Safety supporting device for tunnel construction

Abstract

The utility model relates to the technical field of tunnel supporting, and discloses a safety supporting device for tunnel construction. A sliding rod is arranged in the supporting rod in a sliding manner; the supporting plate is arranged at the top of the sliding rod; the hydraulic rod is arranged at the bottom of the supporting plate, and the bottom is connected with the supporting rod; a fixing assembly is arranged on the outer side wall of the supporting rod and comprises a plurality of clamping grooves which are formed in the outer side wall of the sliding rod; the shell is arranged on the outer side wall of the supporting rod and communicates with the interior of the supporting rod. The spring is arranged in the shell; the clamping block is arranged in the shell and is connected with the spring; according to the supporting device, through the fixing assembly, the sliding rod can be directly pulled upwards when the height is adjusted, the clamping block and the clamping groove do not need to be operated, compared with an existing device, operation is simpler and more convenient, and meanwhile the situation that the assembly is lost is avoided. According to the supporting device, the sliding track of the clamping block in the shell can be limited through the arrangement of the blocking strip, and the clamping block is prevented from being separated from the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a tunnel construction safety support device. Background Art

[0002] A tunnel is a structure built underground, underwater or in a mountain to lay railways or build roads for motor vehicles to pass through. According to their location, they can be divided into three categories: mountain tunnels, underwater tunnels and urban tunnels. Soft rock formations refer to bedrock with extremely low strength and elastic modulus. The soft rock formations themselves have low strength, and the internal strength of the tunnel after excavation is low. From the perspective of the overall tunnel structure, the side rock walls play a certain load-bearing role on the top rock formation and are subject to greater downward pressure. Without the protection of the side rock walls, long-term construction may increase the risk of collapse.

[0003] Chinese Utility Model Publication Specification CN202220240394.8 discloses an anti-collapse support device for tunnel construction, which is designed to adjust the height of the support device. The principle is that a through hole is provided on the sliding column. When adjustment is required, it is only necessary to insert the clamping rod through the clamping hole into the inside of the through hole to fix the sliding column, thereby adjusting the height of the sliding column.

[0004] However, the existing device needs to manually insert the clamping rod into the clamping hole and the through hole when adjusting, and it takes multiple attempts to align the clamping hole and the through hole, which is inconvenient. In addition, the clamping rod is designed separately and is easy to lose. Therefore, a safety support device is designed to facilitate adjustment and prevent components from being lost. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a tunnel construction safety support device, which has the advantages of more convenient height adjustment and components not easily lost, solving the problem that the prior art devices are difficult to adjust and the clamping rods are easily lost during use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel construction safety support device, comprising: a support rod, a sliding rod is slidably arranged inside the support rod; a support plate is arranged at the top of the sliding rod; a hydraulic rod is arranged at the bottom of the support plate, and the bottom is connected to the support rod; a fixing component is arranged on the outer wall of the support rod, and the fixing component includes: a plurality of card slots, all of which are opened on the outer wall of the sliding rod; a shell is arranged on the outer wall of the support rod and communicated with the inside of the support rod; a spring is arranged inside the shell; a card block is arranged inside the shell and connected to the spring; a pull rod, one end of which passes through the outer wall of the shell and is connected to the card block.

[0009] In some embodiments, the outer side wall of the block is in contact with the inner side wall of the shell.

[0010] In some embodiments, the spring is disposed outside the pull rod.

[0011] In some embodiments, the fixing assembly further includes: a pull-twist device disposed at one end of the clamping block.

[0012] In some embodiments, the fixing assembly further includes: a baffle symmetrically arranged on the inner side wall of the shell.

[0013] In some embodiments, the fixing assembly further includes: a plurality of balls, all of which are disposed on the bottom inclined surface of the block.

[0014] In some embodiments, the inner side wall slope of the slot and the slope of the block have the same inclination angle.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a tunnel construction safety support device, which has the following beneficial effects:

[0017] 1. The support device, through the fixed components, allows the user to directly pull the slide bar upwards when adjusting the height, without operating the card block and the card slot. Compared with the existing device, the operation is simpler and more convenient, and there will be no component loss.

[0018] 2. The support device can limit the sliding track of the block inside the shell through the setting of the baffle bar to avoid separation from the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the connection between the hydraulic rod and the support rod of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the card block and the card slot engaging with each other in the utility model;

[0022] Figure 4 It is a schematic diagram of the structure inside the shell of the utility model;

[0023] Figure 5 This is a schematic structural diagram of the second viewing angle of the interior of the shell of the utility model.

[0024] In the figure: 11, support rod; 12, slide rod; 13, support plate; 14, hydraulic rod;

[0025] 2. Fixing assembly; 21. Slot; 22. Shell; 23. Spring; 24. Block; 25. Pull rod; 26. Pull and twist; 27. Stop bar; 28. Ball. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] Tunnel construction refers to the method of designing and constructing underground projects, including tunnel construction methods, tunnel construction technology, and tunnel construction management. Tunnel construction technology mainly studies the technical solutions and technical measures required to solve various construction methods of tunnel projects, construction methods for special geological and poor geological areas, blasting, lining, support, ventilation, dust prevention, gas prevention, and harmful gas prevention during tunnel construction, as well as the operation methods and operation technical standards and requirements for lighting, water, wind, and electricity, and the measurement and monitoring methods of surrounding rock changes, etc. Construction technology is to ensure the implementation of the selected construction method, and it is highly random. During the tunnel construction process, the soil layer in contact with the inner wall of the tunnel becomes loose due to squeezing. At this time, it is necessary to use an electric hydraulic jack to support the support plate against the top of the tunnel.

[0031] In the related art, a through hole is provided on the slide column. When adjustment is required, the slide column only needs to be fixed by inserting the clamping rod into the through hole through the clamping hole, thereby adjusting the height of the slide column. However, in the existing device, the clamping rod needs to be manually inserted into the clamping hole and the through hole when adjusting. It takes multiple attempts to align the clamping hole and the through hole, which is inconvenient. In addition, the clamping rod is designed separately and is easy to be lost.

[0032] In order to solve the problems in the related art to a certain extent, the embodiment of the present application provides a tunnel construction safety support device. When the support device needs to be installed, the support plate 13 is first placed on the top of the slide bar 12, and it is connected and fixed by bolts. When the slide bar 12 is dragged upward, the slide bar 12 is extended from the inside of the support bar 11. During the online movement, the card slot 21 squeezes the card block 24, so that the card block 24 is squeezed and retracted to the inside of the shell 22 and separated from the card slot 21. During the retraction process, the compression spring 23 is compressed until the card block 24 contacts the next card slot 21, and the spring 23 rebounds and pushes the card block 24 to engage with it. During the upward movement of the slide bar 12, the card block 24 repeats the above action until the support plate 13 contacts the top of the tunnel. At this time, the card block 24 is engaged and fixed with the card slot 21, and then the hydraulic rod 14 is installed in the middle of the two support bars 11, and the top is connected to the support plate 13 to support the support plate 13. When disassembly is required, it is only necessary to pull the pull knob 26 so that the pull rod 25 drives the clamping block 24 to disengage from the clamping slot 21 , thereby releasing the restriction on the slide bar 12 .

[0033] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0034] Combination Figure 1-Figure 5The embodiment of the present application provides a tunnel construction safety support device, including: a support rod 11, a sliding rod 12 is slidably arranged inside the support rod 11; a support plate 13 is arranged at the top of the sliding rod 12; a hydraulic rod 14 is arranged at the bottom of the support plate 13, and the bottom is connected to the support rod 11; a fixing component 2 is arranged on the outer wall of the support rod 11, and the fixing component 2 includes: a plurality of card slots 21 are arranged, all of which are opened on the outer wall of the sliding rod 12; a shell 22 is arranged on the outer wall of the support rod 11 and communicated with the inside of the support rod 11; a spring 23 is arranged inside the shell 22; a block 24 is arranged inside the shell 22 and connected to the spring 23; one end of a pull rod 25 passes through the outer wall of the shell 22 and is connected to the block 24.

[0035] Specifically, both ends of the spring 23 are fixedly connected to the inner wall of the housing 22 and the clamping block 24 by means of a clamping ring. The fixing method of the clamping ring belongs to the existing well-known technology and will not be elaborated in detail here.

[0036] When in use, when the height needs to be adjusted, the slide bar 12 is dragged upward to extend the slide bar 12 from the inside of the support bar 11. During the online movement, the card slot 21 squeezes the card block 24, so that the card block 24 is squeezed and retracted to the inside of the housing 22 and separated from the card slot 21. During the retraction process, the spring 23 is compressed until the card block 24 contacts the next card slot 21, and the spring 23 rebounds and pushes the card block 24 to engage with it. During the upward movement of the slide bar 12, the card block 24 repeats the above action until the support plate 13 contacts the top of the tunnel, at which time the card block 24 is engaged and fixed with the card slot 21.

[0037] In some embodiments, the outer wall of the block 24 fits with the inner wall of the shell 22 .

[0038] When in use, the fitted arrangement can make the block 24 move more stably inside the housing 22 .

[0039] In some embodiments, the spring 23 is disposed on the outside of the pull rod 25 .

[0040] During use, this design allows the spring 23 to be restrained by the pull rod 25 when compressed and not bend, thereby extending the service life.

[0041] In some embodiments, the fixing assembly 2 further includes a pull-twist 26 disposed at one end of the clamping block 24 .

[0042] When in use, the arrangement of the pull knob 26 can facilitate gripping, making it easier to pull the pull rod 25 .

[0043] In some embodiments, the fixing assembly 2 further includes: a blocking bar 27 symmetrically arranged on the inner wall of the shell 22 .

[0044] When in use, the blocking bar 27 can prevent the block 24 from being separated from the inside of the housing 22 .

[0045] In some embodiments, the fixing assembly 2 further includes: a plurality of balls 28 are disposed on the bottom inclined surface of the block 24 .

[0046] When in use, the provision of the ball 28 can reduce the friction between the block 24 and the slot 21 .

[0047] In some embodiments, the inner wall slope of the slot 21 and the slope of the block 24 have the same inclination angle.

[0048] When in use, the same inclination setting can prevent the inclined surface of the block 24 from being scratched.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0050] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

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

Claims

1. A tunnel construction safety support device, comprising: A support rod (11), wherein a slide rod (12) is slidably arranged inside the support rod (11); A supporting plate (13) is arranged on the top of the sliding rod (12); A hydraulic rod (14) is arranged at the bottom of the support plate (13) and connected to the support rod (11) at the bottom; Features: The outer side wall of the support rod (11) is provided with a fixing assembly (2), and the fixing assembly (2) comprises: A plurality of card slots (21) are provided, all of which are opened on the outer side wall of the slide bar (12); A housing (22) is disposed on the outer wall of the support rod (11) and communicates with the interior of the support rod (11); A spring (23) is arranged inside the housing (22); A clamping block (24) is arranged inside the housing (22) and connected to the spring (23); A pull rod (25) has one end that penetrates the outer wall of the shell (22) and is connected to the clamping block (24).

2. A tunnel construction safety support device according to claim 1, characterized in that: The outer side wall of the block (24) is in contact with the inner side wall of the shell (22).

3. A tunnel construction safety support device according to claim 1, characterized in that: The spring (23) is arranged on the outside of the pull rod (25).

4. A tunnel construction safety support device according to claim 1, characterized in that: The fixing assembly (2) further comprises: The pull-twist (26) is arranged at one end of the clamping block (24).

5. A tunnel construction safety support device according to claim 1, characterized in that: The fixing assembly (2) further comprises: The blocking strips (27) are symmetrically arranged on the inner side wall of the shell (22).

6. A tunnel construction safety support device according to claim 1, characterized in that: The fixing assembly (2) further comprises: A plurality of balls (28) are provided, all of which are arranged on the bottom inclined surface of the clamping block (24).

7. A tunnel construction safety support device according to claim 1, characterized in that: The inner side wall slope of the clamping slot (21) and the slope of the clamping block (24) have the same inclination angle.

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