CN218504810U - Prefabricated box girder end mould form removal device - Google Patents
Prefabricated box girder end mould form removal device Download PDFInfo
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- CN218504810U CN218504810U CN202222282058.2U CN202222282058U CN218504810U CN 218504810 U CN218504810 U CN 218504810U CN 202222282058 U CN202222282058 U CN 202222282058U CN 218504810 U CN218504810 U CN 218504810U
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- box girder
- reaction frame
- girder end
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- end mould
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Abstract
The utility model provides a prefabricated box girder end mould form removal device belongs to bridge prefabricated box girder construction technical field. The utility model comprises a reaction frame, a pushing mechanism and a balance pull rod. Wherein the reaction frame is respectively connected with the pushing mechanism and the box girder end mould, the balance pull rod is respectively connected with the reaction frame and the box girder end mould, and the pushing mechanism is abutted against the bottom beam of the box girder end mould and is connected with the reaction frame. The reaction frame and the box girder end mould are kept in a vertical position relation by adjusting the length of the balance pull rod, the pushing mechanism is started, the pushing mechanism applies acting force to the reaction frame in a direction far away from the end mould to drive the box girder end mould to move along with the reaction frame, and concrete at the box girder end mould and the girder end are separated. The utility model discloses simple and convenient in whole operation process, can be easily with case beam-ends mould and beam-ends concrete separation, guarantee that case beam-ends mould is even at form removal in-process atress, reduced the breakage rate of beam-ends concrete and the deformation rate of case beam-ends mould.
Description
Technical Field
The utility model relates to a prefabricated box girder construction technical field of bridge, specific saying so, a prefabricated box girder end mould demolishs device.
Background
Box girder prefabrication is very common in bridge construction. In the box girder prefabrication construction process, the box girder needs to demolish the end mould after the factory prefabrication is completed, the traditional end mould demolishing process needs a plurality of operators, the templates are separated from the beam end concrete one by one through prying and knocking the templates, half a day or more time is needed for demolishing one end mould, in addition, the whole-course matching of large-scale hoisting equipment is needed in the demolishing process, and the time and the labor are wasted due to the simultaneous operation of a plurality of operators.
The problems of asynchronous end die removal and uneven stress easily occur in the manual prying and dismounting process. Not only easily cause the damage of beam-ends concrete but also easily make the end mould warp, influence the problem of follow-up prefabricated box girder construction and box girder appearance quality moreover.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a precast box girder end mould form removal device to solve the end mould that the form removal in-process exists among the prior art and demolish asynchronous, the uneven technical problem of atress.
In order to achieve the above object, the utility model adopts the following technical scheme: the prefabricated box girder end formwork stripping device comprises a reaction frame, a balance pull rod and a pushing mechanism, wherein one end of the reaction frame is provided with a first detachable connecting structure so as to be connected with a box girder end formwork, and the other end of the reaction frame extends outwards; the balance pull rod is of a rod structure capable of stretching along the length direction, one end of the balance pull rod is connected with the middle part or the outward extending end of the reaction frame, the other end of the balance pull rod is provided with a second detachable connecting structure to be connected with the box girder end die, and the connecting point of the second detachable connecting structure and the box girder end die is positioned on one side of the connecting point of the first detachable connecting structure and the box girder end die so as to adjust the angle between the reaction frame and the box girder end die by adjusting the length of the balance pull rod; and one end of the pushing mechanism is connected with one end of the reaction frame, which extends outwards, and the other end of the pushing mechanism is used for abutting against the bottom beam of the box girder end mold, so that the reaction frame pulls the box girder end mold by applying pushing force, and the box girder end mold is separated from the beam end concrete.
As another embodiment of the application, the number of the balance pull rods is two, and the two balance pull rods are respectively positioned on two sides of the reaction frame.
As another embodiment of the application, the number of the balance pull rods is at least three, and the three balance pull rods are distributed on the periphery of the reaction frame.
As another embodiment of the present application, the first detachable connection structure and the second detachable connection structure are one of a hinge structure, a pin connection structure, a bolt connection structure, and a snap connection structure.
As another embodiment of the application, the reaction frame is an L-shaped support, the L-shaped support comprises two L-shaped steel plates which are arranged in parallel, and a first connecting hole is formed in one end, used for being connected with the box girder end die, of each L-shaped steel plate.
As another embodiment of the application, the pushing mechanism is a hydraulic cylinder, an electric push rod or an air cylinder.
As another embodiment of the present application, the connection between the movable end of the pushing mechanism and the end mold bottom beam is as follows: pin joint, bolt joint, clamping joint or abutting joint.
As another embodiment of the application, the balance pull rod is a turnbuckle, an adjusting screw rod or a telescopic rod.
As another embodiment of the application, the balance pull rod comprises a central tube, a positive wire adjusting tube, a negative wire adjusting tube and a locking piece, wherein two ends of the central tube are respectively provided with internal threads, one end of the positive wire adjusting tube is provided with external threads and is in threaded connection with the central tube through the internal and external threads, and the other end of the positive wire adjusting tube is connected with the reaction frame through a detachable connection structure; one end of the reverse-thread adjusting pipe is provided with external threads which are in threaded connection with the central pipe through the internal threads and the external threads, and the other end of the reverse-thread adjusting pipe is connected with the box girder end mold through a detachable connection structure; the locking pieces are located at two ends of the central pipe, and the central pipe and the adjusting pipe are locked and fixed through adjusting the locking pieces after the length of the balance pull rod is adjusted in place.
As another embodiment of the application, the balance pull rod comprises a first adjusting pipe and a second adjusting pipe, wherein one end of the first adjusting pipe is provided with a limiting hole, and the other end of the first adjusting pipe is connected with the reaction frame through a detachable connecting structure; one end of the second adjusting pipe is provided with a plurality of clamping holes which are arranged at intervals along the longitudinal direction of the pipe body and are linearly arranged, and the other end of the second adjusting pipe is connected with the box girder end mould through a detachable connecting structure; the bolt is arranged in the limiting hole and is inserted into the clamping hole so as to drive the first adjusting pipe to move relative to the second adjusting pipe.
The utility model provides a pair of precast box girder end mould form removal device's beneficial effect lies in: compared with the prior art, one end of the reaction frame is connected with the box girder end mould, the other end of the reaction frame is connected with the pushing mechanism, the pushing mechanism is started, the movable end of the pushing mechanism is connected on the end mould bottom beam, so that the reaction frame draws the box girder end mould by applying the pushing force, the box girder end mould is driven to move along with the box girder end mould, and the box girder end mould and the girder end concrete are separated; one end of the balance pull rod is connected with the box girder end die, one end of the balance pull rod is connected with the reaction frame, the angle between the reaction frame and the box girder end die is adjusted by adjusting the length of the balance pull rod, the length of the fixed balance pull rod is screwed after the reaction frame and the box girder end die form a vertical relation, so that the reaction frame and the box girder end die are always kept in the vertical relation in the pushing motion, the stress is uniform when the box girder end die is separated from concrete, the effects of reducing the damage rate of the girder end concrete and reducing the deformation of the box girder end die are achieved, and the work efficiency is improved simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a dismounting device according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
wherein the reference numerals in the figures are as follows:
1. a reaction frame; 2. a balance pull rod; 3. a pushing mechanism; 4. an end form bottom beam; 5. a box girder end mold; 6. a bolt; 7. a first connecting member; 8. a second connecting member; 9. a first connection hole; 10. and a second connection hole.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be further noted that the drawings and embodiments of the present invention mainly describe the concept of the present invention, and on the basis of the concept, the specific forms and arrangements of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems, control systems, etc. may not be completely described, but those skilled in the art can implement the specific forms and arrangements in a well-known manner on the premise that those skilled in the art understand the concept of the present invention.
When an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more, and "several" means one or more unless specifically limited otherwise.
It is right now the utility model provides a pair of precast box girder end mould form removal device explains.
Referring to fig. 1 and 2 together, a precast box girder end form removing apparatus according to a first embodiment of the present invention includes a reaction frame 1, a balance rod 2, and a pushing mechanism 3. The first connecting piece 7 connects the reaction frame 1 with the box girder end mould 5 through the first connecting hole 9, the movable end of the pushing mechanism 3 is connected with the end mould bottom beam 4, the base of the pushing mechanism 3 is connected and fixed with the reaction frame 1 through the bolt 6, meanwhile, the pushing mechanism is convenient to disassemble and install, the balance pull rod 2 is arranged on the reaction frame 1, the first connecting piece 7 connects the reaction frame 1 with the balance pull rod 2 through the second connecting hole 10, the other end of the first connecting piece is connected with the box girder end mould 5 through the second connecting piece 8, the length of the balance pull rod 2 is adjusted to adjust the angle between the reaction frame 1 and the box girder end mould 5, when the reaction frame 1 and the box girder end mould 5 keep a vertical relation, the length of the balance pull rod 2 is screwed and fixed, the included angle formed by the balance pull rod 2 and the box girder end mould 5 is fixed, the reaction frame 1 is guaranteed to be always guaranteed to be in a vertical relation with the box girder end mould 5 under the pushing action, and the box girder end mould 5 is evenly stressed when the concrete is separated, thereby achieving the technical effects of reducing the breakage rate of the girder end and reducing the deformation of the box girder end mould 5.
Compared with the prior art, the precast box girder end formwork stripping device provided by the embodiment has the advantages that the reaction frame 1 is connected with the box girder end formwork 5 through the first connecting hole 9 by the first connecting piece 7, the movable end of the pushing mechanism 3 is connected to the end formwork bottom beam 4, the balance pull rod 2 is arranged at the other end of the reaction frame 1, the reaction frame 1 is connected with the balance pull rod 2 through the second connecting hole 10 by the first connecting piece 7, the other end of the reaction frame is connected with the box girder end formwork 5 through the second connecting hole 10 by the second connecting piece 8, an included angle formed by the balance pull rod 2 and the box girder end formwork 5 is an acute angle, the included angle formed by the balance pull rod 2 and the box girder end formwork 5 is not changed all the time in the motion process, so that the vertical relation between the reaction frame 1 and the box girder end formwork 5 under the pushing action is guaranteed all the time, the stress is uniform when the box girder end formwork 5 is separated from the girder end concrete, and the deformation of the box girder end formwork 5 is reduced.
Referring to fig. 1, the present invention provides a further embodiment based on the first embodiment, in which the pushing mechanism 3 is an electric push rod or an air cylinder, and the movable end of the pushing mechanism 3 is connected to the end mold bottom beam 4 by a pin joint, a bolt joint, a snap joint or an abutment.
As an alternative embodiment, hydraulic cylinders may be used for the detachment of the heavier box girder end mould 5.
The hydraulic oil cylinder mainly effectively converts hydraulic energy into mechanical energy, and mainly is a hydraulic actuating element which makes linear reciprocating motion in the using process, the whole equipment is simple in structure and reliable in work, when the hydraulic oil cylinder is mainly used for realizing reciprocating motion, a speed reducing device can be omitted, no transmission gap exists, and the hydraulic oil cylinder is very stable in the operating process, so that the hydraulic oil cylinder is widely applied to hydraulic systems of various machines.
The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides, and the hydraulic cylinder basically comprises a cylinder barrel and a cylinder cover, the piston and a piston rod, a sealing device, a buffer device and an exhaust device.
The hydraulic oil cylinder has various structural forms, and can be effectively divided into a linear reciprocating motion type and a rotary swinging type according to the motion mode of the hydraulic oil cylinder, and equipment can be divided into a single-acting type and a double-acting type according to the hydraulic pressure action condition of the equipment; the structure can be divided into a piston type, a plunger type and a swing type.
In the single-acting hydraulic cylinder, pressure oil only supplies one cavity of the hydraulic cylinder, the cylinder realizes unidirectional movement by hydraulic pressure, and the movement in the opposite direction is realized by external force such as spring force, dead weight or external load and the like; the movement of the double-acting hydraulic cylinder piston in two directions is completed by the alternate oil feeding of the two cavities and the action of hydraulic pressure.
The piston type hydraulic cylinder can be divided into a single-rod type structure and a double-rod type structure, the fixing mode is that the cylinder body is fixed and the piston rod is fixed, and the piston type hydraulic cylinder has a single-acting type and a double-acting type according to the action condition of hydraulic pressure. In the single-acting hydraulic cylinder, pressure oil only supplies one cavity of the hydraulic cylinder, the cylinder realizes unidirectional movement by hydraulic pressure, and the movement in the opposite direction is realized by external force such as spring force, dead weight or external load and the like; the movement of the double-acting hydraulic cylinder piston in two directions is completed by the alternate oil feeding of the two cavities and the action of hydraulic pressure.
The electric push rod is also called a linear driver, is a novel linear actuating mechanism mainly composed of a motor push rod, a control device and other mechanisms, and can be considered as an extension of a rotating motor in the aspect of structure.
The electric push rod is an electric driving device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod. The device can be used as an execution machine in various simple or complex process flows to realize remote control, centralized control or automatic control.
The electric push rod has the characteristics of novel and exquisite design, small volume, high precision, complete synchronization, good self-locking performance, sanitation, direct driving of a motor, no need of an air source and an oil way of a pipeline and the like, and is widely applied to equipment in various industries such as production lines, automobiles, ventilation window opening, war industry, stages, textile, sewage treatment and the like.
Referring to fig. 1 to 2, the present invention provides a first embodiment in which the balance rod 2 is disposed on both sides of the reaction frame 1.
Referring to fig. 1 to 2, the present invention provides a first embodiment of the present invention, wherein the reaction frame 1 is made of L-shaped steel plates and arranged in parallel.
The reaction frame 1 adopts an L-shaped steel plate, and combines the supporting system and the transmission system together. One end of the reaction frame 1 is connected with the box girder end mould 5 through a first connecting piece 7, the movable end of the pushing mechanism 3 is connected with the end mould bottom beam 4 in an abutting mode, the base is placed at the L-shaped groove of the reaction frame 1, and the base of the pushing mechanism 3 is connected with the reaction frame 1 through a bolt 6. In order to ensure the smooth and safe operation of the pushing mechanism 3, a skid can be added at the movable end of the pushing mechanism 3 to increase the contact area. By starting the pushing mechanism 3, the movable end acts on the end mould bottom beam 4 to generate a reaction force, the reaction frame 1 is driven to move in a reverse direction towards one side far away from the beam end concrete, and finally the box girder end mould 5 is driven to be separated from the beam end concrete, so that the aim of mould removal is fulfilled.
The reaction frames 1 are arranged in parallel, the scheme can ensure that the stress of the box girder end mould 5 is balanced in the pushing process and the pushing mechanism 3 is stable in the moving process, and the problem of deformation caused by uneven stress of the box girder end mould 5 in the dismantling process can be reduced.
Referring to fig. 1 to 2, the balance rod 2 of the present invention is a turn buckle, which is provided as follows based on the first embodiment.
The turn buckle is also called as a rigging screw buckle and a wire fastening buckle. The turn buckle consists of an adjusting rod with left and right threads, a nut and a pull rod, and the adjusting rod is also fixed with an anti-theft and anti-loosening device which is formed by connecting the turn buckle with a cover plate, a fixing plate and a guide plate into a whole by using an anti-theft and anti-loosening bolt. When in use, the anti-theft anti-loose bolt can be unscrewed only by using a special matched sleeve, and the anti-theft anti-loose bolt has good anti-theft effect, and is safe and reliable. After the anti-theft and anti-loosening device is disassembled, the anti-theft and anti-loosening device does not need to be taken down, and the whole length of the turn buckle can be adjusted by utilizing the ring guide plate on the anti-theft and anti-loosening device to slide along the pull rod, so that the anti-theft and anti-loosening device is convenient to use.
Referring to fig. 1 to 2, the present invention provides a balance bar 2, which includes a central tube, a positive wire adjusting tube, a negative wire adjusting tube and a locking member. The two ends of the central tube are respectively provided with internal threads, one end of the positive thread adjusting tube is provided with external threads and is in threaded connection with the central tube through the internal and external threads, and the other end of the positive thread adjusting tube is connected with the reaction frame 1 through a detachable connection structure; one end of the reverse-thread adjusting pipe is provided with external threads and is in threaded connection with the central pipe through the internal and external threads, and the other end of the reverse-thread adjusting pipe is connected with the box girder end mould 5 through a detachable connecting structure; the retaining member is located the center tube both ends, 2 length adjustment of balanced pull rod back that target in place, lock fixedly through adjusting the retaining member to center tube and control tube.
The positive wire adjusting pipe, the central pipe, the negative wire adjusting pipe and the locking piece are coaxially arranged. One end of the external thread of the positive wire adjusting pipe penetrates through the locking piece to be in threaded connection with the internal thread at one end of the central pipe, and the other end of the positive wire adjusting pipe is connected with the box girder end die 5; one end of the external thread of the reverse-thread adjusting pipe penetrates through the locking piece to be in threaded connection with the internal thread of the central pipe, and the other end of the external thread of the reverse-thread adjusting pipe is connected with the reaction frame 1; after the balance pull rod 2 is connected with the box girder end mold 5 and adjusted in place, the central pipe and the adjusting pipe are screwed and fixed through the locking piece.
The vertical position relation between the reaction frame 1 and the box girder end mold 5 is ensured through the balance pull rod 2, and the box girder end mold 5 is prevented from being deformed due to uneven stress of the box girder end mold 5 in the pushing process.
Referring to fig. 1 to 2, the present invention provides a first embodiment of a balance rod 2, wherein the balance rod includes a first adjusting tube, a second adjusting tube and a plug pin. One end of the first adjusting pipe is provided with a limiting hole, and the other end of the first adjusting pipe is connected with the reaction frame 1 through a detachable connecting structure; one end of the second adjusting pipe is provided with a plurality of clamping holes which are arranged at intervals along the longitudinal direction of the pipe body and are linearly arranged, and the other end of the second adjusting pipe is connected with the box girder end mould 5 through a detachable connecting structure; the bolt is arranged in the limiting hole and is inserted into the clamping hole so as to drive the first adjusting pipe to move relative to the second adjusting pipe.
The first adjusting pipe and the second adjusting pipe are coaxially arranged. The one end that the screens hole was left to the second control tube is inserted and is connected in first control tube, and first control tube is connected with reaction frame 1 through dismantling connection structure, and the second control tube is connected with case roof beam end mould 5 through dismantling connection structure, through the whole length of adjusting first control tube and second control tube, adjusts the position relation of reaction frame 1 and case roof beam end mould 5, when reaction frame 1 keeps the vertical relation with case roof beam end mould 5, the bolt install in spacing hole, and plug-in screens hole, but guarantee that the whole length of inserted link is certain.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a precast box girder end mould form removal device which characterized in that, it includes:
one end of the reaction frame (1) is provided with a first detachable connecting structure so as to be connected with the box girder end mould (5), and the other end of the reaction frame (1) extends outwards;
the balance pull rod (2) is of a rod structure capable of stretching along the length direction, one end of the balance pull rod (2) is connected with the middle part or the outward extending end of the reaction frame (1), the other end of the balance pull rod is provided with a second detachable connecting structure to be connected with the box girder end die (5), and the connecting point of the second detachable connecting structure and the box girder end die (5) is located on one side of the connecting point of the first detachable connecting structure and the box girder end die (5) so as to adjust the angle between the reaction frame (1) and the box girder end die (5) by adjusting the length of the balance pull rod (2); and
and one end of the pushing mechanism (3) is connected with one end of the reaction frame (1) extending outwards, and the other end of the pushing mechanism is used for being abutted against the end mould bottom beam (4) so as to enable the reaction frame (1) to draw the box girder end mould (5) by applying pushing force, thereby enabling the box girder end mould (5) to be separated from the beam end concrete.
2. The precast box girder end form stripping device according to claim 1, wherein the number of the balance pull rods (2) is two, and the two balance pull rods (2) are respectively located at both sides of the reaction frame (1).
3. The precast box girder end form stripping device according to claim 1, wherein the number of the tie bars (2) is at least three, and three tie bars (2) are distributed on the outer circumference of the reaction frame (1).
4. The precast box girder end formwork stripping device according to claim 1, wherein the first detachable connection structure and the second detachable connection structure are one of a hinge structure, a pin joint structure, a bolt connection structure and a clamping connection structure.
5. The precast box girder end form demolition device according to claim 1 wherein the reaction frame (1) is an L-shaped bracket comprising two L-shaped steel plates arranged in parallel, and the L-shaped steel plates are provided with a first connecting hole (9) at one end for connecting with the box girder end form (5).
6. The precast box girder end form demolition device according to claim 1, wherein the pushing mechanism (3) is a hydraulic cylinder, an electric push rod or an air cylinder.
7. The precast box girder end mold stripping device according to claim 6, wherein the movable end of the pushing mechanism (3) is connected with the end mold bottom beam (4) in a pin joint, a bolt joint, a clamping joint or an abutting joint mode.
8. The precast box girder end form stripping device according to claim 1, wherein the balance tie bar (2) is a turnbuckle, an adjusting screw or a telescopic rod.
9. The precast box girder end form demolition apparatus according to claim 1, wherein the tie bar (2) comprises:
the two ends of the central tube are respectively provided with internal threads;
one end of the positive thread adjusting pipe is provided with an external thread and is in threaded connection with the central pipe through the internal thread and the external thread, and the other end of the positive thread adjusting pipe is connected with the reaction frame (1) through a detachable connection structure;
one end of the reverse-thread adjusting pipe is provided with external threads and is in threaded connection with the central pipe through the internal and external threads, and the other end of the reverse-thread adjusting pipe is connected with the box girder end mould (5) through a detachable connecting structure;
the locking piece is located the center tube both ends, after balance pull rod (2) length adjustment targetting in place, it is fixed to lock center tube and control tube through adjusting the locking piece.
10. The precast box girder end form demolition apparatus according to claim 1, wherein the tie bar (2) comprises:
one end of the first adjusting pipe is provided with a limiting hole, and the other end of the first adjusting pipe is connected with the reaction frame (1) through a detachable connecting structure;
one end of the second adjusting pipe is provided with a plurality of clamping holes which are arranged at intervals along the longitudinal direction of the pipe body and are linearly arranged, and the other end of the second adjusting pipe is connected with the box girder end mould (5) through a detachable connecting structure;
and the bolt is arranged in the limiting hole and is inserted into the clamping hole so as to drive the first adjusting pipe to move relative to the second adjusting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222282058.2U CN218504810U (en) | 2022-08-29 | 2022-08-29 | Prefabricated box girder end mould form removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222282058.2U CN218504810U (en) | 2022-08-29 | 2022-08-29 | Prefabricated box girder end mould form removal device |
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| Publication Number | Publication Date |
|---|---|
| CN218504810U true CN218504810U (en) | 2023-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222282058.2U Active CN218504810U (en) | 2022-08-29 | 2022-08-29 | Prefabricated box girder end mould form removal device |
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| Country | Link |
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| CN (1) | CN218504810U (en) |
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- 2022-08-29 CN CN202222282058.2U patent/CN218504810U/en active Active
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