Self-propelled double-internal-mold hydraulic box culvert pouring trolley

Abstract

The invention relates to the technical field of box culvert pouring trolleys, in particular to a self-propelled double-inner-mold hydraulic box culvert pouring trolley which comprises two sets of inner molds and further comprises a trolley body, and a double-shaft driving motor is installed on the trolley body. The spline housing is fixedly mounted on an output shaft of the double-shaft driving motor; the spline shaft is elastically and slidably mounted in the spline sleeve; the fixing mechanism is arranged in the inner mold and comprises supporting frames which are symmetrically and fixedly installed in the inner mold. Through the design of the spline shaft and the T-shaped sleeve, when the position of the inner mold needs to be fixed, the spline shaft is clamped into the spline groove of the T-shaped sleeve, so that the spline shaft drives the T-shaped sleeve to rotate, the position of the supporting frame is fixed, the supporting frame can provide support for the inner mold, the position of the inner mold is fixed, and after the fixing work of the inner mold is completed, the inner mold is fixed. The spline shaft is controlled to be separated from the spline groove of the T-shaped sleeve, and the vehicle body can provide movement or fixing work for the other inner mold.

Description

Technical Field

[0001] This invention relates to the field of box culvert casting trolley technology, and in particular to a self-propelled double-internal-mold hydraulic box culvert casting trolley. Background Technology

[0002] As a highly efficient and convenient engineering equipment, the box culvert casting trolley plays an indispensable role in modern engineering construction. In actual engineering projects, the box culvert casting trolley is widely used in bridge, tunnel and other construction projects. Its convenient operation and stable performance make the construction process more efficient and safe. Especially in complex construction environments, the box culvert casting trolley can significantly improve the project progress and reduce the construction difficulty.

[0003] In the existing technology, the inner formwork and the vehicle body of the box culvert casting trolley are an integrated structure. During construction, multiple box culvert casting trolleys need to be spliced ​​together. During casting, the position of the inner formwork is fixed and the vehicle body is idle. If a self-propelled vehicle body is used, each inner formwork needs to be equipped with a self-propelled vehicle body, which leads to high construction costs. Therefore, the vehicle body is usually pushed by workers, which results in slow construction progress and workers are prone to injury. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a self-propelled double-internal-mold hydraulic box culvert casting trolley.

[0005] The technical solution of this invention: A self-propelled double-internal-mold hydraulic box culvert casting trolley, comprising two sets of internal molds, and further comprising: The vehicle body is equipped with a dual-shaft drive motor. Spline sleeve, fixedly installed on the output shaft of dual-axis drive motor; The spline shaft is flexibly and slidingly installed inside the spline sleeve; A fixing mechanism is set inside the inner mold. The fixing mechanism includes a support frame, which is symmetrically fixed inside the inner mold. The T-shaped sleeve is rotatably installed inside the support frame, and a spline groove is opened on it to mate with the spline shaft; The support frame is equipped with a disengagement mechanism to automatically disengage the spline shaft from the spline groove of the T-sleeve. The exit mechanism includes a threaded sleeve that is slidably mounted on a T-shaped sleeve, and a movable block that is elastically slidably mounted inside the support frame. The movable block has a threaded groove that matches the threaded sleeve. The withdrawal mechanism also includes a withdrawal rod that is fixedly connected by multiple connecting rods and screw sleeves. The withdrawal rod is slidably installed in the T-shaped sleeve. A first tension spring is provided between the withdrawal rod and the T-shaped sleeve. A guide groove is provided through the T-shaped sleeve, and multiple connecting rods are located in the guide groove. The exit mechanism also includes brackets that are symmetrically fixedly installed on the vehicle body. Push rods are symmetrically slidably installed inside the brackets. A second tension spring is provided between the push rods and the brackets. A lever that works with the push rods is fixedly installed on the movable block. A first sliding groove that works with the lever is provided on the support frame.

[0006] In a preferred embodiment of the present invention, the fixing mechanism further includes a wedge-shaped platform symmetrically fixedly mounted on the support frame, the wedge-shaped platform being used in conjunction with the spline shaft.

[0007] In a preferred embodiment of the present invention, the fixing mechanism further includes a drive assembly installed in the support frame, a T-shaped sleeve connected to the drive assembly, a telescopic shaft symmetrically and rotatably installed in the support frame, the telescopic shaft connected to the drive assembly, a lead screw threadedly connected to the support frame fixedly installed at the telescopic end of the telescopic shaft, and a support foot rotatably installed at the bottom of the lead screw.

[0008] In a preferred embodiment of the present invention, a first electromagnet is also included, which is installed in one of the brackets, and a magnetic plate is fixedly installed on the push rod.

[0009] In a preferred embodiment of the invention, a second electromagnet is also included, which is mounted in another bracket.

[0010] In a preferred embodiment of the present invention, two sets of support rods are symmetrically fixedly installed on the vehicle body, and support plates that cooperate with the support rods are symmetrically installed on the support frame.

[0011] Compared with the prior art, the present invention has the following advantages: 1. This invention fixes the position of the support frame by inserting the spline shaft into the spline groove of the T-shaped sleeve, which drives the T-shaped sleeve to rotate. The support frame provides support for the inner mold. After the position of the inner mold is fixed, the spline shaft is controlled to disengage from the spline groove of the T-shaped sleeve, and the car body can provide movement or fixation for another inner mold.

[0012] 2. Through the design of the movable block and the screw sleeve, this invention ensures that when the support foot needs to be away from the ground, the movable block does not contact the screw sleeve, and the rotation of the T-shaped sleeve will not cause the exit rod to push the spline shaft, thereby allowing the support foot to move away from the ground and the inner mold to move synchronously with the vehicle body; when the support foot needs to contact the ground, the push rod squeezes the lever, causing the thread groove of the movable block to engage with the screw sleeve, and the rotation of the T-shaped sleeve causes the exit rod to push the spline shaft, thereby simultaneously achieving the reset of the support foot and the exit of the spline shaft from the spline groove of the T-shaped sleeve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation of the support frame in this invention; Figure 3 This is a schematic diagram of the installation at the spline shaft in this invention; Figure 4 This is a schematic diagram of the fixing mechanism in this invention; Figure 5 This is a schematic diagram of the installation of the threaded sleeve in this invention; Figure 6 This is a schematic diagram of the installation at the movable block in this invention; Figure 7 This is a schematic diagram of the installation of the push rod in this invention; Figure 8 This is a schematic diagram of the installation of the second electromagnet in this invention; Figure 9 This is a schematic diagram of the installation of the support rod in this invention.

[0014] In the diagram: 1. Inner mold; 201. Car body; 202. Dual-shaft drive motor; 203. Spline sleeve; 204. Spline shaft; 205. Support frame; 206. T-shaped sleeve; 207. Wedge platform; 301. Drive assembly; 302. Telescopic shaft; 303. Lead screw; 304. Support leg; 401. Screw sleeve; 402. Movable block; 501. Exit rod; 601. Bracket; 602. Push rod; 603. Lever; 701. First electromagnet; 801. Second electromagnet; 901. Support rod; 902. Support plate. Detailed Implementation

[0015] Although the invention may be described with respect to specific applications or industries, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0016] like Figures 1-4 As shown, a self-propelled double-mold hydraulic box culvert casting trolley includes two sets of inner molds 1 symmetrically arranged front and rear, and a vehicle body 201. A dual-shaft drive motor 202 is installed on the vehicle body 201. A spline sleeve 203 is fixedly installed on the output shaft of the dual-shaft drive motor 202. A spline shaft 204 is elastically slidably installed inside the spline sleeve 203 along the left and right direction. A fixing mechanism is provided inside the inner mold 1 to provide support for the inner mold 1. The fixing mechanism includes a support frame 205 symmetrically fixedly installed inside the inner mold 1. A T-shaped sleeve 206 is rotatably installed inside the support frame 205. A spline groove that mates with the spline shaft 204 is opened at one end of the T-shaped sleeve 206 near the spline shaft 204.

[0017] like Figure 4As shown, the fixing mechanism also includes a wedge-shaped platform 207 symmetrically fixedly installed on one side of the support frame 205. The wedge-shaped platform 207 is used in conjunction with the spline shaft 204. Through the contact between the wedge-shaped platform 207 and the spline shaft 204, the spline shaft 204 can be elastically contracted and slid.

[0018] like Figure 4 As shown, the fixing mechanism also includes a drive assembly 301 installed in the support frame 205. The drive assembly 301 consists of a first bevel gear, a transmission shaft, and a second bevel gear. The first bevel gear is fixedly installed at the end of the T-shaped sleeve 206. The transmission shaft is rotatably installed in the support frame 205 and meshes with the first bevel gear. A telescopic shaft 302 is symmetrically rotatably installed in the support frame 205. The second bevel gear in the drive assembly 301 is fixedly connected to the fixed end of the telescopic shaft 302 and meshes with the transmission shaft. A lead screw 303 threadedly connected to the support frame 205 is fixedly installed at the telescopic end of the telescopic shaft 302. A support leg 304 is rotatably installed at the bottom of the lead screw 303. When the T-shaped sleeve 206 rotates, the lead screw 303 drives the support leg 304 to move up and down.

[0019] To improve the efficiency of fixing the inner mold 1 and reduce manual operation steps, such as Figures 4-6 As shown, a disengagement mechanism is provided inside the support frame 205 to automatically disengage the spline shaft 204 from the spline groove of the T-sleeve 206. The disengagement mechanism includes a threaded sleeve 401 that is slidably mounted on the T-sleeve 206. The threaded sleeve 401 can slide along the axial direction of the T-sleeve 206. A movable block 402 is elastically slidably mounted in the support frame 205 in the horizontal direction. The movable block 402 has a threaded groove that matches the threaded sleeve 401.

[0020] like Figure 5 and Figure 6 As shown, the withdrawal mechanism also includes a withdrawal rod 501 fixedly connected to the screw sleeve 401 via four connecting rods. The withdrawal rod 501 is slidably installed inside the T-shaped sleeve 206. A first tension spring is provided between the withdrawal rod 501 and the inner wall of the T-shaped sleeve 206. A guide groove is provided through the T-shaped sleeve 206, and all four connecting rods are located in the guide groove. When the threaded groove of the movable block 402 engages with the screw sleeve 401, the withdrawal rod 501 can push the spline shaft 204.

[0021] like Figures 6-8 As shown, the exit mechanism also includes a bracket 601 symmetrically fixedly installed on the vehicle body 201. A push rod 602 is symmetrically slidably installed in the bracket 601 along the horizontal direction. A second tension spring is provided between the push rod 602 and the bracket 601. The second tension spring is sleeved on the outer wall of the push rod 602. A lever 603 that cooperates with the push rod 602 is fixedly installed on the movable block 402. A first sliding groove that cooperates with the lever 603 is opened on the support frame 205. When the push rod 602 contacts the lever 603, the movable block 402 slides towards the side closer to the screw sleeve 401.

[0022] like Figure 8 As shown, it also includes a first electromagnet 701 installed in the rear bracket 601, and a magnetic plate is fixedly installed on the push rod 602. The first electromagnet 701 causes the two push rods 602 on the rear side to slide away from each other through the magnetic plate.

[0023] like Figure 8 As shown, it also includes a second electromagnet 801 installed in the front bracket 601. The second electromagnet 801 causes the two push rods 602 on the front side to slide away from each other through a magnetic plate.

[0024] like Figure 9 As shown, it also includes two sets of support rods 901 symmetrically fixed on the vehicle body 201, with two rods in each set. Support plates 902 that cooperate with the support rods 901 are symmetrically installed on the front and rear sides of the support frame 205. The support rods 901 and the support plates 902 cooperate to drive the inner mold 1 to move through the support frame 205.

[0025] Initially, the splined shaft 204 extends out of the corresponding splined sleeve 203, and the telescopic end of the telescopic shaft 302 is in an extended state. First, the vehicle body 201 is placed in the construction position, and then the two sets of inner molds 1 are placed in the construction position, with the vehicle body 201 positioned between the two sets of inner molds 1. At this time, the expansion of the two inner molds 1 is controlled (the expansion of the inner mold 1 is driven by its internal hydraulic system, which is existing technology). Then, concrete is poured onto the front inner mold 1. After the pouring of the front inner mold 1 is completed, the above steps are repeated to pour the rear inner mold 1. After the concrete on the front inner mold 1 solidifies, the front inner mold 1 is controlled to retract, and at the same time, the drive wheels on the vehicle body 201 are controlled to move forward (the drive wheels are existing technology and will not be described in detail here). Subsequently, the two splined shafts 204 and the front inner mold 1 are aligned. When the rear wedge-shaped platform 207 of the support frame 205 contacts, the spline shaft 204 elastically contracts and slides under the action of the wedge-shaped platform 207 until the spline shaft 204 contacts the vertical surface of the symmetrical wedge-shaped platform 207. The spline shaft 204 is completely retracted into the spline sleeve 203, and the car body 201 continues to move, thereby causing the spline shaft 204 to continue to move. Subsequently, the spline shaft 204 aligns with the spline groove of the T-shaped sleeve 206, and the spline shaft 204 elastically releases and slides into the spline groove. At this time, the tops of the two sets of support rods 901 contact the bottoms of the corresponding support plates 902, controlling the output shaft of the dual-shaft drive motor 202 to rotate. The output shaft of the dual-shaft drive motor 202 drives the two spline shafts 204 to rotate through the two spline sleeves 203. The spline shafts 204 drive the T-shaped sleeve 206 to rotate. The sleeve 206 drives the threaded sleeve 401 to rotate, which in turn drives the first bevel gear in the drive assembly 301 to rotate. The first bevel gear drives two second bevel gears to rotate via the transmission shaft. The second bevel gears drive the lead screw 303 to rotate via the telescopic shaft 302. The lead screw 303 drives the support leg 304 to rise. The telescopic end of the telescopic shaft 302 retracts, and the support leg 304 is no longer in contact with the ground after it is raised. At this time, the vehicle body 201 provides support for the inner mold 1 through two sets of support rods 901, support plates 902 and support frame 205. Then, the vehicle body 201 is controlled to move forward one distance of the inner mold 1, thereby making the inner mold 1 on the front side move forward synchronously. After the vehicle body 201 completes the movement, the first electromagnet 701 is activated. The first electromagnet 701 applies a repulsive force to the magnetic plate on the adjacent push rod 602. The magnetic plate, under force, causes the push rod 602 to slide closer to the lever 603. The second tension spring extends under force. After sliding, the push rod 602 contacts and presses against the lever 603. The lever 603, under force, causes the movable block 402 to extend and slide elastically until the push rod 602 stops moving. At this time, the threaded groove of the movable block 402 engages with the threaded sleeve 401. Then, the output shaft of the dual-axis drive motor 202 is reversed, causing the T-shaped sleeve 206 to drive the threaded sleeve 401 and the first bevel gear in the drive assembly 301 to reverse. The first bevel gear drives the transmission shaft to rotate, which in turn drives the lead screw 303 to reverse. The lead screw 303 drives the support leg 304 to descend, and the telescopic end of the telescopic shaft 302 extends. At this time, the threaded sleeve 401 slides along the T-shaped sleeve 206 under the action of the threaded groove of the movable block 402.The four connecting rods drive the exit rod 501 to slide in the T-shaped sleeve 206. When the exit rod 501 slides, it pushes the spline shaft 204 to elastically contract and slide until the lead screw 303 drives the support leg 304 to descend and reset. The support leg 304 contacts the ground. At this time, the end of the exit rod 501 away from the screw sleeve 401 is on the same vertical plane as the end of the T-shaped sleeve 206, so that the spline shaft 204 is completely disengaged from the spline groove of the T-shaped sleeve 206. Thus, the support leg 304 resets and the spline shaft 204 exits the spline groove of the T-shaped sleeve 206. At this time, the support frame 205 provides support for the inner mold 1 and controls the car body 201 to move backward, so that the spline shaft 204, push rod 602 and support rod 901 move backward. After the spline shaft 204 moves, it contacts the T-shaped sleeve 206. When push rod 602 moves, movable block 402 elastically contracts and slides, causing lever 603 to move synchronously with push rod 602. After support rod 901 moves, it no longer contacts support plate 902. Subsequently, movable block 402 no longer contacts screw sleeve 401. First tension spring contracts, causing release lever 501 to slide back to its original position. Release lever 501 drives screw sleeve 401 to slide back to its original position via four connecting rods until movable block 402 is fully elastically contracted and slides back to its original position. Lever 603 stops moving, push rod 602 continues to move and moves away from lever 603. Then, first electromagnet 701 is closed. First electromagnet 701 no longer applies repulsive force to the magnetic plate on push rod 602. Second tension spring contracts, causing push rod 602 to slide back to its original position.

[0026] After the concrete on the rear inner mold 1 solidifies, the vehicle body 201 is moved backward. The two spline shafts 204 contact the front wedge-shaped platform 207 of the support frame 205 corresponding to the rear inner mold 1. Under the action of the wedge-shaped platform 207, the spline shafts 204 elastically contract and slide until they contact the vertical surface of the symmetrical wedge-shaped platform 207. The spline shafts 204 are then fully retracted into the spline sleeve 203. The vehicle body 201 continues to move, causing the spline shafts 204 to continue moving. Subsequently, the spline shafts 204 align with the spline groove of the T-shaped sleeve 206, and the spline shafts 204 elastically release and slide into the spline groove. At this time, the tops of the two sets of support rods 901 are aligned with the spline groove. When the bottom of the corresponding support plate 902 contacts, the output shaft of the dual-axis drive motor 202 is rotated, causing the lead screw 303 to lift the support leg 304 upward. At this time, the vehicle body 201 moves backward a distance equal to that of an inner mold 1. The inner mold 1 on the rear side moves backward synchronously. Then, the second electromagnet 801 is activated. The second electromagnet 801 applies a repulsive force to the magnetic plate on the adjacent push rod 602. The magnetic plate is forced to slide the push rod 602 towards the side closer to the lever 603. The second tension spring is stretched under force. After sliding, the push rod 602 contacts and presses against the lever 603, causing the threaded groove of the movable block 402 to engage with the threaded sleeve 401. Then, the dual-axis drive motor 202 is activated. The output shaft of the drive motor 202 rotates, simultaneously resetting the support leg 304 and disengaging the splined shaft 204 from the spline groove of the T-sleeve 206. At this time, the support frame 205 provides support for the inner mold 1. Then, the vehicle body 201 is controlled to move forward, causing the splined shaft 204, push rod 602, and support rod 901 to move forward. After the splined shaft 204 moves, it contacts the end of the T-sleeve 206. When the push rod 602 moves, the movable block 402 gradually contracts and slides elastically, driving the lever 603 to move synchronously with the push rod 602. After the support rod 901 moves, it no longer contacts the support plate 902. Subsequently, the movable block 402 no longer contacts the threaded sleeve 401. The first tension spring contracts, causing the release rod 501 to slide back to its original position. The release rod 501, through four connecting rods, causes the screw sleeve 401 to slide back to its original position until the movable block 402 fully contracts and slides back to its original position. The lever 603 stops moving, and the push rod 602 continues to move away from the lever 603. Then the second electromagnet 801 is turned off. The second electromagnet 801 no longer exerts a repulsive force on the magnetic plate on the push rod 602. The second tension spring contracts, causing the push rod 602 to slide back to its original position. This achieves the change of position of the vehicle body 201 on the two inner molds 1 without the need for operator intervention, improving work efficiency, reducing the consumption of inner mold 1 materials, and lowering construction costs.

[0027] It is worth adding that the number of inner molds 1 can be adjusted according to the actual construction needs. The positions of multiple inner molds 1 can be adjusted through one vehicle body 201, which greatly reduces the construction cost. Furthermore, the curing time of the concrete is used to provide movement or fixation for other inner molds 1, which effectively improves work efficiency.

[0028] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments.

Claims

1. A self-propelled double-mold hydraulic box culvert casting trolley, comprising two sets of inner molds (1), characterized in that: Also includes: The vehicle body (201) is equipped with a dual-shaft drive motor (202). The spline sleeve (203) is fixedly installed on the output shaft of the dual-axis drive motor (202); The spline shaft (204) is flexibly slidably installed inside the spline sleeve (203); A fixing mechanism is set inside the inner mold (1). The fixing mechanism includes a support frame (205) which is symmetrically fixed inside the inner mold (1). T-shaped sleeve (206) is rotatably installed in support frame (205), and has a spline groove that mates with spline shaft (204); The support frame (205) is provided with an exit mechanism for automatically exiting the spline shaft (204) from the spline groove of the T-sleeve (206); The exit mechanism includes a threaded sleeve (401) that is slidably mounted on a T-shaped sleeve (206), and a movable block (402) that is elastically slidably mounted inside a support frame (205). The movable block (402) has a threaded groove that matches the threaded sleeve (401). The withdrawal mechanism also includes a withdrawal rod (501) fixedly connected by multiple connecting rods and a screw sleeve (401). The withdrawal rod (501) is slidably installed in the T-shaped sleeve (206). A first tension spring is provided between the withdrawal rod (501) and the T-shaped sleeve (206). A guide groove is provided through the T-shaped sleeve (206), and multiple connecting rods are located in the guide groove. The exit mechanism also includes a bracket (601) symmetrically fixedly installed on the vehicle body (201), a push rod (602) symmetrically slidably installed inside the bracket (601), a second tension spring between the push rod (602) and the bracket (601), a lever (603) cooperating with the push rod (602) fixedly installed on the movable block (402), and a first sliding groove cooperating with the lever (603) is opened on the support frame (205).

2. The self-propelled double-internal-mold hydraulic box culvert casting trolley according to claim 1, characterized in that: The fixing mechanism also includes a wedge-shaped platform (207) symmetrically fixed on the support frame (205), which is used in conjunction with the spline shaft (204).

3. The self-propelled double-internal-mold hydraulic box culvert casting trolley according to claim 2, characterized in that: The fixing mechanism also includes a drive assembly (301) installed in the support frame (205), a T-shaped sleeve (206) connected to the drive assembly (301), a telescopic shaft (302) symmetrically rotatably installed in the support frame (205), the telescopic shaft (302) connected to the drive assembly (301), a lead screw (303) threadedly connected to the support frame (205) is fixedly installed at the telescopic end of the telescopic shaft (302), and a support foot (304) is rotatably installed at the bottom of the lead screw (303).

4. The self-propelled double-internal-mold hydraulic box culvert casting trolley according to claim 1, characterized in that: It also includes a first electromagnet (701) installed in one of the brackets (601), and a magnetic plate is fixedly installed on the push rod (602).

5. A self-propelled double-internal-mold hydraulic box culvert casting trolley according to claim 4, characterized in that: It also includes a second electromagnet (801) mounted in another bracket (601).

6. The self-propelled double-internal-mold hydraulic box culvert casting trolley according to claim 1, characterized in that: It also includes two sets of support rods (901) symmetrically fixed on the vehicle body (201), and support plates (902) that cooperate with the support rods (901) are symmetrically installed on the support frame (205).

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