Belt tensioning mechanism for concrete horizontal belt conveyor

Abstract

The belt tensioning mechanism for the concrete horizontal belt conveyor comprises a tensioning roller and a balance weight body, the tensioning roller is connected to the upper end of a tensioning frame in a rotating mode through a tensioning rotating shaft, the balance weight body is fixedly connected to the lower portion of the tensioning frame, and the two sides of the tensioning frame are vertically connected to two guide rods in a sliding mode through guide connecting lugs. The two guide rods are vertically connected to the two supporting columns in a suspended mode respectively, the upper ends of the two supporting columns are fixedly connected to the bottom of a belt frame of the upper-layer short belt conveyor or the upper-layer long belt conveyor, the lower ends of the two supporting columns are fixedly connected to the ground, and the tensioning roller can stretch a penetrating belt downwards. The two guide rollers are located above the two sides of the tensioning roller respectively. According to the self-adaptive tensioning device, self-adaptive tensioning can be achieved, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of concrete horizontal conveying technology, and relates to a belt tensioning mechanism for a concrete horizontal belt conveyor. Background Technology

[0002] In the prefabrication of highway bridges, the main method for concrete transportation and pouring is the concrete mixer truck + hopper method. This method suffers from long pouring times, significant concrete slump loss, and overlapping operations involving concrete pouring, rebar hoisting, and formwork installation. In recent years, to address these issues, China has introduced a concrete conveying technology using torpedo-shaped concrete mixers and placing booms, which is being widely promoted in smart beam yards. The torpedo-shaped concrete mixer uses a circular track, positioned above the mixing plant and the concrete pouring area. The circular track has a turning radius of 6 meters. Four torpedo-shaped concrete mixers are installed on the track, transporting concrete from the mixing plant to the placing boom along the circular track. Each mixer has a volume of 3 cubic meters. The mixers are operated remotely with multi-function buttons, allowing for multi-point dispensing to accommodate various production conditions. The travel speed is adjustable from 0-60 m / min. Dispensing is done by a 180° rotation, aided by a vibrating motor. The torpedo-shaped concrete mixer travels at 55 m / min on a straight line and 20 m / min on a curved path. The circular track has a straight section of 162m (long side) and a short section of 20m (short side), with a curve length of 18.84m. The time for one loop is 7.56 minutes. The unloading time is 6 minutes. Each trip transports 3 cubic meters of material, resulting in a final efficiency of 2.63 minutes / m². 3 The inventors discovered through on-site investigation that torpedo canisters suffered from a series of defects, including high failure rates, slow operating speeds, and difficulties in cleaning; the use of horizontal conveyor belts for concrete transport solved these problems.

[0003] However, for belt tensioning mechanisms, if conventional bolts are used to adjust the tensioning end rollers, it is difficult to achieve adaptive tensioning, resulting in numerous adjustments and frequent maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a belt tensioning mechanism for a concrete horizontal belt conveyor, which can achieve adaptive tensioning and reduce maintenance frequency.

[0005] The technical solution adopted in this utility model is as follows: a belt tensioning mechanism for a concrete horizontal belt conveyor, including a tensioning roller and a counterweight. The tensioning roller is rotatably connected to the upper end of the tensioning frame via a tensioning shaft. The counterweight is fixedly connected to the lower part of the tensioning frame. The two sides of the tensioning frame are vertically slidably connected to two guide rods via guide connecting ears. The two guide rods are vertically suspended and connected to two support columns. The upper ends of the two support columns are fixedly connected to the bottom of the belt frame of the upper short belt conveyor or the upper long belt conveyor, and the lower ends are fixedly connected to the ground. The tensioning roller can stretch the belt passing through downwards. Two guide rollers are provided on the belt frame, and the two guide rollers are located above the two sides of the tensioning roller.

[0006] Furthermore, the two guide rollers mentioned above are flush with the idler rollers on the belt frame.

[0007] Furthermore, the aforementioned counterweight includes an iron box and a concrete block poured inside the iron box. The front end of the iron box is provided with a pouring port, the top surface is a slope, a V-shaped collecting groove is provided on the slope, and a drainage pipe is connected to the lowest end of the V-shaped collecting groove.

[0008] Furthermore, the aforementioned tensioning frame is a U-shaped frame structure, with two bearing seats fixedly connected to the two top ends, and multiple longitudinal support beams connected to the bottom crossbeam. The multiple longitudinal support beams and the crossbeam are all fixedly connected to the bottom of the counterweight.

[0009] Furthermore, the upper and lower ends of the two guide rods are fixedly connected to the two cantilever beams respectively, and a connecting flange plate is fixedly connected to the other end of each cantilever beam. The connecting flange plate is fixedly connected to the support column by a clamp.

[0010] The beneficial effects of this utility model are as follows: Compared with the prior art, the effects of this utility model are as follows:

[0011] (1) This utility model adopts a belt tensioning mechanism consisting of a tensioning roller and a counterweight. The belt is tensioned by the weight of the counterweight. The structure is simple. The counterweight can slide automatically along the guide rod to achieve adaptive tensioning, ensuring the reliability of tensioning. It avoids the problem of needing to readjust the belt after it loosens due to the existing method of fixing it after tensioning with bolts, which greatly reduces the possibility of belt conveyor shutdown and ensures higher production reliability.

[0012] (2) Keep it flush with the idler roller to reduce the space occupied at the belt tensioning point;

[0013] (3) The counterweight is made of iron box and iron filings with concrete blocks inside, which is convenient to manufacture. Moreover, the internal filling amount can be controlled according to the required tension. The top surface is set with a slope and a V-shaped collection groove, which makes it convenient to drain the cement dripping onto the slope to a lower place for treatment through the drainage pipe.

[0014] (4) The tensioning frame has a simple structure and is fixed to the side and bottom of the iron box of the counterweight, which can play a better supporting role. Multiple longitudinal support beams are welded and fixed to the iron box to improve the support strength and rigidity.

[0015] (5) The cantilever beam cantilever support guide rod makes it easy to install the counterweight away from the support column, which facilitates the arrangement of the counterweight block and also makes it easy to arrange the belt vertically on the tensioning roller.

[0016] (7) The running belt is immersed in water in a cleaning box for brushing, and water is circulated by inlet and outlet; this greatly improves the cleaning efficiency and cleaning effect. A lifting mechanism is used to lift the belt as needed, and then clean the belt. The lifting operation is convenient.

[0017] (8) The cleaning tank is raised and lowered by a winding rope and a self-winding mechanism. The operation is convenient and quick, the connection is reliable and stable, and the water tank is empty when it is raised and lowered, which saves time and effort. After the set position is fixed, water is added to the set height, and water is added while draining, so that the cleaning is more thorough.

[0018] (9) A U-shaped water-absorbing sponge brush is set up so that after the water tank is lifted and cleaned, it can absorb water from the belt, reduce the moisture on the belt surface, and improve the belt cleaning effect. The swing rod is used for pulling operation, which can effectively avoid the sponge brush and the belt from interfering during the lifting of the cleaning tank. After reaching the set position, the pull rope is released, and under the reset action of the spring force, the two sponge brushes swing and are elastically clamped on the belt, making the operation convenient and quick.

[0019] (10) Concrete conveyor belt can quickly and quantitatively add concrete to the concrete of the 6 T-beam molds and can quickly and continuously realize the feeding and placing operation of the 3 placing machines covered by each lower belt conveyor. Attached Figure Description

[0020] Figure 1 A front view schematic diagram of a horizontal concrete belt conveyor system used for T-beam production.

[0021] Figure 2 This is a right-side structural schematic diagram of a horizontal concrete belt conveyor system used for T-beam production.

[0022] Figure 3 Right view schematic diagram of the installation structure of four horizontal concrete belt conveyors;

[0023] Figure 4 A schematic diagram of a distributed arrangement of four horizontal concrete belt conveyors;

[0024] Figure 5 This is a schematic diagram of the belt support frame structure;

[0025] Figure 6 A schematic diagram of the installation structure for belt tensioning and belt cleaning;

[0026] Figure 7 This is a schematic diagram of the counterweight structure;

[0027] Figure 8 This is a schematic diagram of the top surface structure of the counterweight.

[0028] Figure 9 This is a side view of the belt cleaning device.

[0029] Figure 10 This is a schematic diagram of a U-shaped sponge brush structure;

[0030] Figure 11 This is a schematic diagram of the nozzle arrangement structure;

[0031] Figure 12 This is a schematic diagram of the belt scraper installation structure;

[0032] Figure 13 This is a schematic diagram of the scraper blade structure;

[0033] Figure 14 Schematic diagram of the front wheel positioning structure of a walking belt conveyor;

[0034] Figure 15 This is a schematic diagram of the positioning structure for the rear wheel of a traveling belt conveyor. Detailed Implementation

[0035] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1: As Figure 6-8As shown, the belt tensioning mechanism 8 includes a tensioning roller 801 and a counterweight 802. The tensioning roller 801 is rotatably connected to the upper end of the tensioning frame 804 via a tensioning shaft 803. The counterweight 802 is fixedly connected to the lower part of the tensioning frame 804. The two sides of the tensioning frame 804 are vertically slidably connected to two guide rods 806 via guide connecting ears 805. The two guide rods 806 are vertically suspended and connected to two support columns 807. The upper ends of the two support columns 807 are fixedly connected to the bottom of the belt frame 808 of the upper short belt conveyor 1 or the upper long belt conveyor 3, and the lower ends are fixedly connected to the ground. The cylinder 801 can pull the passing belt 809 downward. Two guide rollers 810 are provided on the belt frame 808. The two guide rollers 810 are located above the tensioning roller 801 on both sides. The belt tensioning mechanism consists of a tensioning roller and a counterweight. The belt is tensioned by the weight of the counterweight. The structure is simple. The counterweight can slide automatically along the guide rod to achieve adaptive tensioning, ensuring the reliability of tensioning. It avoids the problem of needing to readjust the belt after it loosens due to the existing bolts and other methods of fixing after tensioning. It greatly reduces the possibility of belt conveyor downtime and ensures higher production reliability.

[0037] For ease of arrangement, the two guide rollers 810 are flush with the idler rollers on the belt frame, keeping them flush with the idler rollers to reduce the space occupied at the belt tensioning point and facilitate arrangement.

[0038] To facilitate the manufacture of the counterweight, the counterweight 802 includes an iron box 811 and a concrete block 812 poured inside the iron box 811. The front end of the iron box 811 is provided with a pouring port 813, and the top surface is set as a slope. A V-shaped collecting groove 814 is set on the slope. The lowest end of the V-shaped collecting groove 814 is connected to a drainage pipe 815. The counterweight uses an iron box and iron filings to arrange concrete blocks inside, which is convenient to manufacture. Moreover, the internal filling amount can be adjusted to control the required tension. The top surface is set with a slope and a V-shaped collecting groove, which facilitates the drainage of cement dripping onto the slope to a lower place for treatment through the drainage pipe.

[0039] To facilitate the installation of the counterweight and ensure reliable support, the tensioning frame 804 has a U-shaped frame structure. Two bearing seats 816 are fixedly connected to the two top ends, and multiple longitudinal support beams are connected to the bottom crossbeam. The multiple longitudinal support beams and the crossbeam are all fixedly connected to the bottom of the counterweight 802. The U-shaped tensioning frame structure is simple and is fixed to the side and bottom of the iron box of the counterweight, which can play a better supporting role. The multiple longitudinal support beams are welded and fixed to the iron box to improve the support strength and rigidity.

[0040] To facilitate the installation of the counterweight, the upper and lower ends of the two guide rods 806 are fixedly connected to the two cantilever beams 817 respectively. The other end of each cantilever beam 817 is fixedly connected to a connecting flange plate 818. The connecting flange plate 818 is fixedly connected to the support column 807 by a clamp 819. The cantilever beams support the guide rods, which makes it easy to install the counterweight away from the support column, thereby avoiding the arrangement of the counterweight block and also making it easy to arrange the belt vertically on the tensioning roller.

[0041] To increase the versatility of the belt tensioning mechanism, a belt cleaning device is installed at the belt tensioning mechanism. After the belt runs, although the scraper can play a certain cleaning role, a large amount of debris will still remain on the belt, requiring cleaning to avoid affecting the next use. Therefore, a cleaning device is used for cleaning. That is, the concrete horizontal belt conveyor system used for T-beam production also includes a belt cleaning device 9, such as... Figure 6 and 9 As shown in Figure -10, the belt cleaning device 9 includes a cleaning tank 901 and an auxiliary cleaning roller 902. The auxiliary cleaning roller 902 is rotatably connected to the lower end of a vertical cantilever 903. The upper end of the vertical cantilever 903 is fixedly connected to two support piles 904, which are fixedly connected to the ground. The cleaning tank 901 has a water inlet pipe 905 connected near the top and a drain pipe 906 connected to the bottom. The upper end of the cleaning tank 901 is open and connected to the two support piles 904 through a lifting mechanism. A rotating brush 907 is arranged inside the cleaning tank 901. The rotating brush 907 is rotatably connected to the inner wall of the cleaning tank 901 through a rotating shaft and is arranged side by side with the auxiliary cleaning roller 902. The rotating brush 907 is connected to a drive mechanism. Two transition rollers 908 are horizontally arranged above the auxiliary cleaning roller 902 and the tensioning roller 801. The left of the two transition rollers 908 is... One belt is connected to the mounting plate 920 via a bearing seat, and the other on the right is connected to the top of two support piles via a bearing seat. The mounting plate 920 is fixedly connected to two tripods 921, and the two tripods 921 are fixedly connected to the support piles 904. A cleaning box is used to immerse part of the running belt in water for brushing, and water is circulated through inlet and outlet, which greatly improves the cleaning efficiency and effect. A lifting mechanism is used to lift the belt as needed for cleaning. The lifting operation is convenient. The rotating shaft of the rotating brush 907 is connected to the cleaning drive motor 923 via a synchronous belt 922. The cleaning drive motor 923 is fixedly installed on the top of the cleaning box 901 and is off-center to avoid interference with the structure of the U-shaped water-absorbing sponge brush. The synchronous belt drive is stable and reliable. Plastic pulleys can be used for the synchronous belt to avoid damage caused by rust.

[0042] To facilitate the lifting of the cleaning tank, the lifting mechanism includes a winding rope 909, a fixed pulley 910, and a self-locking winding mechanism 911. One end of the winding rope 909 is fixedly connected to the cleaning tank 901, passes over the fixed pulley 910, and connects to the self-locking winding mechanism 911. The fixed pulley 910 is fixedly connected to a horizontal shaft fixed between two support posts 904. The self-locking winding mechanism 911 is fixedly connected to the ground. The cleaning tank 901 is connected to a guide rail frame 919 via two vertically arranged left-right sliding guide rail pairs 918. The guide rail frame 919 is fixedly connected to the two support posts 904. The cleaning tank is lifted using the winding rope and the self-locking mechanism. The system features a descent control mechanism, convenient and quick operation, reliable and stable connection, and an empty water tank during lifting, saving time and effort. Water is replenished to the set height after reaching the set position, and then added and drained simultaneously for more thorough cleaning. The self-locking winding mechanism 911 includes a self-locking worm gear transmission and a winding drum. Both ends of the winding drum are fixed to the ground via bearing seats, and the winding drum is connected to the output shaft of the worm gear transmission via a drive shaft. The worm gear transmission is fixed to the ground, and its input shaft is connected to a rotating handle, which enables winding. Its self-locking worm gear transmission allows for on-the-spot positioning, saving time and effort.

[0043] Example 2: As Figures 1-15 As shown, a horizontal concrete conveyor system for T-beam production includes an upper short belt conveyor 1, a lower short belt conveyor 2, an upper long belt conveyor 3, and a lower long belt conveyor 4. The upper short belt conveyor 1 and upper long belt conveyor 3 are installed side-by-side on the upper part of the conveyor frame 5 with their starting ends flush. The lower short belt conveyor 2 and lower long belt conveyor 4 are installed on two sets of traveling tracks at the bottom of the conveyor frame 5 via an electric traveling mechanism. The lower short belt conveyor 2 and lower long belt conveyor 4 can respectively face the upper short belt conveyor 1 and upper long belt conveyor 3. The long belt conveyor 4 covers three placing booms 6 respectively. The mixing plant 7 is installed above the starting end of the upper short belt conveyor 1 and the upper long belt conveyor 3 and can be directly opposite the two discharge ports of the mixing plant 7. The two upper belts correspond to the two lower belts, which can cover 6 placing booms at the same time, and then pour 12 T beams, which greatly improves the pouring efficiency and the production efficiency of T beams, and meets the requirements of T beam erection with short construction period. The belt conveyor is directly and linearly transported, which also greatly improves the concrete conveying efficiency. The belt is an open-air structure, which is also convenient for cleaning and greatly reduces the failure rate. The belt conveyor frame 5 is connected to the ground through multiple mounting columns.

[0044] To improve the reliability of belt operation, the upper short belt conveyor 1 and the upper long belt conveyor 3 are equipped with belt tensioning mechanisms 8, such as... Figure 6-8As shown, the belt tensioning mechanism 8 includes a tensioning roller 801 and a counterweight 802. The tensioning roller 801 is rotatably connected to the upper end of the tensioning frame 804 via a tensioning shaft 803. The counterweight 802 is fixedly connected to the lower part of the tensioning frame 804. The two sides of the tensioning frame 804 are vertically slidably connected to two guide rods 806 via guide connecting ears 805. The two guide rods 806 are vertically suspended and connected to two support columns 807. The upper ends of the two support columns 807 are fixedly connected to the bottom of the belt frame 808 of the upper short belt conveyor 1 or the upper long belt conveyor 3, and the lower ends are fixedly connected to the ground. The cylinder 801 can pull the passing belt 809 downward. Two guide rollers 810 are provided on the belt frame 808. The two guide rollers 810 are located above the tensioning roller 801 on both sides. The belt tensioning mechanism consists of a tensioning roller and a counterweight. The belt is tensioned by the weight of the counterweight. The structure is simple. The counterweight can slide automatically along the guide rod to achieve adaptive tensioning, ensuring the reliability of tensioning. It avoids the problem of needing to readjust the belt after it loosens due to the existing bolts and other methods of fixing after tensioning. It greatly reduces the possibility of belt conveyor downtime and ensures higher production reliability.

[0045] For ease of arrangement, the two guide rollers 810 are flush with the idler rollers on the belt frame, keeping them flush with the idler rollers to reduce the space occupied at the belt tensioning point and facilitate arrangement.

[0046] To facilitate the manufacture of the counterweight, the counterweight 802 includes an iron box 811 and a concrete block 812 poured inside the iron box 811. The front end of the iron box 811 is provided with a pouring port 813, and the top surface is set as a slope. A V-shaped collecting groove 814 is set on the slope. The lowest end of the V-shaped collecting groove 814 is connected to a drainage pipe 815. The counterweight uses an iron box and iron filings to arrange concrete blocks inside, which is convenient to manufacture. Moreover, the internal filling amount can be adjusted to control the required tension. The top surface is set with a slope and a V-shaped collecting groove, which facilitates the drainage of cement dripping onto the slope to a lower place for treatment through the drainage pipe.

[0047] To facilitate the installation of the counterweight and ensure reliable support, the tensioning frame 804 has a U-shaped frame structure. Two bearing seats 816 are fixedly connected to the two top ends, and multiple longitudinal support beams are connected to the bottom crossbeam. The multiple longitudinal support beams and the crossbeam are all fixedly connected to the bottom of the counterweight 802. The U-shaped tensioning frame structure is simple and is fixed to the side and bottom of the iron box of the counterweight, which can play a better supporting role. The multiple longitudinal support beams are welded and fixed to the iron box to improve the support strength and rigidity.

[0048] To facilitate the installation of the counterweight, the upper and lower ends of the two guide rods 806 are fixedly connected to the two cantilever beams 817 respectively. The other end of each cantilever beam 817 is fixedly connected to a connecting flange plate 818. The connecting flange plate 818 is fixedly connected to the support column 807 by a clamp 819. The cantilever beams support the guide rods, which makes it easy to install the counterweight away from the support column, thereby avoiding the arrangement of the counterweight block and also making it easy to arrange the belt vertically on the tensioning roller.

[0049] After the belt has run, although the scraper can clean it to some extent, a large amount of debris will still remain on the belt, requiring cleaning to avoid affecting its next use. Therefore, a cleaning device is used for cleaning. Specifically, the concrete horizontal belt conveyor system used for T-beam production also includes a belt cleaning device 9. Figure 6 and 9 As shown in Figure -10, the belt cleaning device 9 includes a cleaning tank 901 and an auxiliary cleaning roller 902. The auxiliary cleaning roller 902 is rotatably connected to the lower end of a vertical cantilever 903. The upper end of the vertical cantilever 903 is fixedly connected to two support piles 904, which are fixedly connected to the ground. The cleaning tank 901 has a water inlet pipe 905 connected near the top and a drain pipe 906 connected to the bottom. The upper end of the cleaning tank 901 is open and connected to the two support piles 904 through a lifting mechanism. A rotating brush 907 is arranged inside the cleaning tank 901. The rotating brush 907 is rotatably connected to the inner wall of the cleaning tank 901 through a rotating shaft and is arranged side by side with the auxiliary cleaning roller 902. The rotating brush 907 is connected to a drive mechanism. Two transition rollers 908 are horizontally arranged above the auxiliary cleaning roller 902 and the tensioning roller 801. The left of the two transition rollers 908 is... One belt is connected to the mounting plate 920 via a bearing seat, and the other on the right is connected to the top of two support piles via a bearing seat. The mounting plate 920 is fixedly connected to two tripods 921, and the two tripods 921 are fixedly connected to the support piles 904. A cleaning box is used to immerse part of the running belt in water for brushing, and water is circulated through inlet and outlet, which greatly improves the cleaning efficiency and effect. A lifting mechanism is used to lift the belt as needed for cleaning. The lifting operation is convenient. The rotating shaft of the rotating brush 907 is connected to the cleaning drive motor 923 via a synchronous belt 922. The cleaning drive motor 923 is fixedly installed on the top of the cleaning box 901 and is off-center to avoid interference with the structure of the U-shaped water-absorbing sponge brush. The synchronous belt drive is stable and reliable. Plastic pulleys can be used for the synchronous belt to avoid damage caused by rust.

[0050] To facilitate the lifting of the cleaning tank, the lifting mechanism includes a winding rope 909, a fixed pulley 910, and a self-locking winding mechanism 911. One end of the winding rope 909 is fixedly connected to the cleaning tank 901, passes over the fixed pulley 910, and connects to the self-locking winding mechanism 911. The fixed pulley 910 is fixedly connected to a horizontal shaft fixed between two support posts 904. The self-locking winding mechanism 911 is fixedly connected to the ground. The cleaning tank 901 is connected to a guide rail frame 919 via two vertically arranged left-right sliding guide rail pairs 918. The guide rail frame 919 is fixedly connected to the two support posts 904. The cleaning tank is lifted using the winding rope and the self-locking mechanism. The system features a descent control mechanism, convenient and quick operation, reliable and stable connection, and an empty water tank during lifting, saving time and effort. Water is replenished to the set height after reaching the set position, and then added and drained simultaneously for more thorough cleaning. The self-locking winding mechanism 911 includes a self-locking worm gear transmission and a winding drum. Both ends of the winding drum are fixed to the ground via bearing seats, and the winding drum is connected to the output shaft of the worm gear transmission via a drive shaft. The worm gear transmission is fixed to the ground, and its input shaft is connected to a rotating handle, which enables winding. Its self-locking worm gear transmission allows for on-the-spot positioning, saving time and effort.

[0051] After cleaning, belts easily absorb water on their surface, requiring wiping to absorb the moisture and reduce the amount of water carried on the belt. Drying is slow, so a U-shaped absorbent sponge brush (913) is recommended. Figure 6 and 9-10, the belt cleaning device 9 also includes two U-shaped absorbent sponge brushes 913. Each U-shaped absorbent sponge brush 913 includes a U-shaped outer shell 912 and a sponge layer fixedly connected to the inside of the U-shaped outer shell 912. The ends are flared to facilitate the insertion of the U-shaped absorbent sponge brush 913 onto the belt. The two U-shaped absorbent sponge brushes 913 are staggered on both sides of the cleaning tank 901 and can rotate to elastically clamp the cleaned belt. This staggered arrangement covers the entire width of the belt, thus achieving better water absorption. The outer ends of the U-shaped absorbent sponge brushes 913 are hinged to the outer edge of the top of the cleaning tank 901. The outer casing is equipped with an integrated extension swing rod 914. The extension swing rod 914 forms an acute angle with the U-shaped water-absorbing sponge brush 913 along its length. A compression spring 915 is installed between the extension swing rod 914 and the side wall of the cleaning tank 901. A pull rope 916 is fixedly connected to the end of the extension swing rod 914. A hanging ring 917 is installed at the free end of the pull rope 916. The hanging ring 917 can be hooked onto the hook on the support pile 904, and at this time, it can keep the U-shaped water-absorbing sponge brush 913 open. The distance between the two U-shaped water-absorbing sponge brushes 913 is greater than the maximum width of the auxiliary cleaning roller 902. The U-shaped water-absorbing sponge brushes are used to clean the water tank after it is lifted. After washing, the system can absorb water from the belt, reducing moisture on the belt surface and improving cleaning efficiency. The swing arm operation effectively prevents interference between the sponge brushes and the belt during the cleaning tank's ascent. Once the set position is reached, releasing the pull rope allows the spring force to return the two sponge brushes to their elastic position on the belt, making operation convenient and quick. The U-shaped absorbent sponge brush (913) has a width of 100-200mm, ensuring better absorption. Its sufficient width allows for rapid water absorption at the bottom, followed by gradual absorption into the less absorbent top section, effectively removing moisture from the belt surface. The belt cleaning system can remove most of the water absorbed by the belt within one cycle, and improve drying efficiency by allowing it to air dry naturally. The water inlet is set with a row of nozzles 923, which are connected in parallel to the main pipe 924. The main pipe 924 is connected to the water inlet pipe and is fixedly connected to the inside of the cleaning tank near the top by a clamp, ensuring that the nozzles are arranged downwards. The inclined water jet is sprayed onto the output belt section that is not immersed in water. For the belt after brushing, a secondary rinse is achieved for a more thorough cleaning. The clamp connection allows for easy angle adjustment to find the optimal rinsing angle. The water inlet pipe is connected to the water pump to ensure stable water pressure.

[0052] To achieve better scraping results on the concrete surface indicated by the belt, such as Figure 12-13As shown, the concrete horizontal belt conveyor system also includes an upper belt discharge scraper 10. The discharge scraper 10 includes a first scraper plate 1001 and a second scraper plate 1002. The first scraper plate 1001 and the second scraper plate 1002 are made of rigid plastic plates and are fixedly connected to both sides of an inverted T-shaped metal support plate 1003 with a gap. Flexible rubber scraper blades 1004 are arranged along the length of the top of the first scraper plate 1001 and the second scraper plate 1002. The metal support plate 1003 is fixedly connected to two swing rods 1005 near both ends. The two swing rods 1005 are hinged to the side wall of the discharge hopper 1006 near the middle and their ends extend beyond the rear end of the side wall of the discharge hopper 1006. A fixed drive shaft 1008 is connected, with its middle section hinged to the cylinder rod of a cylinder 1007. The cylinder seat of the cylinder 1007 is hinged to the side wall of the discharge hopper 1006, and this hinge point is located below the hinge point between the swing rod 1005 and the side wall. After the cylinder 1007 extends, it can simultaneously press the first layer scraper 1001 and the second layer scraper 1002 against the lower left of the discharge end of the upper belt conveyor. The use of double-layer scraper plates can achieve better scraping of mud. The hard plastic scraper plates provide better support rigidity, and when the flexible plastic scraper blades contact the belt, they can more stably scrape the concrete adhering to the belt, ensuring stable and reliable scraping. On the other hand, they can better reduce... To mitigate the impact of vibration and prevent excessive vibration from degrading the scraping effect, a T-shaped metal support plate is used. This provides spacing and facilitates installation. Corrosion-resistant bolts (110) pass through the two scraper blades and the T-shaped metal support plate, and are then secured with corrosion-resistant nuts. The two scraper blades and the T-shaped metal support plate are also positioned using locating pins (1011). The scraper blades have stepped holes for accommodating the bolt heads and nuts. Sealing the stepped holes with a cap prevents cement mortar from entering and corroding the bolts. A cylinder controls the extension and retraction of the scraper blades during use or cleaning. This design ensures that if water enters the scraper blades after contact, the scraper blade ends can be protected. The cylinder provides both wiping and rinsing functions for the scraper blades. Furthermore, the cylinder's extension and retraction maintain a certain elasticity, preventing poor stability in the scraper blade contact caused by the fixing method. A dust cover 1009 is installed above the cylinder to prevent cement mortar from falling and protect the cylinder. The top surface of the metal support plate 1003 has symmetrical slopes on both sides, facilitating the automatic collection and outflow of accumulated slurry. Vibration during belt movement also helps the slurry slide off. The flexible rubber scraper blade 1004 has a cylindrical structure with a T-shaped strip 1012 at the bottom. The T-shaped strip 1012 elastically presses into the T-groove at the top of the first scraper blade 1001 or the second scraper blade 1002, making installation convenient and quick.

[0053] like Figure 14-15As shown, to ensure stable unloading of material from the lower belt into the placing boom, the concrete horizontal belt conveyor system also includes a lower traveling belt positioning device. This device comprises a brake shoe positioning device 11 and a touch switch 12. Two brake shoe positioning devices 11 are installed on the conveyor frame 5 to lock the front and rear rows of traveling wheels 14. The touch switch 12 is installed on one side of the traveling track 13. When the touch switch is activated, the brake shoe positioning device 11 positions one row of traveling wheels in the traveling direction based on the touch signal. After positioning, another device positions the other row of traveling wheels. Positioning both rows of traveling wheels effectively limits the movement of the traveling belt, preventing displacement during material unloading. The device enables fixed-point conveying and unloading of materials into the fabric placing machine, improving unloading reliability. The brake shoe positioning device 11 includes a shoe block 1101 and a vertical lifting drive mechanism 1102. The shoe block 1101 is vertically slidably connected in a sliding groove 1103. After moving upwards, the arc-shaped surface of the shoe block can fit against the surface of the traveling wheel. The bottom is connected to the vertical lifting drive mechanism 1102, which, by driving the shoe block upwards, can limit the movement of the traveling wheel. After the shoe block moves downwards, it is lower than the top rail surface of the traveling guide rail. The shoe block 1101 is provided with a vertical strip hole 1104, and two guide pins 1105 are vertically spaced apart in the vertical strip hole 1104 and fixedly connected to the two guide pins 1105, which are fixedly connected to the fixed frame 1106. The upper fixed frame 1106 is fixedly connected to the notch of the traveling guide rail 13. It uses double guide pins to allow for qualitative movement of the iron filings, improving the accuracy of the qualitative movement and preventing detachment. The upper and lower lifting drive mechanism 1102 includes a pressure rod 1107, a first connecting rod 1108, a second connecting rod 1109, and a driving hydraulic cylinder 1110. One end of the pressure rod 1107 abuts against the bottom of the iron filings 1101 and is hinged to the bottom of the traveling guide rail 13 near the center via a hinge seat 1111. The other end of the pressure rod 1107 is hinged to the first connecting rod 1108, and the other end of the first connecting rod 1108 is hinged to the cylinder rod end of the driving hydraulic cylinder 1110. One end of the second connecting rod 1109 is hinged to the upper middle part of the first connecting rod 1108, and the other end... The end of the hydraulic cylinder 1110 is hinged to the top of the cylinder seat near the cylinder rod. The tail of the hydraulic cylinder 1110 is hinged to the vertical cantilever seat 1112. The upper end of the vertical cantilever seat 1112 is fixedly connected to the bottom of the travel guide rail 13. After the hydraulic cylinder extends, it can move the iron chip block down by the connecting rod. After it retracts, it can move the iron shoe block up. The power mechanism is arranged away from the iron chip block for easy installation. The connecting rod mechanism realizes power transmission, and the force transmission is stable and reliable. It can realize the slow application of force and reduce impact. The pressure rod 1107 is set in the shape of a spoon or is rotatably connected to a roller at the bottom end of the iron shoe block 1101. When it is spoon-shaped, the convex surface is close to the bottom surface of the iron shoe block 1101, which can reduce friction and improve the pressing stability.

[0054] By adopting a horizontal concrete belt conveyor, the concrete conveying time per cubic meter in the original torpedo tank was reduced from 2.63 min / m.3 Reduced to 0.653 min / m 3 This improved the efficiency of concrete transportation by 300% and also reduced slump loss during concrete transportation.

[0055] Torpedo canisters exert concentrated loads on the track, requiring high track strength and resulting in high track costs. Concrete horizontal belt conveyors, on the other hand, use surface stress, which has lower requirements for belt support stiffness and load-bearing capacity, thus offering cost savings.

[0056] Four torpedo containers are installed on the circular track. If one of the torpedo containers malfunctions, the entire concrete transport system becomes unusable, significantly impacting production.

[0057] Torpedo canisters are complex to clean, requiring individual cleaning after each use, which is time-consuming. Belt conveyors, by installing custom-designed scrapers, eliminate the need for cleaning, reducing water waste and wastewater treatment associated with cleaning transport equipment.

[0058] In terms of cost, the total cost of the torpedo tank and running track at the Guangmian Smart Beam Yard was 2.72 million yuan, and the total cost of the belt conveyor was 2.2 million yuan. Cost savings amounted to 520,000 yuan.

[0059] Example 3: A conveying method for a horizontal concrete belt conveyor system used in T-beam production. The method is as follows: After the concrete obtained from the mixing plant is discharged, it is stored in a storage hopper below the discharge port. After the lower short belt conveyor, the lower long belt conveyor and their corresponding covering placing booms are in place, the storage hopper of the mixing plant begins to discharge from the discharge port. The concrete is conveyed from the upper long belt conveyor to the lower long belt conveyor, and from the upper short belt conveyor to the lower short belt conveyor. The lower long belt conveyor and the lower short belt conveyor respectively cover multiple placing booms at a distance and multiple placing booms nearby, and can be positioned in one of the placing booms for unloading.

[0060] The upper short belt conveyor (65m in length) and the lower short belt conveyor (23m in length) are responsible for the concrete transportation and pouring of the nearby No. 1-3 concrete placing booms.

[0061] The upper long belt conveyor (120m long) and the lower long belt conveyor (36m long) are responsible for transporting and pouring concrete for the No. 4-6 concrete placing booms at a distance.

[0062] The upper short belt conveyor and the upper long belt conveyor rotate in the forward direction to complete the concrete transport from the mixing plant to the lower belt.

[0063] The lower short belt conveyor completes the concrete transport from the upper belt to the No. 1, 2 and No. 3 placing booms by reversing the forward and reverse directions.

[0064] The lower long belt conveyor completes the concrete transport from the upper belt to the No. 4, 5 and 6 placing booms by reversing the forward and reverse directions.

[0065] Concrete belt conveyors can simultaneously receive and discharge concrete, and can transport 2.5m of concrete over time. 3 The concrete pouring time was 1.633 min, and the final efficiency was 0.653 min / m. 3 .

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A belt tensioning mechanism for a horizontal concrete conveyor, characterized in that, It includes a tensioning roller (801) and a counterweight (802). The tensioning roller (801) is rotatably connected to the upper end of the tensioning frame (804) via a tensioning shaft (803). The counterweight (802) is fixedly connected to the lower part of the tensioning frame (804). The two sides of the tensioning frame (804) are vertically slidably connected to two guide rods (806) via guide connecting ears (805). The two guide rods (806) are vertically suspended and connected to two support columns (807). The upper ends of the two support columns (807) are fixedly connected to the bottom of the belt frame (808) of the upper short belt conveyor (1) or the upper long belt conveyor (3), and the lower ends are fixedly connected to the ground. The tensioning roller (801) can pull the passing belt (809) downward. Two guide rollers (810) are provided on the belt frame (808). The two guide rollers (810) are located above the two sides of the tensioning roller (801).

2. The belt tensioning mechanism for a horizontal concrete conveyor according to claim 1, characterized in that, The two guide rollers (810) are flush with the idler rollers on the belt frame.

3. The belt tensioning mechanism for a horizontal concrete conveyor according to claim 1, characterized in that, The counterweight (802) includes an iron box (811) and a concrete block (812) poured inside the iron box (811). The front end of the iron box (811) is provided with a pouring port (813), the top surface is a slope, and a V-shaped converging channel (814) is provided on the slope. The lowest end of the V-shaped converging channel (814) is connected to a drainage pipe (815).

4. The belt tensioning mechanism for a horizontal concrete conveyor according to claim 1, characterized in that, The tensioning frame (804) is a U-shaped frame structure with two bearing seats (816) fixedly connected to the two top ends. Multiple longitudinal support beams are connected to the bottom crossbeam, and the multiple longitudinal support beams and crossbeams are fixedly connected to the bottom of the counterweight (802).

5. The belt tensioning mechanism for a horizontal concrete conveyor according to claim 1, characterized in that, The upper and lower ends of the two guide rods (806) are fixedly connected to the two cantilever beams (817) respectively. The other end of each cantilever beam (817) is fixedly connected to a connecting flange plate (818), and the connecting flange plate (818) is fixedly connected to the support column (807) by a clamp (819).

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