Rainwater square ditch raft template structure

Abstract

The invention provides a rainwater square ditch raft template structure, which belongs to the technical field of square ditch raft pouring and comprises a guide wall mold, a plurality of fixing seats, a driving roller, a driving unit, an abutting unit and a positioning unit. The multiple fixing bases are arranged in the length direction of the guide wall mold and provided with fixing cavities allowing the top end of the guide wall mold to be inserted therein. The axial direction of the driving roller is parallel to the length direction of the guide wall mold, the driving roller penetrates through all the fixing bases, the driving roller is rotationally connected with the fixing bases, the driving roller rotates around the central axis of the driving roller, and the driving unit comprises two push-out pieces slidably connected to the fixing bases and a driving assembly in transmission connection between the driving roller and the push-out pieces; the two push-out pieces are oppositely arranged, and the sliding direction of the push-out pieces is perpendicular to the length direction of the guide wall mold. The abutting unit comprises abutting plates in one-to-one correspondence with the push-out pieces, and the abutting plates are fixedly connected to the push-out pieces. The positioning unit is connected to the driving roller and used for fixing the driving roller. The construction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the casting of the raft slab of a square culvert, and particularly relates to a formwork structure for the raft slab of a rainwater square culvert. Background Art

[0002] When casting the raft slab of a rainwater square culvert, it is necessary to synchronously cast the guide walls on both sides. The casting of the guide walls requires the assistance of guide wall molds. The guide wall molds are divided into an inner guide wall mold and an outer guide wall mold. After the guide wall molds are set up, concrete is poured into the top to form the guide walls.

[0003] During the casting process of the guide walls, in order to prevent the guide wall molds from bulging, it is generally necessary to set up support rods and fixing clamps. The fixing clamps are installed at the top of the guide wall molds and are used to tightly press the inner guide wall mold and the outer guide wall mold. A plurality of fixing clamps need to be set along the length direction of the guide walls.

[0004] Currently, the existing fixing clamps are generally of a split structure and need to be installed one by one by workers, which takes a long time and results in low work efficiency. Summary of the Invention

[0005] An embodiment of the present invention provides a formwork structure for the raft slab of a rainwater square culvert, aiming to solve the technical problem of low work efficiency caused by the long installation time of the fixing clamps.

[0006] To achieve the above object, the technical solution adopted by the present invention is: to provide a formwork structure for the raft slab of a rainwater square culvert, including: A guide wall mold; A plurality of fixing seats, which are arranged at intervals along the length direction of the guide wall mold, and the fixing seats are provided with fixing cavities for the top ends of the guide wall molds to be inserted into; A driving roller, the axial direction of which is parallel to the length direction of the guide wall mold, the driving roller penetrates through all the fixing seats, and the driving roller is rotatably connected to the fixing seats and rotates around its own central axis, A driving unit, including two pushing members slidably connected to the fixing seats and a driving assembly drivingly connected to the driving roller and the pushing members. The two pushing members are oppositely arranged on both sides of the guide wall mold, and the sliding direction of the pushing members is perpendicular to the length direction of the guide wall mold; A pressing unit, including pressing plates corresponding to the pushing members one by one, and the pressing plates are fixedly connected to the ends of the pushing members close to the guide wall mold; and A positioning unit, which is connected to the driving roller and is used to fix the driving roller.

[0007] In a possible implementation manner, the positioning unit is arranged in the driving cavity, and the positioning unit includes: A ratchet wheel, which is fixedly connected to the outer circumference of the driving roller; A ratchet pawl, rotatably connected to the inner wall of the driving cavity, the rotation axis of the ratchet pawl being parallel to the axis direction of the ratchet wheel, and the ratchet pawl being snap-fitted with the tooth grooves of the ratchet wheel; and A suction and push member, disposed in the tooth groove of the ratchet wheel, for fixing the ratchet pawl and the teeth of the ratchet wheel or for separating the ratchet pawl from the tooth groove of the ratchet wheel.

[0008] In a possible implementation manner, the positioning unit further includes: An air nozzle, forming the suction and push member; and A first blowing member, communicated with the air nozzle; Wherein, when the first blowing member starts to suck air to generate suction force, the ratchet pawl is fixed to the teeth of the ratchet wheel; when the first blowing member starts to blow air to generate thrust, the ratchet pawl is separated from the tooth groove of the ratchet wheel.

[0009] In a possible implementation manner, a compensation unit is provided on one side of the pressing plate facing the guide wall mold, and the compensation unit includes an airbag fixedly connected to the pressing plate and a second blowing member communicated with the airbag.

[0010] In a possible implementation manner, the driving roller includes: A starting rod, corresponding to the fixed seat one by one, the starting rod passing through the corresponding fixed seat; and A telescopic rod, fixedly connected between two adjacent starting rods, the telescopic rod telescoping along the length direction of the guide wall mold.

[0011] In a possible implementation manner, the opposite end faces of two adjacent starting rods are both recessed inward to form a telescopic cavity, the telescopic rod passes through two adjacent telescopic cavities, the telescopic rod is fixedly connected to the inner wall of the telescopic cavity, and a card slot is formed on the outer wall of the telescopic rod, and a plurality of card slots are arranged at intervals along the telescopic direction of the telescopic rod; A telescopic member, connected to the inner wall of the telescopic cavity, the telescopic direction of the telescopic member being perpendicular to the telescopic direction of the telescopic rod, and the telescopic member being inserted and matched with the card slot.

[0012] In a possible implementation manner, the telescopic member includes: An insertion block, inserted and matched with the card slot; An ejector, installed on the inner wall of the telescopic cavity, having a pulling force for pulling the insertion block out of the card slot; and An elastic member, fixedly connected between the inner wall of the telescopic cavity and the insertion block, the elastic member having a pre-tightening force for inserting the insertion block into the card slot.

[0013] In a possible implementation manner, the ejector is an electromagnet, and the insertion block is made of ferromagnetic material; The electromagnet is energized to generate suction force, causing the insertion block to disengage from the card slot; when the electromagnet is de-energized, the suction force disappears, and the elastic member releases elastic force to cause the insertion block to insert into the card slot.

[0014] In a possible implementation manner, a driving cavity is formed in the fixed seat, and the driving roller passes through each driving cavity; The driving assembly is arranged in the driving cavity, and the driving assembly includes: A transmission rod, the axis direction of which is perpendicular to the axis direction of the driving roller. The transmission rod is rotatably connected to the inner wall of the driving cavity, and the transmission rod rotates around its own central axis. The transmission rod is in transmission connection with the driving roller; and A push sleeve, which is rotatably connected to the inner wall of the driving cavity. The push sleeve rotates around its own central axis. The push sleeve is in transmission connection with the transmission rod, and the push sleeve is also in threaded connection with the push member.

[0015] In a possible implementation manner, a driving cavity is formed in the fixed seat, and the driving roller passes through each driving cavity; The driving assembly is arranged in the driving cavity, and the driving assembly includes: An extrusion block, which is fixedly connected to the outer wall of the driving roller; A first driving rod, which is slidably connected to the inner wall of the driving cavity. The sliding direction of the first driving rod is perpendicular to the axis direction of the driving roller, and the first driving rod abuts against the extrusion block; and A second driving rod, which is slidably connected to the inner wall of the driving cavity. The sliding direction of the second driving rod is perpendicular to the sliding direction of the first driving rod. The second driving rod abuts against the first driving rod, and the second driving rod also abuts against the push member.

[0016] Compared with the prior art, the rainwater square culvert raft slab formwork structure provided by the present invention embeds the fixed cavity into the top of the guide wall formwork to complete the preliminary positioning of the guide wall formwork. The construction worker rotates the driving roller, and the driving roller rotates to make the push members on both sides of the guide wall formwork slide towards each other through the driving assembly, thereby driving the abutting plates to tightly adhere to the outer side and the inner side of the guide wall formwork. Thus, a balanced clamping force is formed on the outer side and the inner side of the guide wall formwork. At the same time, the positioning unit locks the rotation angle of the driving roller, so that the guide wall formwork remains in a stable and tightly abutted state during the entire pouring process. The present invention realizes the rapid tightening and fixing on both sides of the guide wall formwork by the driving roller linking multiple fixed seats to move synchronously, without individual installation, improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the rainwater square culvert raft slab formwork structure according to an embodiment of the present invention; Figure 2This is a sectional view showing the internal structure of the fixed seat in the embodiment of the present invention; Figure 3 This is a sectional view showing the guiding manner of the pushing member in the embodiment of the present invention; Figure 4 This is a sectional view of the driving roller adopted in the embodiment of the present invention; Figure 5 is Figure 4 a partial enlarged schematic view of part A in Figure 6 This is a partial sectional view showing another driving assembly in the embodiment of the present invention; Figure 7 This is a partial schematic view of the positioning unit adopted in the embodiment of the present invention.

[0018] Explanation of reference numerals: 10, guide wall mold; 20, fixed seat; 201, fixed cavity; 202, driving cavity; 203, guide rod; 30, driving roller; 301, starting rod; 3011, telescopic cavity; 302, telescopic rod; 3021, end rod; 3022, middle rod; 30221, card slot; 303, elastic member; 304, insertion block; 40, driving unit; 401, pushing member; 4011, guiding cavity; 402, transmission rod; 403, pushing sleeve; 404, first driving rod; 405, second driving rod; 406, extrusion block; 50, pressing unit; 501, pressing plate; 502, airbag; 60, positioning unit; 601, ratchet; 602, pawl; 603, air nozzle. Detailed implementation manners

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0020] Please refer to Figures 1 to 7, the raft slab formwork structure of the rainwater square culvert of the present invention will be described. A raft slab formwork structure for a rainwater square culvert includes a guide wall mold 10, a plurality of fixing seats 20, driving rollers 30, a driving unit 40, a pressing unit 50, and a positioning unit 60. The plurality of fixing seats 20 are arranged at intervals along the length direction of the guide wall mold 10. The fixing seat 20 is provided with a fixing cavity 201 for inserting the top end of the guide wall mold 10; the axial direction of the driving roller 30 is parallel to the length direction of the guide wall mold 10. The driving roller 30 penetrates through all the fixing seats 20, and the driving roller 30 is rotatably connected to the fixing seat 20, and the driving roller 30 rotates around its own central axis; the driving unit 40 includes two pushing members 401 slidably connected to the fixing seat 20 and a driving assembly drivingly connected to the driving roller 30 and the pushing member 401. The two pushing members 401 are oppositely arranged on both sides of the guide wall mold 10, and the sliding direction of the pushing member 401 is perpendicular to the length direction of the guide wall mold 10; the pressing unit 50 includes pressing plates 501 corresponding to the pushing members 401 one by one, and the pressing plates 501 are fixedly connected to one end of the pushing member 401 close to the guide wall mold 10; the positioning unit 60 is connected to the driving roller 30 for fixing the driving roller 30.

[0021] It should be noted that the guide wall mold 10 is a prior art and will not be elaborated in this application.

[0022] Compared with the prior art, the raft slab formwork structure of the rainwater square culvert provided by the present invention embeds the fixing cavity 201 into the top of the guide wall mold 10 to complete the preliminary positioning of the guide wall mold 10. The construction worker rotates the driving roller 30, and the rotation of the driving roller 30 causes the pushing members 401 on both sides of the guide wall mold 10 to slide towards each other through the driving assembly, thereby driving the pressing plates 501 to closely adhere to the outer and inner sides of the guide wall mold 10. Thus, a balanced clamping force is formed on the outer and inner sides of the guide wall mold 10. At the same time, the positioning unit 60 locks the rotation angle of the driving roller 30, so that the guide wall mold 10 remains in a stable and clamped state during the entire pouring process. The present invention realizes the quick clamping and fixing on both sides of the guide wall mold 10 by the driving roller 30 linking multiple fixing seats 20 to move synchronously, without individual installation, improving the construction efficiency.

[0023] In some embodiments, referring to Figure 7 , the positioning unit 60 is arranged in the driving cavity 202. The positioning unit 60 includes a ratchet wheel 601, a ratchet pawl 602, and a suction and push member; the ratchet wheel 601 is fixedly connected to the outer circumference of the driving roller 30; the ratchet pawl 602 is rotatably connected to the inner wall of the driving cavity 202, the rotation axis of the ratchet pawl 602 is parallel to the axis direction of the ratchet wheel 601, and the ratchet pawl 602 is engaged with the tooth groove of the ratchet wheel 601; the suction and push member is arranged in the tooth groove of the ratchet wheel 601 for fixing the tooth teeth of the ratchet pawl 602 and the ratchet wheel 601 or for separating the ratchet pawl 602 from the tooth groove of the ratchet wheel 601.

[0024] By setting the ratchet wheel 601 and the pawl 602, the driving roller 30 is allowed to rotate unidirectionally. After the driving roller 30 is rotated to a preset angle, the suction and pushing member is activated to fix the pawl 602 in the tooth groove of the ratchet wheel 601; when the driving roller 30 needs to be rotated back, the suction and pushing member is activated to push the pawl 602 out of the tooth groove of the ratchet wheel 601, so that the pawl 602 is disengaged from the ratchet wheel 601, and the locking of the driving roller 30 is released. Under the action of its own weight and the suction force of the suction and pushing member, the pawl 602 is fixed in the tooth groove of the ratchet wheel 601, thus forming a double lock to ensure the stability of the driving roller 30 when it is stationary, and thereby ensuring the stability of the clamping of the guide wall mold 10 by the pressing plate 501.

[0025] In some embodiments, referring to Figure 7 , the positioning unit 60 further includes an air nozzle 603 and a first blowing member; the air nozzle 603 forms the suction and pushing member; the first blowing member is communicated with the air nozzle 603.

[0026] Wherein, when the first blowing member is activated to suck air to generate a suction force, the pawl 602 is fixed to the teeth of the ratchet wheel 601; when the first blowing member is activated to blow air to generate a thrust force, the pawl 602 is disengaged from the tooth groove of the ratchet wheel 601.

[0027] It should be noted that the first blowing member is an air pump.

[0028] After the driving roller 30 is rotated to a preset angle, the first blowing member is activated to suck air to generate a suction force, and a negative pressure area is formed in the tooth groove of the ratchet wheel 601 through the air nozzle 603. At this time, the pawl 602 not only relies on its own weight to be embedded in the tooth groove, but is also closely attached to the tooth groove wall surface by the adsorption force generated by the air nozzle 603, forming a double lock of mechanical contact and pneumatic adsorption.

[0029] Another variant embodiment of the suction and pushing member is that the suction and pushing member is an electromagnetic assembly, the pawl 602 is made of ferromagnetic material, and when the suction and pushing member is energized, an attractive force is generated on the pawl 602, so that the pawl 602 is fixed in the tooth groove of the ratchet wheel 601, and when the suction and pushing member is energized, a repulsive force is generated on the pawl 602, so that the pawl 602 is disengaged from the tooth groove of the ratchet wheel 601.

[0030] In some embodiments, referring to Figure 6 , a compensation unit is provided on one side of the pressing plate 501 facing the guide wall mold 10. The compensation unit includes an airbag 502 fixed to the pressing plate 501 and a second blowing member communicated with the airbag 502.

[0031] It should be noted that the second blowing member is an air pump.

[0032] After the driving roller 30 is rotated to a preset angle, the second air blowing member starts to blow air into the airbag 502, so that the airbag 502 expands and presses against the guide wall mold 10; when the driving roller 30 needs to be rotated back, the second air blowing member sucks out the gas in the airbag 502, and the airbag 502 returns to its original state. On the basis that the rotation angle of the driving roller 30 is limited by the tooth pitch of the ratchet 601 to generate a discrete pressing displacement, the continuous deformation ability of the airbag 502 is used to realize stepless fine adjustment of the pressing force, which not only retains the reliability of mechanical locking but also breaks through the limitation of segmented adjustment for fine pressure control.

[0033] In some embodiments, referring to Figure 4 , the driving roller 30 includes a starting rod 301 and a telescopic rod 302; the starting rods 301 correspond to the fixed seats 20 one by one, and the starting rod 301 passes through the corresponding fixed seat 20; the telescopic rod 302 is fixedly connected between two adjacent starting rods 301, and the telescopic rod 302 expands and contracts along the length direction of the guide wall mold 10.

[0034] It should be noted that the telescopic rod 302 has a multi-stage telescopic structure.

[0035] The construction worker can pull two adjacent fixed seats 20 to change the distance between the two adjacent fixed seats 20, that is, change the overall length of the device to adapt to guide wall molds 10 of different lengths, and can also change the distance between two adjacent fixed seats 20, so as to change the distance between two adjacent clamping points, thereby adapting to different construction requirements.

[0036] In some embodiments, referring to Figure 4 and Figure 5 , the opposite end faces of two adjacent starting rods 301 are both recessed inward to form a telescopic cavity 3011, the telescopic rod 302 passes through the two adjacent telescopic cavities 3011, the telescopic rod 302 is fixedly connected to the inner wall of the telescopic cavity 3011, and a clamping groove 30221 is formed on the outer wall of the telescopic rod 302; a plurality of clamping grooves 30221 are arranged at intervals along the telescopic direction of the telescopic rod 302; the telescopic member is connected to the inner wall of the telescopic cavity 3011, the telescopic direction of the telescopic member is perpendicular to the telescopic direction of the telescopic rod 302, and the telescopic member is inserted and adapted to the clamping groove 30221.

[0037] It should be noted that the telescopic rod 302 includes two end rods 3021 and an intermediate rod 3022 slidably connected between the two end rods 3021, and the clamping groove 30221 is formed on the intermediate rod 3022.

[0038] After the distance between two adjacent fixed seats 20 is stretched to a preset length, the telescopic member starts to extend into the clamping groove 30221, so that the length of the telescopic rod 302 is fixed, thereby fixing the distance between two adjacent fixed seats 20, ensuring the torsional stiffness of the driving roller 30 and the fixed seat 20, and thus ensuring the stability when pressing against the guide wall mold 10.

[0039] In some embodiments, see Figure 5 The telescopic part includes an ejector, an insert block 304 and an elastic part 303; the insert block 304 is plugged into and adapted to the card slot 30221; the ejector is installed on the inner wall of the telescopic cavity 3011 and has a pulling force to pull the insert block 304 out of the card slot 30221; the elastic part 303 is fixed between the inner wall of the telescopic cavity 3011 and the insert block 304, and the elastic part 303 has a pre-tightening force that allows the insert block 304 to be inserted into the card slot 30221.

[0040] After the spacing between two adjacent fixing seats 20 is stretched to a preset length, the pre-tightening force of the elastic member 303 drives the insert block 304 to fit into the slot 30221 to form a rigid mechanical interlock, thereby fixing the length of the telescopic rod 302. At this time, the torque of the driving roller 30 is transmitted through the shear contact surface between the insert block 304 and the slot 30221, ensuring that the transmission does not cause accidental displacement; when it is necessary to adjust the spacing between the two adjacent fixing seats 20, the ejector starts to pull the insert block 304, so that the insert block 304 is disengaged from the slot 30221. At this time, the length of the telescopic rod 302 can be freely adjusted.

[0041] It should be noted that the elastic member 303 is a spring rod.

[0042] In some embodiments, the ejector is an electromagnet, and the insert 304 is made of ferromagnetic material; when the electromagnet is energized, it generates suction, causing the insert 304 to detach from the slot 30221; when the electromagnet is de-energized, the suction disappears, and the elastic member 303 releases the elastic force, causing the insert 304 to be inserted into the slot 30221.

[0043] When the distance between two adjacent fixing seats 20 needs to be adjusted, the strong magnetic field generated by the electromagnet at the moment of power-on attracts the ferromagnetic material plug-in block 304 to overcome the elastic pre-tightening force and detach from the slot 30221. Once the electromagnet is powered off, the magnetic field disappears and the elastic member 303 immediately drives the plug-in block 304 to reset and embed into the slot 30221, restoring the rigid locking state.

[0044] In some embodiments, see Figure 2 and Figure 3 A driving cavity 202 is provided in the fixed seat 20, and the driving roller 30 passes through each driving cavity 202; the driving assembly is arranged in the driving cavity 202, and the driving assembly includes a transmission rod 402 and an ejection sleeve 403; the axial direction of the transmission rod 402 is perpendicular to the axial direction of the driving roller 30, the transmission rod 402 is rotatably connected to the inner wall of the driving cavity 202, the transmission rod 402 rotates around its own central axis, and the transmission rod 402 and the driving roller 30 are transmission-connected; the ejection sleeve 403 is rotatably connected to the inner wall of the driving cavity 202, the ejection sleeve 403 rotates around its own central axis, the ejection sleeve 403 is transmission-connected to the transmission rod 402, and the ejection sleeve 403 is also threadedly connected to the ejection member 401.

[0045] Specifically, a guide rod 203 is fixedly connected to the inner wall of the driving cavity 202, and a guide cavity 4011 adapted to slide with the guide rod 203 is provided in the pushing member 401.

[0046] It should be noted that the transmission rod 402 and the pushing sleeve 403 are connected by a spur gear set, and the driving roller 30 and the transmission rod 402 are connected by a bevel gear set.

[0047] When the construction worker rotates the driving roller 30, the driving roller 30 drives the transmission rod 402 to rotate through the bevel gear set, and the transmission rod 402 then drives the pushing sleeve 403 to rotate through the spur gear set. The trapezoidal thread on the inner wall of the pushing sleeve 403 and the guide groove on the outer periphery of the pushing member 401 form a screw pair, converting the rotational motion into the linear advancement of the pushing member 401, thereby driving the pressing plate 501 to move towards the guide wall mold 10. Through the integrated design of the spur gear set, bevel gear set and screw advancement, the rotational motion of the driving roller 30 is converted into the synchronous linear displacement of multiple pushing members 401. While the guide wall mold 10 is tightened, a self-locking transmission chain is constructed to resist the reverse impact force during the concrete pouring process.

[0048] In some embodiments, referring to Figure 6 , a driving cavity 202 is provided in the fixed seat 20, and the driving roller 30 passes through each driving cavity 202; a driving assembly is arranged in the driving cavity 202, and the driving assembly includes an extrusion block 406, a first driving rod 404 and a second driving rod 405; the extrusion block 406 is fixedly connected to the outer wall of the driving roller 30; the first driving rod 404 is slidably connected to the inner wall of the driving cavity 202, the sliding direction of the first driving rod 404 is perpendicular to the axial direction of the driving roller 30, and the first driving rod 404 abuts against the extrusion block 406; the second driving rod 405 is slidably connected to the inner wall of the driving cavity 202, the sliding direction of the second driving rod 405 is perpendicular to the sliding direction of the first driving rod 404, the second driving rod 405 abuts against the first driving rod 404, and the second driving rod 405 also abuts against the pushing member 401.

[0049] When the construction worker rotates the driving roller 30, the extrusion block 406 squeezes the inclined surface on the first driving rod 404, forcing the first driving rod 404 to move laterally in a direction perpendicular to the axial direction of the driving roller 30. When the first driving rod 404 moves laterally, it squeezes the inclined surface of the second driving rod 405, forcing the second driving rod 405 to move longitudinally in a direction perpendicular to the axial direction of the first driving rod 404, and finally driving the pushing member 401 to push out the pressing plate 501 towards the guide wall mold 10. Through the combined action of inclined surface pushing and lever transmission, the rotational kinetic energy of the driving roller 30 is directly converted into multi-directional linear thrust, constructing a pure mechanical power transmission system without gear intervention.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A formwork structure for the raft slab of a rectangular stormwater culvert, including a guide wall mold, characterized in that, Further comprising: A plurality of fixed seats, which are arranged at intervals along the length direction of the guide wall mold, and the fixed seats are provided with fixed cavities for inserting the top ends of the guide wall mold; Drive rollers, the axial direction of which is parallel to the length direction of the guide wall mold, the drive rollers penetrate through all the fixed seats, the drive rollers are rotatably connected to the fixed seats, and the drive rollers rotate around their own central axes; A drive unit, which includes two ejecting members slidably connected to the fixed seats and a drive assembly drivingly connected between the drive rollers and the ejecting members, the two ejecting members are oppositely arranged on both sides of the guide wall mold, and the sliding direction of the ejecting members is perpendicular to the length direction of the guide wall mold; A pressing unit, which includes pressing plates corresponding to the ejecting members one by one, and the pressing plates are fixedly connected to one ends of the ejecting members close to the guide wall mold; And A positioning unit, which is connected to the drive roller and is used for fixing the drive roller.

2. The rainwater square culvert raft slab formwork structure according to claim 1, characterized in that, The positioning unit is arranged in the drive cavity, and the positioning unit includes: A ratchet wheel, which is fixedly connected to the outer periphery of the drive roller; A ratchet pawl, which is rotatably connected to the inner wall of the drive cavity, the rotation axis of the ratchet pawl is parallel to the axis direction of the ratchet wheel, and the ratchet pawl is engaged and adapted with the tooth grooves of the ratchet wheel; and A suction and push member, which is arranged in the tooth grooves of the ratchet wheel and is used for fixing the ratchet pawl and the teeth of the ratchet wheel or for separating the ratchet pawl from the tooth grooves of the ratchet wheel.

3. The rainwater square culvert raft slab formwork structure according to any one of claims 2, characterized in that, The positioning unit further includes: An air nozzle, which forms the suction and push member; and A first air blowing member, which is communicated with the air nozzle; Wherein, when the first air blowing member starts to suck air to generate suction force, the ratchet pawl is fixed to the teeth of the ratchet wheel; when the first air blowing member starts to blow air to generate thrust, the ratchet pawl is separated from the tooth grooves of the ratchet wheel.

4. The rainwater square culvert raft slab formwork structure according to claim 2, characterized in that, A compensation unit is arranged on the side of the pressing plate facing the guide wall mold, and the compensation unit includes an air bag fixedly connected to the pressing plate and a second air blowing member communicated with the air bag.

5. The rainwater square culvert raft slab formwork structure according to claim 1, characterized in that, The drive roller includes: Starting rods, corresponding to the fixed seats one by one, the starting rods penetrate through the corresponding fixed seats; and A telescopic rod, which is fixedly connected between two adjacent starting rods, and the telescopic rod expands and contracts along the length direction of the guide wall mold.

6. The rainwater square culvert raft slab formwork structure according to claim 5, characterized in that, The opposite end faces of two adjacent starting rods are both recessed inward to form telescopic cavities, the telescopic rod penetrates through the two adjacent telescopic cavities, the telescopic rod is fixedly connected to the inner wall of the telescopic cavity, and a card slot is arranged on the outer wall of the telescopic rod, and a plurality of card slots are arranged at intervals along the telescopic direction of the telescopic rod; A telescopic member, which is connected to the inner wall of the telescopic cavity, the telescopic direction of the telescopic member is perpendicular to the telescopic direction of the telescopic rod, and the telescopic member is inserted and adapted with the card slot.

7. The rainwater square culvert raft slab formwork structure according to claim 6, wherein, The telescopic member includes: An insertion block, which is inserted and adapted with the card slot; An ejector, which is installed on the inner wall of the telescopic cavity and has a pulling force for pulling the insertion block out of the card slot; and An elastic member, which is fixedly connected between the inner wall of the telescopic cavity and the insertion block, and the elastic member has a pre-tightening force for making the insertion block insert into the card slot.

8. The rainwater square culvert raft slab formwork structure according to claim 7, characterized in that, The ejector is an electromagnet, and the insertion block is made of ferromagnetic material; The electromagnet is energized to generate a suction force, causing the insertion block to disengage from the card slot; when the electromagnet is de-energized, the suction force disappears, and the elastic member releases elastic force to cause the insertion block to insert into the card slot.

9. The rainwater square culvert raft slab formwork structure according to claim 1, characterized in that A driving cavity is formed in the fixed seat, and the driving roller passes through each driving cavity; The driving assembly is arranged in the driving cavity, and the driving assembly includes: A transmission rod, the axis direction of which is perpendicular to the axis direction of the driving roller. The transmission rod is rotatably connected to the inner wall of the driving cavity, the transmission rod rotates around its own central axis, and the transmission rod is in transmission connection with the driving roller; And A pushing sleeve, which is rotatably connected to the inner wall of the driving cavity, the pushing sleeve rotates around its own central axis, the pushing sleeve is in transmission connection with the transmission rod, and the pushing sleeve is also in threaded connection with the pushing member.

10. The rainwater square culvert raft slab formwork structure according to claim 1, characterized in that, A driving cavity is formed in the fixed seat, and the driving roller passes through each driving cavity; The driving assembly is arranged in the driving cavity, and the driving assembly includes: A pressing block, fixedly connected to the outer wall of the driving roller; A first driving rod, slidably connected to the inner wall of the driving cavity, the sliding direction of the first driving rod is perpendicular to the axis direction of the driving roller, and the first driving rod abuts against the pressing block; and A second driving rod, slidably connected to the inner wall of the driving cavity, the sliding direction of the second driving rod is perpendicular to the sliding direction of the first driving rod, the second driving rod abuts against the first driving rod, and the second driving rod also abuts against the pushing member.

Images