reducing the deadweight of the boom, and avoiding the difficulties in the layout of the cylinders and the problems of structural interference, and the structure is more streamlined and compact.

[0036] In one embodiment, the retracting linkage rotating member is arranged at the head of the corresponding telescopic arm, and the extending linkage rotating member is arranged at the tail of the corresponding telescopic arm. When each level of telescopic arm moves, the extending linkage rotating member located at the tail thereof can drive the corresponding extending traction member to act on the previous level of telescopic arm to generate a traction effect and drive it to extend synchronously, and the same applies to the retracting action.

[0037] In one embodiment, the telescopic device takes a four-stage boom as an example, the telescopic assembly includes a third telescopic arm 3, and the linkage mechanism includes a first extension chain 13, a first retraction chain 12, a first retraction pulley 7 arranged at the head of the second telescopic arm 2, and a first extension pulley 15 arranged at the tail of the second telescopic arm 2; one end of the first extension chain 13 is connected to the third telescopic arm 3 and is connected to the tail of the main arm 1 by bypassing the first extension pulley 15; one end of the first retraction chain 12 is connected to the third telescopic arm 3 and is connected to the head of the main arm 1 by bypassing the first retraction pulley 7; the telescopic assembly also includes a fourth telescopic arm 4, and the linkage mechanism also includes a second extension chain 11, a second retraction chain 9, a second retraction pulley 8 arranged at the head of the third telescopic arm 3, and a second extension pulley 16 arranged at the tail of the third telescopic arm 3; one end of the second extension chain 11 is connected to the fourth telescopic arm 4 and is connected to the second extension pulley 16 by bypassing the second extension pulley 16 The tail of the retractable arm 2 is connected; one end of the second retraction chain 9 is connected to the fourth telescopic arm 4 and passes around the second retraction pulley 8 to be connected to the head of the second telescopic arm 2; the second telescopic arm 2 extends as the driving mechanism extends, and retracts as the driving mechanism retracts. When the second telescopic arm 2 is extended, the first extension pulley 15 arranged on the second telescopic arm 2 drives the first extension chain 13 to roll, thereby driving the third telescopic arm 3 to extend, and the extension length is the same; when the second telescopic arm 2 is retracted, the first retraction pulley 7 drives the first retraction chain 12 to roll and then drives the third telescopic arm 3 to retract, and the retraction length is the same; when the third telescopic arm 3 is extended, the second extension pulley 16 arranged on the third telescopic arm 3 drives the second extension chain 11 to roll, thereby driving the fourth telescopic arm 4 to extend, and the extension length is the same; when the second telescopic arm 2 is retracted, the second retraction pulley 8 drives the second retraction chain 9 to roll and then drives the fourth telescopic arm 4 to retract, and the retraction length is the same.

[0038] In one embodiment, the ends of the extended traction member and / or the ends of the retracted traction member are fixed with fastening bolts 14, that is, the two ends of the first extended chain 13, the two ends of the second extended chain 11, the two ends of the first retracted chain 12 and the two ends of the second retracted chain 9 are respectively fixed with fastening bolts 14.

[0039] In this embodiment, the telescopic device also includes a mounting guide rail 10 arranged along the telescopic direction of the telescopic assembly, which is used to be arranged between two adjacent telescopic arms to guide the movement direction thereof to avoid interference caused by the sinking of the oil cylinder.

[0040] In one embodiment, a tunnel construction device is also provided, which is applied with the above telescopic device.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A telescopic device, characterized in that: include: A telescopic assembly comprising a main arm (1), a second telescopic arm (2) and one or more secondary telescopic arms; a driving mechanism, respectively connected to the main arm (1) and the second telescopic arm (2), and used for driving the second telescopic arm (2) to move axially relative to the main arm (1); The linkage mechanism comprises an extension linkage rotating member respectively arranged on the main arm (1) and each level of telescopic arms other than the last level and a retraction linkage rotating member respectively arranged on the main arm (1) and each level of telescopic arms other than the last level, and also comprises a retraction traction member respectively connected to the telescopic arms from the third level to the last level and an extension traction member respectively arranged on the telescopic arms from the third level to the last level, wherein the extension linkage rotating member bypasses the extension linkage rotating member of the upper telescopic arm and is connected to the upper secondary telescopic arm, and the retraction traction member bypasses the retraction linkage rotating member of the upper telescopic arm and is connected to the upper secondary telescopic arm.

2. The telescopic device according to claim 1, characterized in that: The retracting linkage rotating member is arranged at the head of the corresponding telescopic arm, and the extending linkage rotating member is arranged at the tail of the corresponding telescopic arm.

3. The telescopic device according to claim 2, characterized in that: The extending linkage rotating member and the retracting linkage rotating member are both wheel structures.

4. The telescopic device according to claim 3, characterized in that: The extending traction member is a chain structure or a rope structure; the retracting traction member is a chain structure or a rope structure.

5. The telescopic device according to claim 4, characterized in that: The telescopic assembly comprises a third telescopic arm (3), and the linkage mechanism comprises a first extension chain (13), a first retraction chain (12), a first retraction pulley (7) arranged at the head of the second telescopic arm (2), and a first extension pulley (15) arranged at the tail of the second telescopic arm (2); one end of the first extension chain (13) is connected to the third telescopic arm (3) and bypasses the first extension pulley (15) to be connected to the tail of the main arm (1); one end of the first retraction chain (12) is connected to the third telescopic arm (3) and bypasses the first retraction pulley (7) to be connected to the head of the main arm (1).

6. The telescopic device according to claim 5, characterized in that: The telescopic assembly also includes a fourth telescopic arm (4), and the linkage mechanism also includes a second extension chain (11), a second retraction chain (9), a second retraction pulley (8) arranged at the head of the third telescopic arm (3), and a second extension pulley (16) arranged at the tail of the third telescopic arm (3); one end of the second extension chain (11) is connected to the fourth telescopic arm (4) and bypasses the second extension pulley (16) to be connected to the tail of the second telescopic arm (2); one end of the second retraction chain (9) is connected to the fourth telescopic arm (4) and bypasses the second retraction pulley (8) to be connected to the head of the second telescopic arm (2).

7. The telescopic device according to any one of claims 4 to 6, characterized in that: The end of the extended traction member and / or the end of the retracted traction member is provided with a fastening bolt (14) for fixing.

8. The telescopic device according to claim 1, characterized in that: The driving mechanism comprises a telescopic cylinder, which comprises a cylinder body (6) and a piston rod (5), wherein the cylinder body (6) is fixedly connected to the main arm (1), and the free end of the piston rod (5) is connected to the second telescopic arm (2); or, the cylinder body (6) is fixedly connected to the second telescopic arm (2), and the free end of the piston rod (5) is connected to the main arm (1).

9. The telescopic device according to claim 1, characterized in that: The telescopic device also includes a mounting guide rail (10) arranged along the telescopic direction of the telescopic assembly and used for being arranged between two adjacent telescopic arms.

10. A tunnel construction equipment, characterized in that: The telescopic device according to any one of claims 1 to 9 is used.

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