Tunnel foundation pit side top integrated supporting device
By designing an integrated support device for the side and top of the tunnel foundation pit, and utilizing a drive rod and adjustment mechanism to achieve rapid deployment and retraction, the problem of slow construction speed and poor safety of traditional support devices is solved, thereby improving construction efficiency and safety, and supporting flexible conversion between temporary and permanent support.
Patent Information
- Application Number
- CN202511443625.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2025-11-21
AI Technical Summary
Traditional tunnel foundation pit support devices are slow to construct, difficult to dismantle temporary supports, and lack initial protection for permanent supports, which affects construction safety and efficiency.
An integrated side-top support device for tunnel foundation pits was designed, including a side support plate assembly, an arc-shaped support top plate, and a cross bracing platform. The device can be rapidly deployed and retracted by a drive rod-driven adjustment mechanism to adapt to different foundation pit sizes and can be converted into permanent support.
It improves construction efficiency and safety, allows for rapid completion of temporary support, easy dismantling and reuse, adapts to different foundation pit sizes, and is simple to operate when used as permanent support, resulting in high overall construction efficiency.
Smart Images
Figure CN120990652A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of supporting equipment, and particularly relates to a tunnel foundation pit side and top integrated supporting device. BACKGROUND
[0002] The tunnel foundation pit supporting device is a supporting, reinforcing and protecting measure for the tunnel foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the tunnel foundation pit, and has a great effect on preventing the tunnel foundation pit from collapsing.
[0003] According to different construction conditions, the tunnel foundation pit supporting device is generally divided into a temporary supporting device and a permanent supporting device, and the tunnel foundation pit is generally a cross section of a tunnel face, and the top has an arc-shaped vault. The traditional supporting device is assembled and welded by various structural members. Due to the existence of the arc-shaped vault, the assembly construction speed is slow, and when used as a temporary supporting device, the removal is very troublesome. When used as a permanent supporting device, the device has no protective effect before assembly, and the construction safety is difficult to guarantee, which greatly affects the overall construction progress.
[0004] Therefore, a supporting device that is convenient to move and can be quickly formed is needed to improve the construction safety and the overall construction efficiency. SUMMARY
[0005] The technical problem to be solved by the application is to overcome the defects of the prior art, and provide a tunnel foundation pit side and top integrated supporting device. The application can not only adapt to tunnel foundation pits of different sizes, but also quickly complete the supporting of the tunnel foundation pit side wall and the tunnel foundation pit top vault, effectively improve the construction efficiency, and has a protective effect whether expanded or contracted, so that the operating personnel are within the protection range of the device during any operation process, greatly improving the operation safety, and the device is simple and convenient to remove, and has high overall construction efficiency.
[0006] The technical scheme adopted to solve the above technical problem is: a tunnel foundation pit side and top integrated supporting device, comprising a side supporting plate assembly, an arc-shaped supporting top plate and a cross support platform, the side supporting plate assembly comprises a first side supporting plate and a second side supporting plate, the cross support platform is fixedly arranged between the first side supporting plate and the second side supporting plate, the arc-shaped supporting top plate is arranged above the side supporting plate assembly, a top supporting mechanism is arranged above the cross support platform, a first adjusting mechanism is arranged at the top of the cross support platform, a second adjusting mechanism is arranged at the bottom of the cross support platform, a through slot is arranged at the top of each of the first side supporting plate and the second side supporting plate, and the arc-shaped supporting top plate can be inserted into the through slot. A driving rod is slidably connected to the cross support platform. The driving rod can drive the first adjusting mechanism, and the first adjusting mechanism can drive the cross support platform to change the distance between the first side support plate and the second side support plate. The driving rod can drive the second adjusting mechanism, and the second adjusting mechanism can drive the roof support mechanism to change the height of the arc-shaped support roof.
[0007] According to the technical scheme, when support is needed, the device can be pushed into the middle of the position of the tunnel foundation pit that needs support, the driving rod drives the first adjusting mechanism to expand the distance between the first side support plate and the second side support plate, so that the first side support plate and the second side support plate are tightly attached to the side wall of the tunnel foundation pit, thereby completing the support of the side wall of the tunnel foundation pit; meanwhile, the driving rod drives the second adjusting mechanism to raise the height of the arc-shaped support roof, so that the arc-shaped support roof is attached to the arc-shaped vault of the top of the tunnel foundation pit, thereby completing the support of the top of the tunnel foundation pit. The device can quickly complete temporary support, and the operator operates below the device during the operation process, so that the entire operation process is within the protection range of the device, thereby greatly improving the operation safety. After the device is unfolded, the middle channel is not occupied, and other equipment can be transported in the tunnel foundation pit without being hindered, thereby effectively improving the construction efficiency. When the device needs to be removed as temporary support, the driving rod is operated in reverse to shrink the device, so that the removal is conveniently completed, and the device can be quickly unfolded again for reuse. When the device needs to be used as a permanent support device, anchor holes are arranged on the side support plate assembly and the arc-shaped support roof, anchor rods are punched into the anchor holes, and then the movable part on the device is welded to make the device a permanent support device, so that the operation is simple and convenient, and the overall construction efficiency is high.
[0008] Further, the first side support plate and the second side support plate are fixedly provided with sliding rails at the bottom, and universal wheels are slidably connected to the sliding rails.
[0009] According to the technical scheme, the first side support plate and the second side support plate are fixedly provided with sliding rails at the bottom, and universal wheels are slidably connected to the sliding rails, so that the device can be conveniently transported, and when the device is used as a permanent support device, groove steels are pre-buried on the ground on both sides of the sliding rails. When the first adjusting mechanism drives the cross support platform to expand the distance between the first side support plate and the second side support plate, the sliding rails enter the groove steels, and the universal wheels are ejected by the groove steels. The universal wheels can be conveniently disassembled, and the operation is simple.
[0010] Further, the cross support platform is fixedly connected with cross support sleeves at the front and rear ends, the cross support sleeves are slidably connected with cross support threaded rods, one end of the cross support sleeve is fixedly connected with the first side support plate, and one end of the cross support threaded rod is fixedly connected with the second side support plate.
[0011] According to the technical scheme, the cross support platform is fixedly connected with the cross support sleeve at both ends, the cross support sleeve is slidably connected with the cross support threaded rod, one end of the cross support sleeve is fixedly connected with the first side support plate, and one end of the cross support threaded rod is fixedly connected with the second side support plate, so that the sliding of the cross support threaded rod in the cross support sleeve can change the distance between the first side support plate and the second side support plate.
[0012] Further, the first adjusting mechanism comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is rotationally connected at the top of the cross support platform, the driven bevel gear is rotationally connected at the port of the cross support sleeve, the cross support threaded rod penetrates through the driven bevel gear, the cross support threaded rod is threadedly connected with the driven bevel gear, the driven bevel gear is engaged with the driving bevel gear, and the driving rod can drive the driving bevel gear to rotate.
[0013] According to the technical scheme, the driving bevel gear is rotationally connected at the top of the cross support platform, the driven bevel gear is rotationally connected at the port of the cross support sleeve, the cross support threaded rod penetrates through the driven bevel gear, the cross support threaded rod is threadedly connected with the driven bevel gear, the driven bevel gear is engaged with the driving bevel gear, and the driving rod can drive the driving bevel gear to rotate, so that when the driving rod drives the driving bevel gear to rotate, the driving bevel gear can drive the driven bevel gear to rotate, and then drive the cross support threaded rod to horizontally displace in the cross support sleeve, so as to change the distance between the first side support plate and the second side support plate. When the driving rod drives the driving bevel gear to rotate forward, the driven bevel gear rotates forward, the distance between the first side support plate and the second side support plate is expanded, when the driving rod drives the driving bevel gear to rotate reversely, the driven bevel gear rotates reversely, and the distance between the first side support plate and the second side support plate is reduced.
[0014] Further, the roof support mechanism comprises an arc-shaped roof support base, first roof support rods and second roof support assemblies, the arc-shaped roof support base is slidably connected above the cross support platform, a plurality of first roof support rods are hingedly connected at the middle of the top of the arc-shaped roof support base, a plurality of second roof support assemblies are symmetrically hingedly connected at both sides of the top of the arc-shaped roof support base, and the other ends of the first roof support rods are hingedly connected with the arc-shaped support top plate.
[0015] According to the technical scheme, the arc-shaped roof support base is slidably connected above the cross support platform, a plurality of first roof support rods are hingedly connected at the middle of the top of the arc-shaped roof support base, a plurality of second roof support assemblies are symmetrically hingedly connected at both sides of the top of the arc-shaped roof support base, and the other ends of the first roof support rods are hingedly connected with the arc-shaped support top plate, so that the lifting of the arc-shaped roof support base can drive the arc-shaped support top plate to change the height.
[0016] Furthermore, the second top support assembly includes a first threaded rod, an adjusting sleeve, and a second threaded rod. One end of the first threaded rod is hinged to the arc-shaped top support seat, and the other end of the first threaded rod is threaded to the bottom of the adjusting sleeve. One end of the second threaded rod is threaded to the top of the adjusting sleeve, and the other end of the second threaded rod is fixedly connected to an arc-shaped top plate, which fits against the arc-shaped support top plate.
[0017] Through the above technical solution, since one end of the first threaded rod is hinged to the arc-shaped top support seat, the other end of the first threaded rod is threaded to the bottom of the adjusting sleeve, one end of the second threaded rod is threaded to the top of the adjusting sleeve, and the other end of the second threaded rod is fixedly connected to an arc-shaped top plate, which fits against the arc-shaped support top plate, and the threads on the first and second threaded rods are opposite, rotating the adjusting sleeve can drive the first and second threaded rods to move closer or further apart, that is, to achieve adjustable length of the second top support assembly. When the adjusting sleeve rotates forward, the first and second threaded rods move further apart, and the second top support assembly extends. When the adjusting sleeve rotates in reverse, the first and second threaded rods move closer together, and the second top support assembly shortens, while the arc-shaped top plate fits against the arc-shaped support top plate. Thus, adjusting the length of the second top support assembly can make the arc-shaped support top plate fit completely against the arc-shaped arch of the tunnel foundation pit, thereby achieving support for the arc-shaped arch of the tunnel foundation pit.
[0018] Furthermore, the second adjustment mechanism includes an adjusting threaded rod, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The adjusting threaded rod is fixedly connected to the bottom of the arc-shaped top support, and the first and second synchronous pulleys are rotatably connected to the bottom of the cross support platform. The first and second synchronous pulleys are connected by a synchronous belt.
[0019] With the above technical solution, since the first synchronous wheel and the second synchronous wheel are rotatably connected to the bottom of the cross support platform, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt, the rotation of the second synchronous wheel can drive the rotation of the first synchronous wheel through the synchronous belt.
[0020] Furthermore, the adjusting threaded rod passes through the cross brace platform, passes through the first synchronous pulley, and is threadedly connected to the first synchronous pulley.
[0021] With the above technical solution, since the adjusting threaded rod passes through the cross brace platform and the first synchronous pulley, and the adjusting threaded rod is threadedly connected to the first synchronous pulley, the rotation of the first synchronous pulley can drive the adjusting threaded rod to rise and fall on the cross brace platform, that is, drive the arc-shaped top support seat to rise and fall. When the second synchronous pulley rotates forward, the second synchronous pulley drives the first synchronous pulley to rotate forward, and the first synchronous pulley rotates forward, driving the adjusting threaded rod to rise on the cross brace platform, that is, driving the arc-shaped top support seat to rise. When the second synchronous pulley rotates in reverse, the second synchronous pulley drives the first synchronous pulley to rotate in reverse, and the first synchronous pulley rotates in reverse, driving the adjusting threaded rod to fall on the cross brace platform, that is, driving the arc-shaped top support seat to fall.
[0022] Furthermore, a rectangular drive groove is provided in the middle of the drive bevel gear, and a rectangular drive groove is also provided in the middle of the second synchronous pulley. The drive rod includes a drive square rod, a connecting round rod, and a connector. The top of the drive square rod is fixedly connected to the connecting round rod, and the bottom of the connecting round rod is fixedly connected to the connector. The drive square rod can pass through the rectangular drive groove on the drive bevel gear and the second synchronous pulley, and the drive square rod slides in conjunction with the rectangular drive groove.
[0023] Through the above technical solution, since a rectangular drive groove is provided in the middle of the drive bevel gear and a rectangular drive groove is also provided in the middle of the second synchronous pulley, the drive rod includes a drive square rod, a connecting round rod and a connector. The top of the drive square rod is fixedly connected to the connecting round rod, and the bottom of the connecting round rod is fixedly connected to the connector. The drive square rod can pass through the rectangular drive groove on the drive bevel gear and the second synchronous pulley. The drive square rod and the rectangular drive groove are slidably engaged, so that the drive rod can be connected to a motor through the connector, and the motor can drive the drive rod to rotate. The slidable engagement between the drive square rod and the rectangular drive groove allows the drive square rod to simultaneously engage with the rectangular drive groove on the drive bevel gear and the second synchronous pulley. The drive square rod can also engage with the rectangular drive groove on the drive bevel gear alone, and the drive square rod can also engage with the rectangular drive groove on the second synchronous pulley alone. This enables the drive rod to simultaneously drive the first adjustment mechanism and the second adjustment mechanism, and the drive rod can also drive the first adjustment mechanism or the second adjustment mechanism alone.
[0024] The beneficial effects of this invention are as follows: (1) When support is required in this invention, this device can be pushed into the middle of the tunnel pit where support is required. The first adjustment mechanism is driven by the drive rod to widen the gap between the first side support plate and the second side support plate, so that the first side support plate and the second side support plate are in close contact with the side wall of the tunnel pit, thus completing the support of the side wall of the tunnel pit. At the same time, the drive rod also drives the second adjustment mechanism to raise the height of the arc-shaped support top plate. The arc-shaped support top plate is in close contact with the arc-shaped arch at the top of the tunnel pit, thus completing the support of the top of the tunnel pit, effectively improving construction efficiency. This invention can not only quickly complete temporary support, but the adjustable side support plate assembly and arc-shaped support top plate can adapt to tunnel pits of different sizes, making the application range of this invention wide. (2) When this device is used as a temporary support and needs to be dismantled, simply reverse the drive rod, reduce the distance between the first side support plate and the second side support plate, and lower the arc-shaped top support seat to drive the arc-shaped support top plate to lower, so that the device can be contracted and dismantled easily. It can also be quickly transported to the designated support position for secondary deployment and support. When this device is needed as a permanent support device, anchor holes are provided on both the side support plate assembly and the arc-shaped support top plate. Anchor rods are driven into the anchor holes, and then the movable parts on this device are welded to make this device a permanent support device. The operation is simple and convenient, and the overall construction efficiency is high. (3) In this invention, regardless of any operation, the operator operates under this device throughout the entire operation process. This device has a protective function whether it is unfolded or retracted, so that the operator is within the protection range of this device during any operation process, which greatly improves the safety of operation. After the device is unfolded, it does not occupy the middle passage and does not hinder the transportation of other equipment in the tunnel foundation pit, effectively improving the overall construction efficiency. Attached Figure Description
[0025] Figure 1 This is a first-view structural schematic diagram of an integrated side-top support device for a tunnel foundation pit according to the present invention. Figure 2 This is a second-view structural schematic diagram of an integrated side-top support device for a tunnel foundation pit according to the present invention. Figure 3 This is a schematic diagram of the structure of the side support plate assembly and the cross bracing platform of the integrated side support device for tunnel foundation pit of the present invention. Figure 4 This is an exploded structural diagram of the side support plate assembly and the cross bracing platform pipe of an integrated side-top support device for tunnel foundation pits according to the present invention. Figure 5 This is an exploded structural diagram of the first adjustment mechanism of an integrated side-top support device for tunnel foundation pits according to the present invention. Figure 6 This is a schematic diagram of the structure of the top support mechanism and the arc-shaped support top plate of the integrated side-top support device for tunnel foundation pit according to the present invention; Figure 7 This is a schematic diagram of the structure of the second top support component of an integrated side-top support device for tunnel foundation pits according to the present invention; Figure 8 This is an exploded structural diagram of the second top support component of an integrated side-top support device for tunnel foundation pits according to the present invention. Figure 9 This is a schematic diagram of the structure of the arc-shaped top support seat and the second adjustment mechanism of the integrated side-top support device for tunnel foundation pits according to the present invention. Figure 10 This is an exploded structural diagram of the arc-shaped top support seat and the second adjustment mechanism of an integrated side-top support device for tunnel foundation pits according to the present invention. Figure 11 This is a schematic diagram of the drive rod of an integrated side-top support device for tunnel foundation pits according to the present invention.
[0026] Reference numerals: 1. Side support plate assembly; 2. Arc-shaped support top plate; 3. Horizontal support platform; 4. Top support mechanism; 5. First adjustment mechanism; 6. Second adjustment mechanism; 7. Drive rod; 11. First side support plate; 12. Second side support plate; 13. Slide rail; 14. Universal wheel; 15. Through groove; 31. Horizontal support sleeve; 32. Horizontal support threaded rod; 41. Arc-shaped top support seat; 42. First top support rod; 43. Second top support assembly; 431. First threaded rod; 432. Adjusting sleeve; 433. Second threaded rod; 51. Drive bevel gear; 52. Driven bevel gear ring; 61. Adjusting threaded rod; 62. First synchronous pulley; 63. Second synchronous pulley; 64. Synchronous belt; 71. Drive square rod; 72. Connecting round rod; 73. Joint. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0028] like Figure 1 - Figure 3 As shown, an integrated side and top support device for a tunnel foundation pit includes a side support plate assembly 1, an arc-shaped support top plate 2, and a cross bracing platform 3. The side support plate assembly 1 includes a first side support plate 11 and a second side support plate 12. The cross bracing platform 3 is fixedly disposed between the first side support plate 11 and the second side support plate 12. The arc-shaped support top plate 2 is disposed above the side support plate assembly 1. A top support mechanism 4 is disposed above the cross bracing platform 3. A first adjustment mechanism 5 is disposed at the top of the cross bracing platform 3. A second adjustment mechanism 6 is disposed at the bottom of the cross bracing platform 3. The tops of the first side support plate 11 and the second side support plate 12 are both provided with through grooves 15. The arc-shaped support top plate 2 can be inserted into the through grooves 15 on both sides. A drive rod 7 is slidably connected to the cross brace platform 3; Drive rod 7 can drive first adjustment mechanism 5, and first adjustment mechanism 5 can drive cross brace platform 3 to change the distance between first side support plate 11 and second side support plate 12. The drive rod 7 can drive the second adjustment mechanism 6, and the second adjustment mechanism 6 can drive the top support mechanism 4 to change the height of the arc-shaped support top plate 2.
[0029] In this embodiment, when support is required, this device can be pushed into the middle of the tunnel pit where support is needed. The drive rod 7 drives the first adjustment mechanism 5 to widen the gap between the first side support plate 11 and the second side support plate 12, making them tightly adhere to the tunnel pit sidewall, thus completing the support of the tunnel pit sidewall. Simultaneously, the drive rod 7 also drives the second adjustment mechanism 6 to raise the height of the arc-shaped support top plate 2, so that the arc-shaped support top plate 2 fits against the arc-shaped arch at the top of the tunnel pit, completing the support of the tunnel pit top. This device can quickly complete temporary support. During operation, the operator works below the device. The entire operation is within the protection range of this device, greatly improving operational safety. After the device is deployed, it does not occupy the intermediate passage or hinder the transportation of other equipment in the tunnel foundation pit, effectively improving construction efficiency. When this device is used as a temporary support and needs to be dismantled, simply reverse the drive rod 7 to retract the device, which can be easily dismantled. It can also be quickly deployed and reused. When this device is needed as a permanent support device, anchor holes are provided on the side support plate assembly 1 and the arc-shaped support top plate 2. Anchor rods are driven into the anchor holes, and then the movable parts on this device are welded to make it a permanent support device. The operation is simple and convenient, and the overall construction efficiency is high.
[0030] like Figure 2 - Figure 5 As shown, the bottom of the first side support plate 11 and the second side support plate 12 are both fixedly provided with slide rails 13, and universal wheels 14 are slidably connected on the slide rails 13. The front and rear ends of the cross bracing platform 3 are fixedly connected to cross bracing sleeves 31. A cross bracing threaded rod 32 is slidably connected inside the cross bracing sleeve 31. One end of the cross bracing sleeve 31 is fixedly connected to the first side support plate 11, and one end of the cross bracing threaded rod 32 is fixedly connected to the second side support plate 12. The first adjustment mechanism 5 includes a drive bevel gear 51 and a driven bevel gear ring 52. The drive bevel gear 51 is rotatably connected to the top of the cross support platform 3, and the driven bevel gear ring 52 is rotatably connected to the port of the cross support sleeve 31. The cross support threaded rod 32 passes through the driven bevel gear ring 52 and is threadedly connected to the driven bevel gear ring 52. The driven bevel gear ring 52 meshes with the drive bevel gear 51, and the drive rod 7 can drive the drive bevel gear 51 to rotate. In this embodiment, when the drive rod 7 drives the drive bevel gear 51 to rotate, the drive bevel gear 51 can drive the driven bevel gear ring 52 to rotate, which in turn drives the cross brace threaded rod 32 to move horizontally within the cross brace sleeve 31, thereby changing the distance between the first side support plate 11 and the second side support plate 12. When the drive rod 7 drives the drive bevel gear 51 to rotate forward, the driven bevel gear ring 52 rotates forward, and the distance between the first side support plate 11 and the second side support plate 12 increases. When the drive rod 7 drives the drive bevel gear 51 to rotate in reverse, the driven bevel gear ring 52 rotates in reverse, and the distance between the first side support plate 11 and the second side support plate 12 decreases. The first side support plate 11 and the second side support plate 12 are in close contact with the tunnel pit sidewall, thus completing the support of the tunnel pit sidewall. The installation of casters 14 and slide rails 13 not only facilitates the transportation of the support device, but also facilitates the change of the distance between the first side support plate 11 and the second side support plate 12. When the support device is used as a permanent support device, channel steel can be pre-embedded in the ground on both sides of the slide rail 13. When the first adjustment mechanism 5 drives the cross brace platform 3 to expand the distance between the first side support plate 11 and the second side support plate 12, the slide rail 13 enters the channel steel, and the casters 14 are pushed out by the channel steel. The casters 14 can be easily disassembled, and the operation is simple.
[0031] like Figure 2 - Figure 10 As shown, the top support mechanism 4 includes an arc-shaped top support seat 41, a first top support rod 42, and a second top support assembly 43. The arc-shaped top support seat 41 is slidably connected above the cross support platform 3. Multiple first top support rods 42 are hinged to the middle of the top of the arc-shaped top support seat 41. Multiple second top support assemblies 43 are symmetrically hinged to the two sides of the top of the arc-shaped top support seat 41. The other end of the first top support rod 42 is hinged to the arc-shaped support top plate 2. The second top support assembly 43 includes a first threaded rod 431, an adjusting sleeve 432, and a second threaded rod 433. One end of the first threaded rod 431 is hinged to the arc-shaped top support seat 41, and the other end of the first threaded rod 431 is threaded to the bottom of the adjusting sleeve 432. One end of the second threaded rod 433 is threaded to the top of the adjusting sleeve 432, and the other end of the second threaded rod 433 is fixedly connected to an arc-shaped top plate, which fits against the arc-shaped support top plate 2. The second adjustment mechanism 6 includes an adjustment threaded rod 61, a first synchronous pulley 62, a second synchronous pulley 63, and a synchronous belt 64. The adjustment threaded rod 61 is fixedly connected to the bottom of the arc-shaped top support 41. The first synchronous pulley 62 and the second synchronous pulley 63 are rotatably connected to the bottom of the cross support platform 3. The first synchronous pulley 62 and the second synchronous pulley 63 are connected by the synchronous belt 64. The adjusting threaded rod 61 passes through the cross brace platform 3 and the first synchronous pulley 62. The adjusting threaded rod 61 is threadedly connected to the first synchronous pulley 62.
[0032] In this embodiment, the rotation of the second synchronous pulley 63 can drive the first synchronous pulley 62 to rotate via the synchronous belt 64. The rotation of the first synchronous pulley 62 can drive the adjusting threaded rod 61 to rise and fall on the cross support platform 3, that is, drive the arc-shaped top support seat 41 to rise and fall. The rise and fall of the arc-shaped top support seat 41 can drive the arc-shaped support top plate 2 to change its height. When the second synchronous pulley 63 rotates forward, the second synchronous pulley 63 drives the first synchronous pulley 62 to rotate forward. The forward rotation of the first synchronous pulley 62 drives the adjusting threaded rod 61 to rise on the cross support platform 3, that is, drive the arc-shaped top support seat 41 to rise. When the second synchronous pulley 63 rotates in reverse, the second synchronous pulley 63 drives the first synchronous pulley 62 to rotate in reverse. The reverse rotation of the first synchronous pulley 62 drives the adjusting threaded rod 61 to fall on the cross support platform 3, that is, drive the arc-shaped top support seat 41 to fall. Rotating the adjusting sleeve 432 can cause the first threaded rod 431 and the second threaded rod 433 to move closer to or further away from each other, thus making the length of the second support assembly 43 adjustable. When the adjusting sleeve 432 rotates forward, the first threaded rod 431 and the second threaded rod 433 move further away from each other, and the second support assembly 43 extends. When the adjusting sleeve 432 rotates in reverse, the first threaded rod 431 and the second threaded rod 433 move closer to each other, and the second support assembly 43 shortens. After the arc-shaped support seat 41 rises and causes the top of the arc-shaped support top plate 2 to fit against the top of the arc-shaped arch of the tunnel foundation pit, the length of the second support assembly 43 is adjusted so that the arc-shaped top plate fits against the arc-shaped support top plate 2. Then, the arc-shaped support top plate 2 fits completely against the arc-shaped arch of the tunnel foundation pit, thus achieving the support of the arc-shaped arch of the tunnel foundation pit.
[0033] like Figure 2 and Figure 5 as well as Figure 9 - Figure 11 As shown, a rectangular drive groove is provided in the middle of the drive bevel gear 51, and a rectangular drive groove is also provided in the middle of the second synchronous pulley 63. The drive rod 7 includes a drive square rod 71, a connecting round rod 72, and a connector 73. The drive square rod 71 is fixedly connected to the top of the connecting round rod 72, and the connector 73 is fixedly connected to the bottom of the connecting round rod 72. The drive square rod 71 can pass through the rectangular drive groove on the drive bevel gear 51 and the second synchronous pulley 63, and the drive square rod 71 slides in conjunction with the rectangular drive groove.
[0034] In this embodiment, the drive rod 7 can be connected to a motor via a connector 73, and the motor drives the drive rod 7 to rotate. The drive square rod 71 slides with the rectangular drive groove, so that the drive square rod 71 can simultaneously engage with the rectangular drive groove on the drive bevel gear 51 and the second synchronous wheel 63. The drive square rod 71 can also engage with the rectangular drive groove on the drive bevel gear 51 and the second synchronous wheel 63, so that the drive rod 7 can simultaneously drive the first adjustment mechanism 5 and the second adjustment mechanism 6, or drive the first adjustment mechanism 5 or the second adjustment mechanism 6, so that the change in the distance between the first side support plate 11 and the second side support plate 12 and the change in the height of the arc-shaped support top plate 2 can be carried out simultaneously. The distance between the first side support plate 11 and the second side support plate 12 or the height of the arc-shaped support top plate 2 can also be adjusted separately.
[0035] Working principle: When working, if support is needed, the device is pushed into the middle of the tunnel pit where support is needed by the caster wheel 14, so that the drive rod 71 can simultaneously engage with the rectangular drive groove on the drive bevel gear 51 and the second synchronous wheel 63, and the motor drives the drive rod 7 to rotate. When the drive rod 7 rotates forward, the drive rod 7 drives the drive bevel gear 51 to rotate forward, the drive bevel gear 51 drives the driven bevel gear ring 52 to rotate forward, the distance between the first side support plate 11 and the second side support plate 12 increases, the first side support plate 11 and the second side support plate 12 are in close contact with the tunnel pit sidewall, thus completing the support of the tunnel pit sidewall. When this support device is used as a temporary support device, the caster wheel 14 can easily change the distance between the first side support plate 11 and the second side support plate 12. When this support device is used as a permanent support device, channel steel can be pre-embedded in the ground on both sides of the slide rail 13. When the first adjustment mechanism 5 drives the cross brace platform 3 to expand the distance between the first side support plate 11 and the second side support plate 12, the slide rail 13 enters the channel steel, and the caster wheel 14 is pushed out by the channel steel. The caster wheel 14 can be easily disassembled and the operation is simple. Simultaneously, the drive rod 7 drives the second synchronous wheel 63 to rotate forward. The forward rotation of the second synchronous wheel 63 can drive the first synchronous wheel 62 to rotate forward through the synchronous belt 64. The forward rotation of the first synchronous wheel 62 can drive the adjusting threaded rod 61 to rise on the cross brace platform 3, that is, drive the arc-shaped top support seat 41 to rise. The rise of the arc-shaped top support seat 41 can drive the arc-shaped support top plate 2 to rise. After the arc-shaped top support seat 41 rises and drives the top of the arc-shaped support top plate 2 to fit with the top of the arc-shaped arch of the tunnel foundation pit, the length of the second top support component 43 is adjusted so that the arc-shaped top plate fits with the arc-shaped support top plate 2. Then, the arc-shaped support top plate 2 is completely fitted with the arc-shaped arch of the tunnel foundation pit to achieve the support of the arc-shaped arch of the tunnel foundation pit. At this point, the temporary support is quickly completed. If it is necessary to fine-tune the distance between the first side support plate 11 and the second side support plate 12, or fine-tune the height of the arc-shaped support top plate 2, simply adjust the vertical height of the drive square rod 71 so that the drive square rod 71 engages with the rectangular drive groove on the drive bevel gear 51, or the drive square rod 71 engages with the rectangular drive groove on the second synchronous wheel 63. Throughout the entire operation, the operator works below the device, and the entire operation is within the protection range of the device, which greatly improves the safety of operation. After the device is deployed, it does not occupy the middle passage or hinder the transportation of other equipment in the tunnel foundation pit, effectively improving construction efficiency. When this device is used as a temporary support and needs to be dismantled, simply reverse the drive rod 7, reduce the distance between the first side support plate 11 and the second side support plate 12, and lower the arc-shaped top support seat 41 to drive the arc-shaped support top plate 2 to lower, so that the device can be retracted, and the dismantling can be completed easily. It can also be quickly transported to the designated support position for secondary deployment and support. When this device is required as a permanent support device, anchor holes are provided on both the side support plate assembly 1 and the arc-shaped support top plate 2. Anchor rods are driven into the anchor holes, and then the movable parts on this device are welded to make it a permanent support device. The operation is simple and convenient, and the overall construction efficiency is high.
[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A tunnel foundation pit side and top integrated support device, comprising a side support plate assembly (1), an arc-shaped support top plate (2), and a cross bracing platform (3), characterized in that, The side support plate assembly (1) includes a first side support plate (11) and a second side support plate (12). The cross bracing platform (3) is fixedly arranged between the first side support plate (11) and the second side support plate (12). The arc-shaped support top plate (2) is arranged above the side support plate assembly (1). A top support mechanism (4) is arranged above the cross bracing platform (3). A first adjustment mechanism (5) is arranged at the top of the cross bracing platform (3). A second adjustment mechanism (6) is arranged at the bottom of the cross bracing platform (3). A through groove (15) is arranged at the top of both the first side support plate (11) and the second side support plate (12). Both sides of the arc-shaped support top plate (2) can be inserted into the through groove (15). A drive rod (7) is slidably connected to the cross support platform (3); The drive rod (7) can drive the first adjustment mechanism (5), and the first adjustment mechanism (5) can drive the cross brace platform (3) to change the distance between the first side support plate (11) and the second side support plate (12). The drive rod (7) can drive the second adjustment mechanism (6), and the second adjustment mechanism (6) can drive the top support mechanism (4) to change the height of the arc-shaped support plate (2).
2. The integrated side-top support device for tunnel foundation pits according to claim 1, characterized in that, The bottom of the first side support plate (11) and the second side support plate (12) are both fixedly provided with slide rails (13), and universal wheels (14) are slidably connected on the slide rails (13).
3. The integrated side-top support device for tunnel foundation pits according to claim 2, characterized in that, The cross support platform (3) is fixedly connected to the front and rear ends with cross support sleeves (31), and a cross support threaded rod (32) is slidably connected inside the cross support sleeve (31). One end of the cross support sleeve (31) is fixedly connected to the first side support plate (11), and one end of the cross support threaded rod (32) is fixedly connected to the second side support plate (12).
4. The integrated side-top support device for tunnel foundation pits according to claim 3, characterized in that, The first adjustment mechanism (5) includes a drive bevel gear (51) and a driven bevel gear ring (52). The drive bevel gear (51) is rotatably connected to the top of the cross support platform (3). The driven bevel gear ring (52) is rotatably connected to the port of the cross support sleeve (31). The cross support threaded rod (32) passes through the driven bevel gear ring (52). The cross support threaded rod (32) is threadedly connected to the driven bevel gear ring (52). The driven bevel gear ring (52) meshes with the drive bevel gear (51). The drive rod (7) can drive the drive bevel gear (51) to rotate.
5. The integrated side-top support device for tunnel foundation pits according to claim 4, characterized in that, The top support mechanism (4) includes an arc-shaped top support seat (41), a first top support rod (42), and a second top support assembly (43). The arc-shaped top support seat (41) is slidably connected above the cross support platform (3). Multiple first top support rods (42) are hinged to the middle of the top of the arc-shaped top support seat (41). Multiple second top support assemblies (43) are symmetrically hinged to the two sides of the top of the arc-shaped top support seat (41). The other end of the first top support rod (42) is hinged to the arc-shaped support top plate (2).
6. The integrated side-top support device for tunnel foundation pits according to claim 5, characterized in that, The second top support assembly (43) includes a first threaded rod (431), an adjusting sleeve (432), and a second threaded rod (433). One end of the first threaded rod (431) is hinged to the arc-shaped top support seat (41), and the other end of the first threaded rod (431) is threaded to the bottom of the adjusting sleeve (432). One end of the second threaded rod (433) is threaded to the top of the adjusting sleeve (432), and the other end of the second threaded rod (433) is fixedly connected to an arc-shaped top plate, which fits against the arc-shaped support top plate (2).
7. The integrated side-top support device for tunnel foundation pits according to claim 6, characterized in that, The second adjustment mechanism (6) includes an adjustment threaded rod (61), a first synchronous pulley (62), a second synchronous pulley (63), and a synchronous belt (64). The adjustment threaded rod (61) is fixedly connected to the bottom of the arc-shaped top support (41). The first synchronous pulley (62) and the second synchronous pulley (63) are rotatably connected to the bottom of the cross support platform (3). The first synchronous pulley (62) and the second synchronous pulley (63) are connected by the synchronous belt (64).
8. The integrated side-top support device for tunnel foundation pits according to claim 7, characterized in that, The adjusting threaded rod (61) passes through the cross brace platform (3), the adjusting threaded rod (61) passes through the first synchronous pulley (62), and the adjusting threaded rod (61) is threadedly connected to the first synchronous pulley (62).
9. The integrated side-top support device for tunnel foundation pits according to claim 8, characterized in that, The drive bevel gear (51) has a rectangular drive groove in the middle, and the second synchronous pulley (63) also has a rectangular drive groove in the middle. The drive rod (7) includes a drive square rod (71), a connecting round rod (72), and a connector (73). The drive square rod (71) is fixedly connected to the top of the connecting round rod (72), and the connector (73) is fixedly connected to the bottom of the connecting round rod (72). The drive square rod (71) can pass through the rectangular drive groove on the drive bevel gear (51) and the second synchronous pulley (63). The drive square rod (71) slides in conjunction with the rectangular drive groove.