A beam field concrete precast beam plate steam curing chamber

Abstract

The present application relates to a kind of beam field concrete precast beam plate steam curing chamber, belong to concrete steam curing technical field, including two side walls, top partition and several pulley assemblies;Top partition and two side walls are rotatably connected, and top partition, two side walls and ground form the steam curing space of beam plate;Ground is provided with multiple tracks for the sliding of two side walls, and side wall moves transversely in multiple tracks to adjust the width of steam curing space;Several pulley assemblies are rotatably installed at the bottom of any side wall, and any pulley assembly is slid in multiple tracks, when pulley assembly is vertically rotated, side wall and top partition are clamped, when pulley assembly is transversely rotated, top partition and side wall relatively rotate, by adjusting the width of steam curing chamber, it is matched with the actual size of beam plate, avoid the problem that heat is dispersed and steam curing is not uniform due to steam curing chamber is too large, thereby improve the steam curing quality and efficiency of beam plate.

Description

Technical Field

[0001] This invention belongs to the field of concrete steam curing technology, specifically relating to a steam curing chamber for precast concrete beams and slabs in a beam yard. Background Technology

[0002] In the production of precast concrete beams and slabs, steam curing is a key process to ensure the early strength development of concrete and shorten the demolding cycle. Traditional steam curing chambers mostly adopt a fixed-width enclosed structure, maintaining internal temperature and humidity through steam generators. However, with the increasing demand for diverse beam and slab specifications in prefabricated buildings, these fixed steam curing chambers have gradually revealed the following technical bottlenecks:

[0003] When faced with beams and slabs of different sizes, especially smaller components, a fixed-width steam curing chamber requires ineffective heating of the excess space.

[0004] To accommodate multi-specification production, traditional solutions require multiple dedicated steam curing chambers or frequent modifications to the chamber structure, leading to increased equipment investment costs and higher space occupancy. Furthermore, the large thermal inertia of steam in a fixed volume results in a lag in temperature regulation response. When curing beams and slabs with different heat capacities, existing systems struggle to quickly reach the set temperature and humidity profiles, affecting the standardization of curing processes.

[0005] Therefore, there is a need for a precast concrete curing chamber that can modify the curing space. Summary of the Invention

[0006] To address the aforementioned problems in the existing technology, this invention provides a steam curing chamber for precast concrete beams and slabs in beam yards, which solves the problems of high steam curing energy consumption and low steam curing efficiency caused by the inability to adjust the width of existing steam curing chambers.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A precast concrete beam curing chamber for a beam yard includes two side partitions, a top partition, and several pulley assemblies. The top partition and the two side partitions are rotatably connected, and the top partition, the two side partitions, and the ground enclose the curing space of the beam. The ground is provided with multiple tracks for the two side partitions to slide on, and the side partitions can move laterally on the multiple tracks to adjust the width of the curing space. Several pulley assemblies are rotatably installed at the bottom of any of the side partitions, and any pulley assembly slides on the multiple tracks. When the pulley assembly rotates laterally, the top partition and the side partitions rotate relative to each other, driving the two side partitions to move closer to or further away from each other.

[0009] Preferably, the top partition wall includes a support shaft, a rotating shaft, and several top plates. The several top plates are rotatably connected to the support shaft, and the top plates are evenly distributed on both sides of the support shaft. The top plates on both sides are rotatably connected to the side partition walls through the rotating shaft, which is used to compensate for the length of the top partition wall when the side partition walls are close to or far from each other.

[0010] Preferably, the multi-track system includes a horizontal track and several sets of vertical tracks arranged on both sides. The vertical tracks on the same side are connected by the horizontal track. The pulley assembly moves from the vertical track through the horizontal track to another vertical track to adjust the width of the steaming space.

[0011] Preferably, the pulley assembly includes rollers, a drive shaft, and a contact rod; the drive shaft is rotatably mounted on the side partition wall, and the rollers and the drive shaft are coaxially connected to drive the side partition wall to move between the horizontal track and the vertical track; the drive shaft is provided with a guide groove, and the contact rod is slidably mounted on the guide groove, the guide groove changing the rotational motion of the drive shaft into the linear motion of the contact rod; the side partition wall is provided with a rotation groove, the rotation shaft is mounted on the rotation groove, the top plate rotates in the rotation groove, and the contact rod moves linearly in the vertical direction to change the space of the rotation groove to restrict the rotational motion of the top plate.

[0012] Preferably, each of the two side partitions is connected to a drive assembly, which is used to drive the two side partitions to move. The drive assembly includes a drive circular gear, a drive spur gear, and a drive motor. The drive circular gear is disposed on the top of one side of the horizontal track, and the drive spur gear is fixedly disposed on one side of the side partition. The drive circular gear and the drive spur gear mesh with each other. The drive motor and the drive circular gear are coaxially connected. The drive assembly is used to provide rotational power to the drive circular gear.

[0013] Preferably, it further includes a locking assembly for adjusting the lateral and vertical movement of the roller; the locking assembly includes a locking rod, locking teeth, and a transmission threaded portion; the transmission threaded portion is disposed on the transmission shaft, the locking teeth are threadedly connected to the transmission threaded portion, the locking rod and the locking teeth are fixedly connected, the locking rod moves linearly in the vertical direction and engages to maintain the lateral or vertical state of the roller; the locking teeth convert the linear movement of the transmission shaft into the rotational movement of the transmission shaft, thereby changing the lateral or vertical state of the roller; a hook portion is provided on the upper part of the locking rod, the hook portion engages with a fixing portion provided on the side partition wall, the number of fixing portions is at least two, and the two fixing portions have different heights.

[0014] Preferably, the side partition wall includes several square tubes and hinged rods, and adjacent square tubes are connected by hinged rods to adjust the vertical length of the steam curing space; the bottom of several square tubes is connected to the pulley assembly, the square tube at the rear end moves in the lateral direction, and the locking assembly is installed on the pulley assembly at the rear end.

[0015] Preferably, the drive shaft rotates at least 90°.

[0016] Preferably, the maximum moving distance of the abutment rod is not less than the distance between the bottom surface of the rotating groove and the horizontal tangent of the transmission shaft.

[0017] Preferably, it also includes a sealing film, which is fitted over the outside of the side partition wall and the top partition wall to keep the steam curing space sealed.

[0018] The beneficial effects of this invention are as follows:

[0019] This application adjusts the width of the steam curing chamber to match the actual size of the beams and slabs, avoiding the problems of heat dispersion and uneven steam curing caused by an excessively large steam curing chamber. The width adjustment makes it easier to control and optimize parameters such as temperature and humidity in the steam curing chamber, thereby improving the steam curing quality and efficiency of the beams and slabs. The width adjustment mechanism is simple and efficient. The operator can quickly adjust the width by controlling the movement of the pulley assembly, which greatly simplifies the operation process. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a front view structural diagram of the steam curing chamber provided in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the steam curing chamber width adjustment structure provided in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure of the pulley assembly provided in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the longest moving distance of the abutment rod provided in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the downward sliding structure of the abutment rod provided in one embodiment of the present invention;

[0026] Figure 6 This is a top view schematic diagram of the multi-track structure provided in one embodiment of the present invention;

[0027] Figure 7This is a side view of the steam curing chamber structure provided in one embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the connection structure of the driving component provided in one embodiment of the present invention;

[0029] Legend: 1. Side partition wall; 11. Square tube; 12. Hinge rod; 13. Rotating groove; 2. Top partition wall; 21. Support shaft; 22. Rotating shaft; 23. Top plate; 3. Pulley assembly; 31. Roller; 32. Drive shaft; 321. Guide groove; 33. Abutment rod; 4. Multi-track; 41. Horizontal track; 42. Vertical track; 5. Drive assembly; 51. Drive circular gear; 52. Drive spur gear; 53. Drive motor; 6. Locking assembly; 61. Locking rod; 62. Locking tooth; 63. Drive threaded part; 7. Sealing membrane. Detailed Implementation

[0030] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0031] like Figures 1-8 As shown, a precast concrete beam curing chamber for a beam yard includes two side partition walls 1, a top partition wall 2, and several pulley assemblies 3. The top partition wall 2 and the two side partition walls 1 are rotatably connected, and the top partition wall 2, the two side partition walls 1, and the ground enclose the curing space of the beam slab. The ground is provided with multiple tracks 4 for the two side partition walls 1 to slide. The side partition walls 1 move laterally on the multiple tracks 4 to adjust the width of the curing space. Several pulley assemblies 3 are rotatably installed at the bottom of any side partition wall 1. Any pulley assembly 3 slides on the multiple tracks 4. When the pulley assembly 3 rotates laterally, the top partition wall 2 and the side partition walls 1 rotate relative to each other, driving the two side partition walls 1 to move closer to each other or further away from each other.

[0032] When the width of the steam curing chamber needs to be adjusted, the operator drives the pulley assembly 3 at the bottom of the two side partitions 1 to move laterally on the multi-track 4, bringing the two side partitions 1 closer to each other. As the pulley assembly 3 rotates vertically and the side partitions 1 continue to move, the top partition 2 is gradually lifted. Because the change in the geometry and position of the pulley assembly 3 during rotation causes the top partition 2 to be subjected to an upward force, it is lifted up. As the top partition 2 is lifted and the side partitions 1 move inward at the same time, the width of the steam curing space (i.e., the distance between the side partitions 1) decreases accordingly. This width adjustment is dynamic and continuous and can be precisely adjusted according to the size requirements of the beams and slabs.

[0033] In summary, by adjusting the width of the steam curing chamber to match the actual size of the beams and slabs, the problems of heat dispersion and uneven steam curing caused by an excessively large steam curing chamber are avoided. Width adjustment makes it easier to control and optimize parameters such as temperature and humidity within the steam curing chamber, thereby improving the steam curing quality and efficiency of the beams and slabs. The width adjustment mechanism is simple and efficient; the operator only needs to control the movement of the pulley assembly 3 to quickly adjust the width, greatly simplifying the operation process.

[0034] In one embodiment, the top partition wall 2 includes a support shaft 21, a rotation shaft 22, and a plurality of top plates 23. The plurality of top plates 23 are rotatably connected to the support shaft 21, and the top plates 23 are evenly distributed on both sides of the support shaft 21. The top plates 23 on both sides are rotatably connected to the side partition walls 1 through the rotation shaft 22, which is used to compensate for the length of the top partition wall 2 when the side partition walls 1 are close to or far from each other.

[0035] When the side partition wall 1 moves laterally on the multi-track 4 to adjust the width of the steam curing space, the side partition wall 1 and the top partition wall 2 rotate relative to each other on the rotating shaft 22. The top plate 23 begins to rotate around the support shaft 21. Since the top plate 23 and the side partition wall 1 are connected through the rotating shaft 22, the movement of the side partition wall 1 will cause the top plate 23 to rotate around the rotating shaft 22 as the rotation point. Through the lifting mechanism of the top partition wall 2, it is ensured that the steam curing space remains intact and closed during the width adjustment process, avoiding the problem of steam curing space leakage caused by insufficient length of the top partition wall 2. The steam curing space can be quickly adjusted through simple width adjustment, which enhances the flexibility and versatility of the equipment. Since the top partition wall 2 can automatically rise and fall with the movement of the side partition wall 1, the mechanical wear and fatigue damage caused to the top partition wall 2 by the width adjustment is reduced, thereby extending the service life of the equipment.

[0036] In one embodiment, the multi-track 4 includes a horizontal track 41 and several sets of vertical tracks 42 arranged on both sides. The vertical tracks 42 on the same side are connected by the horizontal track 41. The pulley assembly 3 moves from the vertical track 42 through the horizontal track 41 into another vertical track 42 to adjust the width of the steaming space.

[0037] When the width of the steam curing chamber needs to be adjusted, the pulley assembly 3 passes through the horizontal track 41 from the vertical track 42 and enters the vertical track 42 on the other side, allowing the side partition wall 1 to move laterally, thereby changing the width of the steam curing space. By controlling the moving distance of the pulley assembly 3, the distance between the two side partition walls 1, i.e. the width of the steam curing space, can be precisely adjusted. The interconnection of the vertical track 42 and the horizontal track 41 forms a stable frame, providing reliable support for the movement of the side partition wall 1 and enhancing the stability of the entire steam curing chamber structure.

[0038] In one embodiment, the pulley assembly 3 includes a roller 31, a drive shaft 32, and a contact rod 33. The drive shaft 32 is rotatably mounted on the side partition wall 1, and the roller 31 and the drive shaft 32 are coaxially connected to drive the side partition wall 1 to move between the horizontal track 41 and the vertical track 42. The drive shaft 32 is provided with a guide groove 321, and the contact rod 33 is slidably mounted on the guide groove 321. The guide groove 321 changes the rotational movement of the drive shaft 32 into the linear movement of the contact rod 33. The side partition wall 1 is provided with a rotation groove 13, and the rotation shaft 22 is mounted on the rotation groove 13. The top plate 23 rotates in the rotation groove 13, and the contact rod 33 moves linearly in the vertical direction to change the space of the rotation groove 13 to restrict the rotational movement of the top plate 23.

[0039] The side partition wall 1 is provided with a rotating groove 13, and a rotating shaft 22 is installed in the rotating groove 13. The top plate 23 rotates in the rotating groove 13, so that the top plate 23 can rotate around the rotating shaft 22. When the abutting rod 33 moves in a straight line in the vertical direction, it changes the space of the rotating groove 13. Specifically, the movement of the abutting rod 33 restricts the rotation range of the top plate 23 in the rotating groove 13, thereby controlling the rotation and lifting height of the top partition wall 2. By controlling the movement distance of the abutting rod 33, the rotation movement of the top plate 23 can be restricted, thereby adjusting the width between the side partition walls 1. Furthermore, the guide groove 321 is curved, and the bottom of the abutting rod 33 is provided with a symmetrical sliding part. Through the cooperation of the sliding part and the guide groove 321, when the guide groove 321 rotates, the abutting rod 33 is affected by the side partition wall 1, so that the abutting rod 33 moves in a straight line along the shape of the guide groove 321.

[0040] The application of guide groove 321 and abutment rod 33 cleverly transforms the rotational motion of drive shaft 32 into the linear motion of abutment rod 33, thereby restricting the rotational motion of top plate 23. This not only improves the stability and reliability of the equipment but also enhances its flexibility and versatility. Precise width adjustment allows the steam curing space to better match the dimensions of the beams and slabs, avoiding heat dispersion and uneven steam curing caused by excessively large steam curing spaces. This not only improves the steam curing quality of the beams and slabs but also shortens the steam curing time, thereby increasing steam curing efficiency. Because the width adjustment process is more stable and precise, it reduces mechanical wear and fatigue damage to the equipment caused by improper adjustment.

[0041] In one embodiment, each of the two side partition walls 1 is connected to a drive assembly 5, which is used to drive the two side partition walls 1 to move. The drive assembly 5 includes a drive circular tooth 51, a drive spur tooth 52 and a drive motor 53. The drive circular tooth 51 is disposed on the top of one side of the horizontal track 41, and the drive spur tooth 52 is fixedly disposed on one side of the square tube 11. The drive circular tooth 51 and the drive spur tooth 52 mesh with each other. The drive motor 53 is coaxially connected to the drive circular tooth 51. The drive assembly 5 is used to provide rotational power to the drive circular tooth 51.

[0042] When the width of the side partition 1 needs to be adjusted, the drive motor 53 starts and generates rotational force. The rotational force of the drive motor 53 is transmitted to the drive gear 51 through a coaxial connection, causing the drive gear 51 to start rotating. Since the drive gear 51 meshes with the drive spur gear 52, the rotation of the drive gear 51 will drive the drive spur gear 52 to move laterally on the horizontal track 41. The drive spur gear 52 is fixedly set on one side of the square tube 11, so the movement of the drive spur gear 52 will drive the entire square tube 11 to move laterally on the horizontal track 41, thereby realizing the adjustment of the width of the side partition 1. Therefore, the design of the drive assembly 5 makes the adjustment process of the width of the side partition 1 faster and more efficient. Compared with the traditional manual adjustment method, the drive assembly 5 can complete the width adjustment in a short time, greatly improving the adjustment efficiency; due to the meshing of the drive gear 51 and the drive spur gear 52, the adjustment process of the width of the side partition 1 is more precise. By controlling the magnitude and direction of rotation of the drive motor 53, the width of the side partition wall 1 can be precisely adjusted to meet the steam curing requirements of beams and slabs of various sizes. The application of the drive component 5 automates the width adjustment process of the steam curing chamber. This not only reduces the labor intensity of operators but also improves the overall automation level of the equipment, making the steam curing process more intelligent and convenient.

[0043] In one embodiment, a locking assembly 6 is further included. The locking assembly 6 is used to adjust the lateral and vertical movement of the roller 31. The locking assembly 6 includes a locking rod 61, a locking tooth 62, and a transmission thread 63. The transmission thread 63 is disposed on the transmission shaft 32. The locking tooth 62 and the transmission thread 63 are threadedly connected. The locking rod 61 and the locking tooth 62 are fixedly connected. The locking rod 61 moves linearly in the vertical direction and engages to maintain the lateral or vertical state of the roller 31. The locking tooth 62 converts the linear movement of the transmission shaft 32 into the rotational movement of the transmission shaft 32, thereby changing the lateral or vertical state of the roller 31. A hook is provided on the upper part of the locking rod 61. The hook engages with at least two fixing parts of different heights provided on the side partition wall 1, so that the locking rod 61 can be fixed at different height positions, thereby achieving locking of the roller 31 in different states.

[0044] When it is necessary to change the state of roller 31, the operator moves locking rod 61 to make it move in a straight line in the vertical direction. The movement of locking rod 61 will be fixed at different height positions through the engagement relationship between hook part and fixed part on side partition 1.

[0045] The locking tooth 62 rotates: The movement of the locking rod 61 will drive the locking tooth 62 to rotate. Since the locking tooth 62 is threadedly connected to the transmission thread 63, the rotation of the locking tooth 62 will be converted into the linear motion of the transmission thread 63.

[0046] The drive shaft 32 rotates: The linear motion of the drive thread 63 will drive the drive shaft 32 to rotate. Since the drive shaft 32 is coaxially connected with the roller 31, the rotation of the drive shaft 32 will drive the roller 31 to rotate. The state of the roller 31 changes: By controlling the linear motion distance and direction of the locking rod 61, the rotation angle and direction of the roller 31 can be controlled, thereby changing the horizontal or vertical state of the roller 31.

[0047] In one embodiment, the side partition wall 1 includes a plurality of square tubes 11, and adjacent square tubes 11 are connected by hinge rods 12 for adjusting the vertical length of the steam curing space; the bottom of the plurality of square tubes 11 is connected to the pulley assembly 3, and the square tubes 11 located at the rear end move only in the lateral direction, and the locking assembly 6 is installed on the pulley assembly 3 at the rear end.

[0048] When the vertical length of the steam curing space needs to be adjusted, the vertical movement of the pulley assembly 3 is controlled. Several square tubes 11, under the action of the hinge rod 12, achieve power transmission, thereby increasing the distance between adjacent square tubes 11 and thus changing the overall vertical length. Since the rear square tube 11 is fixed by the locking assembly 6, the movement of the front square tube 11 causes the entire side partition wall 1 to deform vertically. As the square tubes 11 move, the vertical length of the steam curing space also changes, allowing the steam curing chamber to adapt to the steam curing requirements of beams and slabs of different heights. This improves the flexibility and versatility of the equipment. Since the locking assembly 6 is only installed on the rear square rod, the movement direction of the pulley assembly 3 of the other square tubes 11 is also affected by the direction of the pulley assembly 3 connected to the locking assembly 6. That is, if the pulley assembly 3 connected to the locking assembly 6 is in the vertical track 42, then the square tubes 11 can only move laterally in the vertical track 42. Conversely, when the pulley assembly 3 rotates into the horizontal track 41, the other square tubes 11 also enter the horizontal track 41 under the action of their respective pulley assemblies 3 to move and adjust the width of the steaming space.

[0049] In one embodiment, the drive shaft 32 rotates at least 90°. To achieve a smooth transition of the roller 31 from the vertical track 42 to the horizontal track 41, the roller 31 needs to complete a 90° rotation from the vertical direction to the horizontal direction. This rotation process must be precisely controlled to ensure that the roller 31 can accurately enter the horizontal track 41 and remain stable. As the driving component for the rotation of the roller 31, the rotation angle of the drive shaft 32 directly determines the rotation angle of the roller 31. Therefore, to achieve a 90° rotation of the roller 31, the drive shaft 32 must also rotate at least 90°. When the drive shaft 32 rotates... At 90°, roller 31 also rotates 90°, changing its orientation from vertical to horizontal, thus completing the switch from vertical track 42 to horizontal track 41. During the rotation of drive shaft 32, roller 31 gradually disengages from vertical track 42 and enters horizontal track 41. Because the rotation of drive shaft 32 is precisely controlled, it ensures that roller 31 can smoothly and accurately enter horizontal track 41. Therefore, the design requiring drive shaft 32 to rotate at least 90° ensures that roller 31 can smoothly and accurately enter horizontal track 41. This design avoids problems such as roller 31 jamming or offset due to insufficient or excessive rotation angle, improving the stability and reliability of track switching.

[0050] In one embodiment, the maximum moving distance of the abutment rod 33 is not less than the distance between the bottom surface of the rotating groove 13 and the horizontal tangential surface of the transmission shaft 32. Therefore, the abutment rod 33 can move within a sufficiently large range to ensure that its front end can abut the top rod. When the front end of the abutment rod 33 abuts the top rod, a reaction force is generated, which prevents the top rod from rotating. Since the moving distance of the abutment rod 33 is large enough, it can provide effective abutment at any position of the top rod rotation. Through the abutment action of the abutment rod 33, the top rod is stably fixed on the transmission shaft 32 and will not rotate. Through the abutment action of the abutment rod 33, the rotation of the top rod is effectively prevented, improving the stability of the transmission system. Since the abutment rod 33 can effectively prevent the rotation of the top rod, equipment damage or safety accidents caused by the rotation of the top rod are avoided, improving the safety of the equipment and protecting the life and property safety of the operators.

[0051] In one embodiment, a sealing membrane 7 is further included. The sealing membrane 7 is fitted over the outer sides of the side partition wall 1 and the top partition wall 2 to maintain a seal in the steam curing space. The sealing membrane 7 is tightly fitted over the outer surfaces of the side partition wall 1 and the top partition wall 2, forming a continuous, seamless covering layer, ensuring a good fit between the sealing membrane 7 and the side partition wall 1 and the top partition wall 2, and preventing steam leakage due to gaps. When steam is generated inside the steam curing space, the sealing membrane 7 acts as a physical barrier, preventing steam from escaping from the outside of the side partition wall 1 and the top partition wall 2. At the same time, the sealing membrane 7 also prevents outside air from entering the steam curing space, thereby maintaining stable pressure and temperature inside the steam curing space.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A steam curing chamber for precast concrete beams and slabs in a beam yard, characterized in that, The device includes two side partitions, a top partition, and several pulley assemblies. The top partition and the two side partitions are rotatably connected, and the top partition, the two side partitions, and the ground form a steam curing space with beams and slabs. The ground is provided with multiple tracks for the two side partitions to slide on, and the side partitions can move laterally on the multiple tracks to adjust the width of the steam curing space. Several pulley assemblies are rotatably installed at the bottom of any of the side partitions, and any pulley assembly slides on the multiple tracks. When the pulley assembly rotates laterally, the top partition and the side partitions rotate relative to each other, driving the two side partitions to move closer to each other or further away from each other. The top partition wall includes a support shaft, a rotating shaft, and several top plates. Each top plate is rotatably connected to the support shaft and is evenly distributed on both sides of the support shaft. The top plates on both sides are rotatably connected to the side partition walls via the rotating shaft, which compensates for the length of the top partition wall when the side partition walls move closer or further apart. The multi-track system includes a horizontal track and several sets of vertical tracks on both sides. The vertical tracks on the same side are connected by the horizontal track. The pulley assembly moves from the vertical track through the horizontal track to another vertical track to adjust the width of the steam curing space. The pulley assembly includes rollers, a drive shaft, and a contact rod. The drive shaft is rotatably mounted on the side partition wall, and the rollers and the drive shaft are coaxially connected to drive the side partition wall to move between the horizontal track and the vertical track. The drive shaft is provided with a guide groove, and the contact rod is slidably mounted on the guide groove. The guide groove converts the rotational motion of the drive shaft into the linear motion of the contact rod. The side partition wall is provided with a rotation groove, and the rotation shaft is mounted on the rotation groove. The top plate rotates in the rotation groove, and the contact rod moves linearly in the vertical direction to change the space of the rotation groove to restrict the rotational motion of the top plate. It also includes a locking assembly for adjusting the lateral and vertical movement of the roller; the locking assembly includes a locking rod, locking teeth, and a transmission thread; the transmission thread is disposed on the transmission shaft, the locking teeth are threadedly connected to the transmission thread, the locking rod and the locking teeth are fixedly connected, the locking rod moves linearly in the vertical direction and engages, for maintaining the lateral or vertical state of the roller; the locking teeth convert the linear movement of the transmission shaft into the rotational movement of the transmission shaft, for changing the lateral or vertical state of the roller.

2. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 1, characterized in that, Both sides of the side partition are connected to a drive assembly, which is used to drive the two side partitions to move. The drive assembly includes a drive circular gear, a drive spur gear, and a drive motor. The drive circular gear is disposed on the top of one side of the horizontal track, and the drive spur gear is fixedly disposed on one side of the side partition. The drive circular gear and the drive spur gear mesh with each other. The drive motor and the drive circular gear are coaxially connected. The drive assembly is used to provide rotational power to the drive circular gear.

3. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 1, characterized in that, The upper part of the locking rod is provided with a hook, which is engaged with a fixing part provided on the side partition wall. There are at least two fixing parts, and the two fixing parts are of different heights.

4. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 3, characterized in that, The side partition wall includes several square tubes and hinged rods, and adjacent square tubes are connected by hinged rods to adjust the vertical length of the steam curing space; the bottom of several square tubes is connected to the pulley assembly, the square tubes at the rear end move in the lateral direction, and the locking assembly is installed on the pulley assembly at the rear end.

5. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 1, characterized in that, The drive shaft rotates at least 90°.

6. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 5, characterized in that, The maximum moving distance of the abutment rod is not less than the distance between the bottom surface of the rotating groove and the horizontal tangent surface of the transmission shaft.

7. The steam curing chamber for precast concrete beams and slabs in a beam yard according to claim 1, characterized in that, It also includes a sealing membrane, which is fitted over the outside of the side partition and the top partition to keep the steam curing space sealed.

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