CN111577348A - Quick bottom supporting device and method for lining trolley - Google Patents
Quick bottom supporting device and method for lining trolley Download PDFInfo
- Publication number
- CN111577348A CN111577348A CN202010407158.6A CN202010407158A CN111577348A CN 111577348 A CN111577348 A CN 111577348A CN 202010407158 A CN202010407158 A CN 202010407158A CN 111577348 A CN111577348 A CN 111577348A
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- sliding sleeve
- support
- telescopic rod
- rod
- lining trolley
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a quick bottom supporting device and a quick bottom supporting method for a lining trolley, wherein the device comprises a support connected with a side wall template of the lining trolley, and a telescopic mechanism and a telescopic rod which are respectively connected with the support; the telescopic mechanism comprises a sliding sleeve, a hydraulic oil cylinder and a base, wherein one end of the sliding sleeve is hinged to the lower end of the support and is of a telescopic structure, the end part of the hydraulic oil cylinder is hinged to the upper end of the support, the base is in clamping fit with the ground anchor, the other end of the sliding sleeve is hinged to the end part of a piston rod on the hydraulic oil cylinder, and a hinged shaft is fixed; the upper end of the telescopic rod is hinged to the lower end of the support, and the lower end of the telescopic rod is connected with the sliding sleeve body through a flexible rope. The method comprises the following steps: mounting a support device; arranging an earth anchor mounting hole; rotating the telescoping device; fixing a ground anchor; fixing the telescopic rod; the telescopic rod is contracted; dismantling the ground anchor; rotating the telescoping device; and (5) plugging the ground anchor mounting hole. The invention reduces the risk of thread damage, is convenient to disassemble and assemble, improves the construction efficiency and is convenient to popularize and use.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to a lining trolley bottom quick supporting device and method.
Background
At present, when the domestic tunnel lining trolley is used for pouring concrete, the bottom support of a template of the lining trolley is generally supported by a screw rod. The lead screw is mainly installed and disassembled by workers. After the lining trolley is poured, the lead screw usually bears a large part of lateral pressure, and workers need to remove the lead screw by means of auxiliary tools during detachment. Simultaneously when the pouring concrete, because the protection is not in place the concrete often can spill on the screw thread of lead screw, consequently increased the degree of difficulty of coming the dismouting through rotatory lead screw. The tunnel internal environment is complicated, construction conditions are poor, and lead to workman's the increase of amount of labour, the efficiency of construction step-down that lead to that lead to more, the singleton weight is heavier. The exposed screw thread of the screw rod still has the hidden danger of being injured by falling objects, and then the maintenance process is time-consuming, hard and difficult to restore.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the quick bottom supporting device for the lining trolley is provided; the hydraulic oil cylinder on the telescopic mechanism can realize automatic installation and disassembly, so that the construction efficiency is improved, the labor intensity of workers is reduced, and the device is novel and reasonable in design and convenient to popularize and use.
In order to solve the technical problems, the invention adopts the technical scheme that: a quick supporting device for the bottom of a lining trolley comprises a support connected with a side wall template of the lining trolley, and a telescopic mechanism and a telescopic rod which are respectively connected with the support; the telescopic mechanism comprises a sliding sleeve, a hydraulic oil cylinder and a base, wherein one end of the sliding sleeve is hinged to the lower end of the support and is of a telescopic structure, the end part of the hydraulic oil cylinder is hinged to the upper end of the support, the base is in clamping fit with the ground anchor, the other end of the sliding sleeve is hinged to the end part of a piston rod on the hydraulic oil cylinder, and a hinged shaft is fixed; the sliding sleeve comprises an inner rod and a sleeve rod sleeved on the inner rod, a long hole is formed in the sleeve rod, and a convex block in sliding fit with the long hole is arranged on the outer wall of the inner rod; the upper end of the telescopic rod is hinged to the lower end of the support, and the lower end of the telescopic rod is connected with the sliding sleeve body through a flexible rope.
Foretell swift strutting arrangement in lining cutting platform truck bottom, its characterized in that: the ground anchor stretches out the one end on ground for the straight-bar structure, the base includes the bottom plate and sets up the curb plate in the bottom plate upper surface left and right sides, be provided with the hinge hole on the curb plate, the bottom plate be provided with on the one side of keeping away from the sliding sleeve with the U-shaped groove of straight-bar structure adaptation.
Foretell swift strutting arrangement in lining cutting platform truck bottom, its characterized in that: the hinged position of the sliding sleeve and the support and the hinged position of the telescopic rod and the support are the same hinged shaft.
Foretell swift strutting arrangement in lining cutting platform truck bottom, its characterized in that: the telescopic rod is a lead screw.
Meanwhile, the invention also discloses a method for quickly supporting the bottom of the lining trolley, which has simple steps, reasonable design and can improve the construction efficiency, and is characterized by comprising the following steps:
step one, installing a bottom supporting device of a lining trolley:
enabling a piston rod of the hydraulic oil cylinder to keep a contraction state, and then connecting and fixing the support and the side wall template of the lining trolley;
step two, supporting the bottom of the lining trolley:
step 201, arranging a ground anchor mounting hole on the ground according to the position of a supporting device;
step 202, controlling a piston rod of the hydraulic oil cylinder to extend, wherein the piston rod extends to drive the sliding sleeve to shorten and then extend; the base moves downwards in the process of extending the piston rod, and when the lower surface of the base is contacted with the ground and moves to the ground anchor mounting hole, the piston rod of the hydraulic oil cylinder is controlled to stop extending, and the piston rod is kept at the current length;
step 203, inserting the ground anchor into the ground anchor mounting hole to enable the ground anchor and the base to be kept in a clamping connection state;
step 204, adjusting the telescopic rod to keep the telescopic rod in a vertical state, extending the telescopic rod to enable the lower end of the telescopic rod to be abutted against the ground, and further completing the support of the bottom of the lining trolley;
step three, retracting a bottom supporting device of the lining trolley:
step 301, the telescopic rod is contracted to keep a space between the telescopic rod and the ground;
step 302, removing the ground anchor;
step 303, controlling a piston rod of the hydraulic oil cylinder to contract, wherein the piston rod contracts to drive the sliding sleeve to contract, the base moves upwards and is far away from the ground in the process of contracting the piston rod, and meanwhile, the sliding sleeve drives the telescopic rod to rotate through the flexible rope;
and 304, plugging the ground anchor mounting hole, further completing the retraction of the supporting device, and keeping the supporting device on the lining trolley.
Compared with the prior art, the invention has the following advantages:
1. the telescopic mechanism arranged in the device can bear the lateral pressure applied to the device by the lining trolley through the ground anchor, and the problem that the lead screw is difficult to disassemble due to the fact that the lead screw is borne in the prior art is solved, so that the disassembling difficulty of the lead screw is reduced, the construction efficiency is improved, and the using effect is good.
2. According to the invention, the U-shaped groove is formed in the lower surface of the base, so that the device and the ground anchor can be quickly fixed in a clamping manner, the mounting and dismounting efficiency is improved, and the using effect is good.
3. The lug and the elongated hole arranged on the sliding sleeve can limit the extension and retraction of the telescopic mechanism, so that the telescopic mechanism can move upwards or downwards under the control of the hydraulic oil cylinder.
4. The telescopic rod adopts the lead screw, the telescopic rod is always kept in a vertical state in the using process, and the lead screw in the vertical state is parallel to the falling direction of concrete or other falling objects; consequently can avoid among the prior art lead screw to pass through the slope support, have the concrete and easily drop on the lead screw thread or injure the problem by a crashing object with the screw thread, and then reduced the impaired risk of screw thread for the telescopic link can keep good operating condition, the dismantlement or the maintenance in the later stage of being convenient for.
5. According to the method, the hydraulic oil cylinder on the telescopic mechanism can be automatically mounted and dismounted, the operation steps are simple, the workload of workers is reduced, the labor intensity is reduced, the construction efficiency is improved, and the method is convenient to popularize and use.
6. According to the method adopted by the invention, after the device is installed on the lining trolley, the device does not need to be installed or disassembled again when being used next time, so that the construction efficiency is improved, and the disassembly and assembly difficulty is reduced.
In conclusion, the telescopic rod disclosed by the invention is always kept in a vertical state in the using process, so that the risk of thread damage can be reduced, and meanwhile, only the supporting force in the vertical direction needs to be borne, so that the telescopic rod is convenient to disassemble and assemble; the hydraulic oil cylinder on the telescopic mechanism can realize automatic installation and disassembly, so that the construction efficiency is improved, the labor intensity of workers is reduced, and the device is novel and reasonable in design and convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
FIG. 2 is a structural diagram of the supporting state of the device of the present invention.
Fig. 3 is a schematic structural diagram of the base of the present invention.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a right side view of fig. 3.
Fig. 6 is a diagram of the state of use of the device of the present invention.
Fig. 7 is a force diagram of the hinge point of the piston rod and the sliding sleeve in the supporting process of the device.
Fig. 8 is a force diagram of the articulation point of the piston rod and the sliding sleeve during retraction of the device of the present invention.
FIG. 9 is a block flow diagram of the method of the present invention.
Description of reference numerals:
1-lining trolley; 2-side wall formwork; 3, a support;
4, a telescopic rod; 5, sliding sleeve; 6-a hydraulic oil cylinder;
7-an earth anchor; 8, a base; 9-a piston rod;
10-flexible rope, 11-lug, 12-side plate,
13-bottom plate, 14-U-shaped groove.
Detailed Description
As shown in fig. 1 to 8, the lining trolley bottom quick supporting device comprises a support 3 connected with a side wall formwork 2 of a lining trolley 1, and a telescopic mechanism and a telescopic rod 4 respectively connected with the support 3; the telescopic mechanism comprises a sliding sleeve 5, one end of which is hinged to the lower end of the support 3 and is of a telescopic structure, a hydraulic oil cylinder 6, the end part of which is hinged to the upper end of the support 3, and a base 8 which is in clamping fit with the ground anchor 7, wherein the other end of the sliding sleeve 5 is hinged to the end part of a piston rod 9 on the hydraulic oil cylinder 6, and a hinged shaft is fixed on the base 8; the sliding sleeve 5 comprises an inner rod and a sleeve rod sleeved on the inner rod, a long hole is formed in the sleeve rod, and a convex block 11 in sliding fit with the long hole is arranged on the outer wall of the inner rod; the upper end of the telescopic rod 4 is hinged at the lower end of the support 3, and the lower end of the telescopic rod 4 is connected with the sliding sleeve 5 body through a flexible rope 10.
It should be noted that the side wall formwork 2 is connected with the support 3 through bolts and nuts, so that the device is convenient to disassemble and assemble, and further the device is convenient to maintain or replace at a later stage. The control system of hydraulic cylinder 6 is connected to the control system of the lining trolley, so that the worker can control hydraulic cylinder 6 conveniently. The hydraulic oil cylinder 6 is positioned above the sliding sleeve 5 so as to control the sliding sleeve 5. The contact surfaces of the telescopic rod 4 and the base 8 with the ground are of anti-skid structures.
The lug 11 can move back and forth in the strip hole to limit the telescopic length of the sliding sleeve 5, and further limit the telescopic mechanism.
The telescopic mechanism can drive the sliding sleeve 5 to stretch out and draw back through the stretching of the hydraulic oil cylinder 6, and the telescopic mechanism can move upwards or downwards under the control of the hydraulic oil cylinder 6 because the hydraulic oil cylinder 6 and the sliding sleeve 5 are both in a hinged connection mode and under the limiting effect of the convex block 11. After the lower surface of the base 8 at the end part of the telescopic mechanism is contacted with the ground, the telescopic mechanism and the ground can be kept relatively fixed through being clamped with the ground anchor 7. Make its lower extreme and ground butt through the extension of telescopic link 4, can support lining cutting platform truck 1 bottom to accomplished the device and supported lining cutting platform truck 1's quick, the strutting arrangement convenient to detach of this state, the atress is balanced, and the steadiness is high.
In this embodiment, the one end that ground anchor 7 stretches out ground is the straight-bar structure, base 8 includes bottom plate 13 and sets up the curb plate 12 in the upper surface left and right sides of bottom plate 13, be provided with the hinge hole on the curb plate 12, bottom plate 13 be provided with on the side of keeping away from sliding sleeve 5 with the U-shaped groove 14 of straight-bar structure adaptation.
It should be noted that the ground anchor 7 is a structural member temporarily installed on the ground of the construction area, and is used for fixing the telescopic mechanism and bearing the lateral pressure applied to the device by the lining trolley, so that the problem that the device is difficult to disassemble due to the fact that the device is supported by a lead screw in the prior art is solved.
The U-shaped groove can be fast fixed with the device and earth anchor 7 through the mode of joint, and the structure in U-shaped groove can be convenient for the dismantlement of earth anchor 7 simultaneously.
The flexible line 10 is preferably a steel wire rope or a chain.
In this embodiment, the hinged position of the sliding sleeve 5 and the support 3 and the hinged position of the telescopic rod 4 and the support 3 are the same hinged shaft.
It should be noted that the sliding sleeve 5 and the telescopic rod 4 are the same articulated shaft, which simplifies the structure of the device.
In this embodiment, the telescopic rod 4 is a lead screw. The screw is low in cost and easy to operate.
As shown in fig. 1 to 9, a method for quickly supporting the bottom of a lining trolley comprises the following steps:
step one, installing a bottom supporting device of a lining trolley:
keeping a piston rod 9 of the hydraulic oil cylinder 6 in a contraction state, and then connecting and fixing the support 3 and the side wall template 2 of the lining trolley 1;
when strutting arrangement is connected fixedly with 1 side wall template 2 of lining cutting platform truck, piston rod 9 and telescopic link 4 all keep the contraction state and can make the device easily install, avoid base 8 and telescopic link 4 and ground to take place the phenomenon of colliding with.
After the plurality of supporting devices are installed on the lining trolley, the supporting process of the bottom of the lining trolley can be carried out, and the supporting processes of the supporting devices can be carried out one by one or simultaneously at a plurality of positions.
Step two, supporting the bottom of the lining trolley:
step 201, arranging a mounting hole of a ground anchor 7 on the ground according to the position of a supporting device;
after the lower surface of the base 8 is contacted with the ground, the base 8 can still move rightwards continuously by extending the piston rod 9, and after the base moves for a certain distance, the base 8 reaches the maximum moving distance due to the limitation of the extending amounts of the piston rod 9 and the sliding sleeve 5; the point between the maximum moving distance and the point when the ground contact is started can be used as the setting position of the mounting hole of the ground anchor 7.
During actual supporting, the mounting hole of the ground anchor 7 is preferably the central point of the setting position, when a worker sets the mounting hole of the ground anchor 7 at the central point, the left side and the right side are positioned in the error range of the mounting hole of the ground anchor 7 which can be set as a constructor by the distance in the setting position, so that the actual operation of the constructor is convenient, and the mounting reliability of the supporting device is guaranteed.
Step 202, controlling a piston rod 9 of the hydraulic oil cylinder 6 to extend, wherein the piston rod 9 extends to drive the sliding sleeve 5 to shorten and then extend; the base 8 moves downwards in the process of extending the piston rod 9, and when the lower surface of the base 8 contacts the ground and moves to the mounting hole of the ground anchor 7, the piston rod 9 of the hydraulic oil cylinder 6 is controlled to stop extending, and the piston rod 9 is kept at the current length;
as shown in fig. 6, the piston rod 9 is extended, a pulling force F along the axial direction is generated at the hinge point of the piston rod 9 and the sliding sleeve 5, the pulling force F generates a component force F1 in the axial direction of the sliding sleeve 5 and a component force F2 perpendicular to the axial direction of the sliding sleeve 5, the sliding sleeve 5 cannot be extended due to the limiting function of the projection 11 in the elongated hole, the component force F2 is downward, so that the hinge point of the piston rod 9 and the sliding sleeve 5 moves obliquely downward, at this time, the piston rod 9 is extended, and the sliding sleeve 5 is shortened; the telescopic mechanism continues to rotate clockwise in the process of shortening the sliding sleeve 5, and the piston rod 9 and the sliding sleeve 5 continue to extend until the lower surface of the base 8 contacts with the ground.
Step 203, inserting the ground anchor 7 into the ground anchor 7 mounting hole, so that the ground anchor 7 and the base 8 keep a clamping state;
the earth anchor 7 passes and inserts behind the U-shaped groove 7 mounting holes of earth anchor, 7 lateral walls of earth anchor and U-shaped groove arc lateral wall butt, and then fixed telescopic machanism and ground.
Step 204, adjusting the telescopic rod 4 to keep the telescopic rod in a vertical state, extending the telescopic rod 4 to enable the lower end of the telescopic rod to be abutted against the ground, and further completing the support of the bottom of the lining trolley 1;
the telescopic link 4 adopts the lead screw, and telescopic link 4 remains vertical state throughout in the use, and the lead screw of vertical state is parallel with the direction that concrete or other droppings dropped, consequently can avoid among the prior art lead screw to have the concrete through the slope to support and easily drop on the lead screw or smash the problem that the screw thread injures.
Step three, retracting a bottom supporting device of the lining trolley:
step 301, the telescopic rod 4 is contracted to keep a space with the ground;
the telescopic rod 4 is contracted so as to facilitate the subsequent retraction of the whole supporting device through the rotary telescopic mechanism;
step 302, dismantling the ground anchor 7;
step 303, controlling a piston rod 9 of the hydraulic oil cylinder 6 to contract, wherein the piston rod 9 contracts to drive the sliding sleeve 5 to contract, the base 8 moves upwards and is far away from the ground in the process of contracting the piston rod 9, and meanwhile, the sliding sleeve 5 drives the telescopic rod 4 to rotate through the flexible rope 10;
as shown in fig. 7, the piston rod 9 contracts to generate a pulling force F1 along the axial direction at the hinge point of the piston rod 9 and the sliding sleeve 5, the pulling force F1 generates a component force F4 in the axial direction of the sliding sleeve 5 and a component force F3 perpendicular to the axial direction of the sliding sleeve 5, the component force F4 causes the sliding sleeve 5 to contract, the component force F3 is upward to cause the hinge point of the piston rod 9 and the sliding sleeve 5 to move obliquely upward, and at this time, both the piston rod 9 and the sliding sleeve 5 shorten; the piston rod 9 and the sliding sleeve 5 rotate anticlockwise in the process of shortening until the telescopic mechanism rotates to a set state;
304, plugging the mounting hole of the ground anchor 7, further completing the retraction of the supporting device, and keeping the supporting device on the lining trolley 1;
the ground anchor mounting hole is blocked, so that subsequent tunnel construction is facilitated.
After the device is installed on the lining trolley, the device does not need to be installed or detached again when being used next time. When the device is not used, the telescopic mechanism and the telescopic rod 4 are retracted by retracting the piston rod 9 of the hydraulic oil cylinder 6.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a swift strutting arrangement in lining cutting platform truck bottom which characterized in that: comprises a support (3) connected with a side wall template (2) of a lining trolley (1), and a telescopic mechanism and a telescopic rod (4) which are respectively connected with the support (3); the telescopic mechanism comprises a sliding sleeve (5) with one end hinged to the lower end of the support (3) and a telescopic structure, a hydraulic oil cylinder (6) with the end hinged to the upper end of the support (3), and a base (8) in clamping fit with the ground anchor (7), wherein the other end of the sliding sleeve (5) is hinged to the end of a piston rod (9) on the hydraulic oil cylinder (6), and a hinged shaft is fixed on the base (8);
the sliding sleeve (5) comprises an inner rod and a sleeve rod sleeved on the inner rod, a long hole is formed in the sleeve rod, and a convex block (11) in sliding fit with the long hole is arranged on the outer wall of the inner rod;
the upper end of the telescopic rod (4) is hinged at the lower end of the support (3), and the lower end of the telescopic rod (4) is connected with the sliding sleeve (5) body through a flexible rope (10).
2. The lining trolley bottom shortcut support apparatus of claim 1, wherein: the ground anchor (7) stretch out the one end on ground for the straight-bar structure, base (8) include bottom plate (13) and set up curb plate (12) in bottom plate (13) upper surface left and right sides, be provided with the hinge hole on curb plate (12), bottom plate (13) be provided with on the one side of keeping away from sliding sleeve (5) with U-shaped groove (14) of straight-bar structure adaptation.
3. The lining trolley bottom shortcut support apparatus of claim 1, wherein: the hinged position of the sliding sleeve (5) and the support (3) and the hinged position of the telescopic rod (4) and the support (3) are the same hinged shaft.
4. The lining trolley bottom shortcut support apparatus of claim 1, wherein: the telescopic rod (4) is a lead screw.
5. A method for lining bottom shortcut support of a trolley using the apparatus of claim 1, characterized in that: the method comprises the following steps:
step one, installing a bottom supporting device of a lining trolley:
keeping a piston rod (9) of the hydraulic oil cylinder (6) in a contraction state, and then connecting and fixing the support (3) and the side wall template (2) of the lining trolley (1);
step two, supporting the bottom of the lining trolley:
step 201, arranging a mounting hole of a ground anchor (7) on the ground according to the position of a supporting device;
step 202, controlling a piston rod (9) of the hydraulic oil cylinder (6) to extend, wherein the piston rod (9) extends to drive the sliding sleeve (5) to shorten and then extend; the base (8) moves downwards in the process that the piston rod (9) extends, and after the lower surface of the base (8) is in contact with the ground and moves to the mounting hole of the ground anchor (7), the piston rod (9) of the hydraulic oil cylinder (6) is controlled to stop extending, and the piston rod (9) is kept at the current length;
step 203, inserting the ground anchor (7) into the ground anchor (7) mounting hole to enable the ground anchor (7) and the base (8) to be kept in a clamping state;
204, adjusting the telescopic rod (4) to keep the telescopic rod in a vertical state, and extending the telescopic rod (4) to enable the lower end of the telescopic rod to be abutted against the ground, so that the bottom of the lining trolley (1) is supported;
step three, retracting a bottom supporting device of the lining trolley:
step 301, the telescopic rod (4) is contracted to keep a space with the ground;
step 302, removing the ground anchor (7);
303, controlling a piston rod (9) of the hydraulic oil cylinder (6) to contract, wherein the piston rod (9) contracts to drive the sliding sleeve (5) to contract, the base (8) moves upwards and is far away from the ground in the contraction process of the piston rod (9), and meanwhile, the sliding sleeve (5) drives the telescopic rod (4) to rotate through the flexible rope (10);
and step 304, plugging the mounting hole of the ground anchor (7), further completing the retraction of the supporting device, and keeping the supporting device on the lining trolley (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010407158.6A CN111577348B (en) | 2020-05-14 | 2020-05-14 | Quick bottom supporting device and method for lining trolley |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010407158.6A CN111577348B (en) | 2020-05-14 | 2020-05-14 | Quick bottom supporting device and method for lining trolley |
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| CN111577348A true CN111577348A (en) | 2020-08-25 |
| CN111577348B CN111577348B (en) | 2021-06-18 |
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| CN112499530A (en) * | 2020-11-27 | 2021-03-16 | 国网山东省电力公司建设公司 | Earth anchor demolishs device for electric power engineering construction |
| CN113622919A (en) * | 2021-08-26 | 2021-11-09 | 宁夏天地西北煤机有限公司 | Anti-slip device and displacement type belt conveyor |
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| CN211230500U (en) * | 2019-12-16 | 2020-08-11 | 洛阳高飞桥隧机械有限公司 | Portal-free lining template trolley device for tunnel concrete construction |
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| CN112373489A (en) * | 2020-10-26 | 2021-02-19 | 天津轻工职业技术学院 | Telescopic pedal for shield door connection table and use method thereof |
| CN112499530A (en) * | 2020-11-27 | 2021-03-16 | 国网山东省电力公司建设公司 | Earth anchor demolishs device for electric power engineering construction |
| CN113622919A (en) * | 2021-08-26 | 2021-11-09 | 宁夏天地西北煤机有限公司 | Anti-slip device and displacement type belt conveyor |
| CN113622919B (en) * | 2021-08-26 | 2023-06-16 | 宁夏天地西北煤机有限公司 | Anti-slip device and displacement type belt conveyor |
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