Strapping tape storage device

Abstract

The utility model discloses a strapping tape storage device, and relates to the technical field of ceramic tile strapping tape collection, the strapping tape storage device comprises a bottom frame, four corners of the top of the bottom frame are fixedly provided with support rods, and the tops of the support rods are fixedly provided with a top frame. By the adoption of the structure, the device is provided with the winding mechanism, during bundling, a bundling belt penetrates through a winding limiting groove to be connected to the outer surface of a winding wheel in a wound mode, a driving motor in the winding mechanism is started, a movable shaft is driven to rotate through transmission of a chain wheel and a chain, and a first chain wheel at the outer end of the movable shaft synchronously drives all the winding wheels to rotate through the chain; according to the device, the strapping tape can be wound, the driving motor is started reversely when the strapping tape needs to be taken out, the device can wind the strapping tape repeatedly, arrangement is convenient, disordered winding is avoided, the whole device has good stability, convenience is brought to a user, the device is convenient to use under various conditions, and the strapping tape management efficiency in the ceramic tile loading and unloading process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tile strapping collection, in particular to a strapping storage device. Background Art

[0002] Ceramic tiles are a kind of acid and alkali resistant porcelain or stone building decoration material made of refractory metal oxides and semi-metal oxides through grinding, mixing, pressing, glazing, sintering and other processes. Its raw materials mainly include clay, quartz sand, etc. From the appearance, ceramic tiles have a rich variety of styles. There are polished tiles with smooth surfaces. This kind of brick has a high gloss and can create a bright and atmospheric visual effect. It is often used in places such as living rooms; there are also antique tiles with concave and convex textures on the surface. It has a retro charm and good anti-slip performance. It is suitable for use in places where water is easily accumulated, such as bathrooms and kitchens. From the functional point of view, ceramic tiles have good wear resistance and can withstand daily friction and trampling. It is not easy to be damaged after long-term use. It also has excellent anti-fouling properties, stains are not easy to penetrate, and it is relatively easy to clean. Moreover, there are many sizes and specifications of ceramic tiles to choose from to meet the needs of different building spaces and decoration styles.

[0003] At present, after the production and processing of ceramic tiles are completed, they are usually bundled and packaged with strapping tape and then stored. However, during the shipment process after the ceramic tiles are sold, the loading and unloading workers need to first remove the strapping tape on the outer surface of the ceramic tiles, and then restack and load and unload them into the packaging box or the transport vehicle. During this process, the strapping tape is often placed in a disorderly manner in the storage box. Whether it is the strapping tape used for temporary bundling after production is completed or the strapping tape untied before loading, they are all placed in a disorderly state. It can be seen that the existing technology obviously lacks the corresponding structure for temporarily winding and storing the strapping tape. As a result, the strapping tape is easily entangled together, which brings great tediousness and inconvenience to the loading and unloading process of the ceramic tiles. This not only increases the work difficulty and time cost of the loading and unloading workers, but may also affect the work efficiency and operation safety due to the chaotic placement of the strapping tape. Utility Model Content

[0004] In response to the problems mentioned in the background technology, the purpose of the present invention is to provide a strapping storage device to solve the problem that during the application of the existing technology, there is a lack of a convenient winding device for the strapping straps used to temporarily bundle tiles, which causes the strapping straps to be placed in a messy manner and easily entangled during use.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A strapping storage device comprises a bottom frame, support rods are fixedly mounted at the four corners of the top of the bottom frame, a top frame is fixedly mounted on the top of the support rods, slide rails are fixedly mounted on the inner sides of the support rods, sliders are slidably connected to the outer sides of the slide rails, a winding mechanism is fixedly mounted on the inner sides of the sliders, a base frame is fixedly mounted on the inner side of the base frame, a lifting mechanism is fixedly mounted on the inner side of the base frame, the lifting mechanism and the winding mechanism are connected, and a driving assembly is provided inside the lifting mechanism and the winding mechanism;

[0007] The winding mechanism includes a placement rack, which is fixedly installed on the inner side of the slider. The driving component in the winding mechanism is fixedly installed on one side of the placement rack. The interior of the placement rack is rotatably connected with a movable shaft at equal intervals. Both ends of the movable shaft pass through the placement rack. Both ends of the movable shaft are provided with a winding component. Tension adjustment components are fixedly installed on both sides of the placement rack.

[0008] As an optimal technical solution, the lifting mechanism includes a crossbeam and side frames, the side frames are fixedly installed in the middle of both sides of the base, the crossbeam is fixedly installed on one side of the base, the driving assembly in the lifting mechanism is fixedly installed on the top side of the crossbeam, the inner side of the side frame is rotatably connected with a rotating shaft, the output end of the driving assembly in the lifting mechanism is connected to the rotating shaft, both ends of the rotating shaft are fixedly installed with synchronous gears, the middle of both sides of the bottom of the top frame are also rotatably connected with synchronous gears, the outer surface of the synchronous gear is connected to a synchronous toothed belt, the two synchronous gears are connected through a synchronous toothed belt transmission, and the outer side of the tension adjustment assembly is fixedly connected to the synchronous toothed belt.

[0009] As an optimal technical solution, the winding assembly includes a first sprocket and a first chain. The first sprocket is fixedly installed at both ends of the movable shaft. The first chain is transmission-connected to the outer surface of the first sprocket. A winding wheel is fixedly installed on the outer side of the first sprocket. A winding limit groove is opened in the middle of the winding wheel, and the winding limit groove passes through the winding wheel.

[0010] As a preferred technical solution, partitions are fixedly installed at equal intervals on both sides of the bottom of the top frame, and the winding wheel is arranged between the inner sides of each partition.

[0011] As an optimal technical solution, the tension adjustment assembly includes a fixed plate and a concave frame. The fixed plate is fixedly installed on both ends of the synchronous toothed belt by bolts. The inner side of the fixed plate is rotatably connected with an adjusting screw. The adjusting screw and the two sides of the concave frame are threadedly connected. The inner side of the concave frame is fixedly connected to the two sides of the placement rack.

[0012] As an optimal technical solution, the driving assembly includes a driving motor and a third sprocket. The driving motor is respectively fixedly mounted on the top side of the crossbeam plate and the inner side of the placement rack. The output end of the driving motor is fixedly mounted with a second sprocket. The third sprocket in the lifting mechanism is fixedly mounted on one end of the rotating shaft close to the driving motor. The third sprocket in the winding mechanism is fixedly mounted on one end of the movable shaft close to the driving motor. The third sprocket and the second sprocket are connected through a second chain transmission.

[0013] As a preferred technical solution, universal wheel mounting brackets are fixedly mounted at the four corners of the bottom of the bottom frame, and mounting holes are opened at equal intervals on the outer sides of the universal wheel mounting brackets.

[0014] In summary, the present invention has the following beneficial effects:

[0015] First, the driving assembly of the device cooperates with the lifting mechanism. After the driving motor is started, it drives the second sprocket to rotate, and the third sprocket is rotated through the chain transmission, which in turn drives the rotating shaft to rotate. The rotating shaft drives the synchronous gear to rotate, prompting the synchronous toothed belt to transmit on the two synchronous gears. The placement frame of the auxiliary winding mechanism slides up and down on the inside of the support rod. At the same time, the slider slides on the slide rail for guidance to ensure the stable lifting and lowering of the winding mechanism. This design can adapt to people of different heights to load and unload tiles, which is humane and can adapt to transport vehicles of different heights. It greatly improves the convenience of loading and unloading tiles and can play a good role in various scenarios.

[0016] Second, this device is provided with a winding mechanism. When bundling, the strapping belt passes through the winding limit groove and is connected to the outer surface of the winding wheel. The driving motor in the winding mechanism is started, and the movable shaft is driven to rotate through the sprocket chain transmission. The first sprocket at the outer end of the movable shaft synchronously drives each winding wheel to rotate through the chain to realize the winding of the strapping belt. When the strapping belt needs to be taken out, the driving motor is started in the reverse direction. The device can repeatedly wind up the strapping belt, which is convenient for sorting and avoids messy entanglement. It has good overall stability, brings convenience to users, is easy to use in various situations, and improves the strapping belt management efficiency during the loading and unloading of tiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the utility model;

[0019] Figure 3 It is a rear view structural diagram of the utility model;

[0020] Figure 4 This utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 This utility model Figure 1 A schematic diagram of the enlarged structure at point B;

[0022] Figure 6 This utility model Figure 3 Schematic diagram of the enlarged structure at C;

[0023] Figure 7 It is a structural schematic diagram of the tension adjustment component of the utility model.

[0024] Figure markings: 1. bottom frame; 2. support rod; 3. top frame; 4. slide rail; 5. slider; 6. winding mechanism; 61. placement rack; 62. movable shaft; 63. tension adjustment assembly; 631. fixed plate; 632. concave frame; 633. adjusting screw; 64. winding assembly; 641. first sprocket; 642. first chain; 643. winding wheel; 644. winding limit groove; 7. base frame; 8. lifting mechanism; 81. crossbeam; 82. side frame; 83. rotating shaft; 84. synchronous gear; 85. synchronous toothed belt; 9. driving assembly; 91. driving motor; 92. third sprocket; 93. second sprocket; 94. second chain; 10. partition; 11. universal wheel mounting bracket; 12. mounting hole. DETAILED DESCRIPTION

[0025] Example

[0026] refer to Figures 1 to 7 , a strapping storage device of this embodiment includes a bottom frame 1, support rods 2 are fixedly installed at the four corners of the top of the bottom frame 1, a top frame 3 is fixedly installed on the top of the support rod 2, a slide rail 4 is fixedly installed on the inner side of the support rod 2, a slider 5 is slidably connected to the outer side of the slide rail 4, a winding mechanism 6 is fixedly installed on the inner side of the slider 5, a base frame 7 is fixedly installed on the inner side of the support rod 2, a lifting mechanism 8 is fixedly installed on the inner side of the base frame 7, the lifting mechanism 8 and the winding mechanism 6 are connected, and a driving component 9 is provided inside the lifting mechanism 8 and the winding mechanism 6;

[0027] The winding mechanism 6 includes a placement frame 61, which is fixedly mounted on the inner side of the slider 5. The driving component 9 in the winding mechanism 6 is fixedly mounted on one side of the placement frame 61. The interior of the placement frame 61 is rotatably connected with a movable shaft 62 at equal intervals. Both ends of the movable shaft 62 pass through the placement frame 61. Both ends of the movable shaft 62 are provided with a winding component 64. Tension adjustment components 63 are fixedly mounted on both sides of the placement frame 61. The support rod 2 on the top of the bottom frame 1 provides a stable support structure for the entire device. The slide rail 4 on the inner side of the support rod 2 cooperates with the slider 5, so that the winding mechanism 6 can slide up and down smoothly, thereby improving the operating stability of the device. 61 is connected to the support rod 2 through the slider 5, ensuring the firmness of the winding mechanism 6 during the lifting process. The driving component 9 in the placement frame 61 provides power for the winding operation to realize automatic winding. The movable shaft 62 connected by equal-interval rotation makes the winding more uniform and improves the winding efficiency. The winding component 64 at the outer end of the movable shaft 62 can effectively wind the tile strapping belt, avoiding the problem of entanglement caused by the messy placement of the strapping belt, and improving the convenience of the tile loading and unloading process. At the same time, the lifting mechanism 8 can adjust the height of the winding mechanism 6 according to different needs, adapt to operators of different heights and transport vehicles of different heights, further enhancing the practicality and flexibility of the device.

[0028] refer to Figure 1-Figure 7The lifting mechanism 8 includes a crossbeam 81 and a side frame 82. The side frames 82 are fixedly installed in the middle of both sides of the base, the crossbeam 81 is fixedly installed on one side of the base frame 7, the driving assembly 9 in the lifting mechanism 8 is fixedly installed on the top side of the crossbeam 81, and the inner side of the side frame 82 is rotatably connected with the rotating shaft 83. The output end of the driving assembly 9 in the lifting mechanism 8 is connected to the rotating shaft 83. Both ends of the rotating shaft 83 are fixedly installed with synchronous gears 84. The middle of both sides of the bottom of the top frame 3 are also rotatably connected with synchronous gears 84. The outer surface of the synchronous gear 84 is connected to the synchronous toothed belt 85. The two synchronous gears 84 are connected by the synchronous toothed belt 85. The outer side of the tension adjustment assembly 63 is fixedly connected to the synchronous toothed belt 85. The side frames 82 are fixed in the middle of both sides of the base to provide a stable installation support for the rotating shaft 83. The crossbeam 81 is fixed at On one side of the base frame 7, it is convenient to install the drive component 9. The drive component 9 provides power for the rotation of the rotating shaft 83. The synchronous gears 84 at both ends of the rotating shaft 83 rotate under the drive, and the transmission is realized through the synchronous toothed belt 85. The synchronous gears 84 in the middle of the two sides of the bottom of the top frame 3 further ensure the stability of the synchronous toothed belt 85 transmission. The synchronous toothed belt 85 transmission can smoothly drive the winding mechanism 6 connected thereto to move up and down to achieve height adjustment. This lifting method can flexibly adjust the position of the winding mechanism 6 according to different usage requirements, such as adapting to operators of different heights or transport vehicles of different heights, thereby improving the practicality and convenience of the device. At the same time, the synchronous toothed belt 85 has high transmission accuracy, which can ensure the stability and accuracy of the lifting process of the winding mechanism 6, reducing the operational inconvenience and safety hazards caused by shaking or inaccurate position.

[0029] refer to Figure 1-Figure 3The winding assembly 64 includes a first sprocket 641 and a first chain 642. The first sprocket 641 is fixedly mounted on both ends of the movable shaft 62. The first chain 642 is transmission-connected to the outer surface of the first sprocket 641. A winding wheel 643 is fixedly mounted on the outer side of the first sprocket 641. A winding limit groove 644 is opened in the middle of the winding wheel 643. The winding limit groove 644 passes through the winding wheel 643. Partitions 10 are fixedly mounted on both sides of the bottom of the top frame 3 at equal intervals. The winding wheel 643 is arranged between the inner sides of each partition 10. The first sprockets 641 at both ends of the movable shaft 62 are transmission-connected by the first chain 642, ensuring that each winding wheel 643 can rotate synchronously. The winding limit groove 644 opened in the middle of the winding wheel 643 can effectively limit the strapping belt to prevent the strapping belt from shifting or loosening during the winding process, ensuring the neatness of the winding. The partitions 10 fixed at equal intervals on both sides of the bottom of the top frame 3 provide stable support and spacing for the winding wheel 643 to avoid mutual interference between the winding wheels 643 during rotation, and also make the layout of the winding wheel 643 more reasonable, easy to operate and manage. The design of this winding component 64 can effectively roll and organize the tile strapping belt, avoids the disorderly placement of the strapping belt, and improves the convenience and work efficiency of the tile loading and unloading process.

[0030] refer to Figure 7 The tension adjustment assembly 63 includes a fixed plate 631 and a concave frame 632. The fixed plate 631 is fixedly installed at both ends of the synchronous toothed belt 85 by bolts. The inner side of the fixed plate 631 is rotatably connected with an adjusting screw 633. The adjusting screw 633 and the two sides of the concave frame 632 are threadedly connected. The inner side of the concave frame 632 is fixedly connected to the two sides of the placement frame 61. Adjusting the rotation of the adjusting screw 633 can adjust the tension of the synchronous toothed belt 85, so that the synchronous toothed belt 85 can be tightened as a whole, thereby improving its driving stability. The fixed plate 631 is fixed to both ends of the synchronous toothed belt 85 by bolts, providing a stable installation base for the adjusting screw 633. The adjusting screw 633 and The concave frame 632 is threadedly connected on both sides, and the tension of the synchronous toothed belt 85 can be easily adjusted by rotating the adjusting screw 633. When the tension of the synchronous toothed belt 85 is adjusted appropriately, it can be tightened as a whole, thereby improving the driving stability of the synchronous toothed belt 85 during the transmission process. This can ensure that the winding mechanism 6 is more stable and reliable during the lifting process, reduce problems such as jamming and shaking caused by the relaxation of the synchronous toothed belt 85, and improve the operating accuracy and safety of the device. At the same time, this adjustable tension design also enhances the adaptability of the device, and can be adjusted according to different usage conditions and load requirements, further improving the practicality and durability of the device.

[0031] refer to Figure 6The driving assembly 9 includes a driving motor 91 and a third sprocket 92. The driving motor 91 is fixedly mounted on one side of the top of the crossbeam plate 81 and one side of the inner side of the placement rack 61 respectively. The output end of the driving motor 91 is fixedly mounted with a second sprocket 93. The third sprocket 92 in the lifting mechanism 8 is fixedly mounted on one end of the rotating shaft 83 close to the driving motor 91. The third sprocket 92 in the winding mechanism 6 is fixedly mounted on one end of the movable shaft 62 close to the side of the driving motor 91. The third sprocket 92 and the second sprocket 93 are connected by a second chain 94. The driving motor 91 is fixed on one side of the top of the crossbeam plate 81 and one side of the inner side of the placement rack 61 respectively, providing a stable power source for the lifting and winding operations of the device. The output of the driving motor 91 The second sprocket 93 at the end is connected to the rotating shaft 83 and the third sprocket 92 at one end of the movable shaft 62 through a second chain 94. This transmission method is efficient and reliable. In the lifting mechanism 8, the driving motor 91 drives the rotating shaft 83 to rotate through the sprocket chain transmission, thereby realizing the stable lifting and lowering of the winding mechanism 6. The height can be flexibly adjusted according to different needs and adapted to different operating scenarios and transport vehicles. In the winding mechanism 6, the driving motor 91 drives the movable shaft 62 to rotate through the same transmission method, thereby realizing the winding operation of the winding wheel 643 on the strapping strap. The operation is convenient and the degree of automation is high. The design of this driving component 9 makes the operation of the entire device smoother and more stable, thereby improving the working efficiency and practicality of the strapping strap storage device.

[0032] refer to Figure 1-Figure 3 The four corners of the bottom of the bottom frame 1 are fixedly installed with universal wheel mounting brackets 11, and mounting holes 12 are opened at equal intervals on the outside of the universal wheel mounting brackets 11. The universal wheel mounting brackets 11 provide a solid foundation for installing universal wheels, so that the entire device has good mobility. When the position of the device needs to be adjusted, the device can be easily pushed to different working areas, which greatly improves the flexibility and convenience of the device. The mounting holes 12 opened at equal intervals on the outside of the bracket make it convenient to select the appropriate installation method and position to install the universal wheels according to actual needs, thereby enhancing the versatility and adaptability of the device. This design makes it easy to arrange and use the strapping storage device in different working environments, thereby improving work efficiency.

[0033] Principle and advantages of use: By arranging the driving assembly 9 and the lifting mechanism 8 to cooperate with each other, the device can be used during use. By starting the driving motor 91, the driving motor 91 can drive the second sprocket 93 to rotate, and the second sprocket 93 is connected to the third sprocket 92 through the second chain 94. Under this transmission action, the bottom rotating shaft 83 can be driven to rotate by the third sprocket 92. After the rotating shaft 83 rotates, the synchronous gears 84 at both ends can be driven to rotate. The rotation of the synchronous gear 84 will drive the synchronous toothed belt 85 and the synchronous gear 84 at the top to rotate. At this time, the synchronous toothed belt 85 is at the two ends. The transmission is transmitted on a synchronous gear 84, which can assist in pushing the placement frame 61 of the winding mechanism 6 to slide up and down on the inner side of the support rod 2. In this process, the slider 5 slides on the slide rail 4 for guidance, which can promote the stable lifting and lowering of the entire winding mechanism 6. On the one hand, such a design can adapt to people of different heights to load and unload tiles, fully considering the individual differences of operators and improving the humanization of the operation. On the other hand, it is also convenient to adapt to transport vehicles of different heights, greatly improving the convenience of loading and unloading tiles, so that the device can play a good role in different application scenarios.

[0034] By setting up the winding mechanism 6, the device can make the strapping belt pass through the winding limit groove 644 and be wound around the outer surface of the winding wheel 643 during the bundling period. Since the strapping belt has a certain friction force, at this time, by starting the driving motor 91 in the winding mechanism 6, the second sprocket 93 inside the winding mechanism 6 can be driven to cooperate with the second chain 94 to drive the third sprocket 92 to rotate. The third sprocket 92 can drive the movable shaft 62 to rotate. During the rotation of the movable shaft 62, the outer ends of the movable shaft 62 are equipped with the first sprocket 641, and the first sprockets 641 are connected through the first chain. 642 transmission connection, and then it can assist in synchronously driving each winding wheel 643 to rotate synchronously. The winding wheel 643 can reel in the strapping tape by rotating synchronously. At the same time, when the strapping tape needs to be taken out, it is only necessary to start the drive motor 91 to reversely drive the movable shaft 62 to rotate. It can be seen that the device can repeatedly reel in the strapping tape during use, and it is convenient to organize the strapping tape during the overall use, and effectively avoid the phenomenon of the strapping tape being entangled due to its messy placement. During the overall application, the device can have good stability, bring great convenience to the user, and facilitate the use of the device in various situations.

Claims

1. A strapping storage device, comprising a bottom frame, characterized in that: The top four corners of the bottom frame are fixedly mounted with support rods, the top of the support rods is fixedly mounted with a top frame, the inner sides of the support rods are fixedly mounted with slide rails, the outer sides of the slide rails are slidably connected with sliders, the inner sides of the sliders are fixedly mounted with a winding mechanism, the inner lower ends of the support rods are fixedly mounted with a base frame, the inner side of the base frame is fixedly mounted with a lifting mechanism, the lifting mechanism and the winding mechanism are connected, and the lifting mechanism and the winding mechanism are both provided with a driving assembly; The winding mechanism includes a placement rack, which is fixedly installed on the inner side of the slider. The driving component in the winding mechanism is fixedly installed on one side of the placement rack. The interior of the placement rack is rotatably connected with a movable shaft at equal intervals. Both ends of the movable shaft pass through the placement rack. Both ends of the movable shaft are provided with a winding component. Tension adjustment components are fixedly installed on both sides of the placement rack.

2. A strapping storage device according to claim 1, characterized in that: The lifting mechanism includes a crossbeam and side frames, the side frames are fixedly installed in the middle of both sides of the base, the crossbeam is fixedly installed on one side of the base, the driving assembly in the lifting mechanism is fixedly installed on the top side of the crossbeam, the inner side of the side frame is rotatably connected with a rotating shaft, the output end of the driving assembly in the lifting mechanism is connected to the rotating shaft, both ends of the rotating shaft are fixedly installed with synchronous gears, the middle of both sides of the bottom of the top frame are also rotatably connected with synchronous gears, the outer surface of the synchronous gear is connected to a synchronous toothed belt, the two synchronous gears are connected through a synchronous toothed belt transmission, and the outer side of the tension adjustment assembly is fixedly connected to the synchronous toothed belt.

3. The strapping storage device according to claim 1, characterized in that: The winding assembly includes a first sprocket and a first chain. The first sprocket is fixedly installed at both ends of the movable shaft. The first chain is transmission-connected to the outer surface of the first sprocket. A winding wheel is fixedly installed on the outer side of the first sprocket. A winding limit groove is opened in the middle of the winding wheel, and the winding limit groove passes through the winding wheel.

4. The strapping storage device according to claim 3, characterized in that: Partitions are fixedly installed at equal intervals on both sides of the bottom of the top frame, and the winding wheel is arranged between the inner sides of each partition.

5. The strapping storage device according to claim 1, characterized in that: The tension adjustment assembly includes a fixed plate and a concave frame. The fixed plate is fixedly installed on both ends of the synchronous toothed belt by bolts. The inner side of the fixed plate is rotatably connected to an adjusting screw. The adjusting screw and the two sides of the concave frame are threadedly connected. The inner side of the concave frame is fixedly connected to the two sides of the placement rack.

6. The strapping storage device according to claim 1, characterized in that: The driving assembly includes a driving motor and a third sprocket. The driving motor is fixedly mounted on the top side of the beam plate and the inner side of the placement rack, respectively. The output end of the driving motor is fixedly mounted with a second sprocket. The third sprocket in the lifting mechanism is fixedly mounted on one end of the rotating shaft close to the driving motor. The third sprocket in the winding mechanism is fixedly mounted on one end of the movable shaft close to the driving motor. The third sprocket and the second sprocket are connected through a second chain transmission.

7. The strapping storage device according to claim 1, characterized in that: Universal wheel mounting brackets are fixedly mounted at the four corners of the bottom of the bottom frame, and mounting holes are opened at equal intervals on the outer sides of the universal wheel mounting brackets.

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