Auxiliary device for installing chain of scraper box

Abstract

The utility model relates to a scraper box chain installation auxiliary device which comprises a support arranged on the outer side of a tail wheel of a scraper box, the support is composed of a top beam and two stand columns, the bottom of the top beam is fixedly connected with a lifting lug, and a chain block is installed on the lifting lug. A supporting rod is movably installed in the middle of the stand column and fixed to the center of the chain disc in a penetrating mode. The winch is arranged on the outer side of the scraper box head wheel, and a steel wire rope of the winch is connected with the chain end of the chain disc. According to the chain installation auxiliary device provided by the scheme, the blank that a tool convenient to use does not exist in chain installation is filled up, and accurate positioning and stable supporting of the chain are achieved through the device; in the aspect of mechanical principle application, the mechanical principle is ingeniously used for traction and installation operation of the chain, and labor intensity is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of chain installation auxiliary equipment, specifically relating to a scraper box chain installation auxiliary device. Background Technology

[0002] In the existing technology, scraper conveyors are widely used in industries such as metallurgy, building materials, power, chemical, cement, ports, docks, coal, mining, grain and oil, food, and feed. A scraper conveyor is a device that uses a chain to drive several scrapers to continuously transport bulk materials.

[0003] As an important material conveying equipment, the installation of the scraper box chain in a scraper conveyor is always a critical step. Traditional scraper box chain installation mainly relies on manual operation, which has the following drawbacks: First, during manual installation, workers need to expend a lot of physical strength to move the heavy chain. Due to the chain's weight and poor flexibility, problems such as chain slippage and twisting are prone to occur during operation, which can seriously threaten the personal safety of workers. Second, manual installation is inefficient and cannot meet the needs of large-scale production and efficient operation in modern industry. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the manual installation of scraper box chains in the prior art is inefficient and poses a high risk of construction safety.

[0005] The technical solution adopted by the present invention to solve the aforementioned problem is as follows:

[0006] A scraper box chain installation auxiliary device includes a bracket set on the outside of the scraper box tail wheel. The bracket consists of a top beam and two columns. A lifting lug is fixed to the bottom of the top beam, and a hand-operated hoist is installed on the lifting lug. A support rod is movably installed in the middle of the columns and is fixed to the center of the chain disc. The device also includes a winch set on the outside of the scraper box head wheel, with the winch wire rope connected to the chain end of the chain disc.

[0007] Compared with the prior art, the present invention employing the above structure has the following advantages:

[0008] The chain installation auxiliary device provided in this solution fills the gap of having no convenient tools for chain installation. This device enables precise positioning and stable support of the chain. In terms of the application of mechanical principles, it cleverly utilizes mechanical principles for chain traction and installation operations, reducing labor intensity.

[0009] As a preferred option, a further technical solution to the above structure is:

[0010] The connecting plate is welded to the outer surface of the column. The top wall of the connecting plate is provided with an installation groove. The length of the support rod is greater than the distance between the two columns. Both ends of the support rod are installed in the installation grooves of the two connecting plates. The upper part of the rear side wall of the installation groove is a guide slope. The guide slope gradually decreases from the root of the connecting plate away from the column. The lower end of the guide slope is connected to a limiting wall. The limiting wall is set vertically and its lower end is connected to the bottom of the groove. The upper part of the front side wall of the installation groove is provided with a stop tongue protruding towards the guide slope. The lower end of the stop tongue is connected to a baffle wall. The lower end of the baffle wall is connected to the bottom of the groove. The lower side of the end of the stop tongue and the lower end of the guide slope are the narrowest position of the installation groove, and the width of this position matches the diameter of the support rod.

[0011] The beneficial effects obtained from the above features are: this mounting groove structure makes the installation of the support rod convenient and quick, and provides stable and reliable support for the chain disc when releasing the chain.

[0012] The support rod is fitted with bushings at both ends. The outer wall of the bushings has a U-shaped groove. Ball bearings are installed inside the bushings. The outer ring of the ball bearings is fixed to the bushings, and the inner ring of the ball bearings is fixed to the support rod.

[0013] The beneficial effects obtained from the above features are as follows: the U-shaped groove in this example can be easily slid into the mounting groove and has an axial limiting effect on the support rod; the ball bearing has the effect of reducing frictional resistance, making the chain disc release more smoothly when rotating.

[0014] Limiting baffles are provided at both ends of the support rod, and the limiting baffles are located inside the connecting plate.

[0015] The beneficial effects obtained from the above features are: the limiting baffle is used to limit the axial movement of the support rod, so that the axial displacement of the support rod during the relative movement of the mechanism will not cause it to disengage.

[0016] The wire rope of the winch is also equipped with a guide wheel. The guide wheel includes an axle with hubs fixed at both ends. The length of the guide wheel is equal to the width of the chain groove of the scraper box.

[0017] The beneficial effects obtained from the above features are: the guide wheel facilitates the arrangement of the wire rope and makes it easy for it to extend to the tail and connect with the chain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural layout of the present invention;

[0019] Figure 2 This is a schematic diagram of the external structure of the support portion of the present invention;

[0020] Figure 3 This is a diagram of an embodiment of the connecting plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the chain disc of the present invention being installed on the bracket;

[0022] Figure 5 This is a schematic diagram of the wire rope of the winch introduced into the scraper box of the present invention.

[0023] In the diagram: 1. Bracket; 2. Connecting plate; 3. Chain; 4. Scraper box; 5. Winch; 6. Top beam; 7. Column; 701. Outrigger plate; 8. Lifting lug; 9. Hand chain hoist; 10. Support rod; 11. Mounting groove; 12. Chain groove; 13. Guide wheel; 1101. Guide slope; 1102. Limiting wall; 1103. Groove bottom; 1104. Baffle wall; 1105. Stop tongue. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments, which are intended only to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0025] The main problems in the installation of chain 3 in the existing technology are as follows: When installing chain 3, the chain disc is heavy and needs to be transported to the scraper box 4 by a transport vehicle and placed in the position opposite to the tail wheel. Then, the end of chain 3 is pulled to make it enter the chain groove 12 of scraper box 4. Because the chain disc is heavy, it lies flat on the ground. At the position of the chain disc, the chain needs to be released manually one turn at a time. In actual construction, because the entire chain disc 3 is too heavy, the tension on the chain disc fluctuates greatly, making it difficult to pull the chain 3 open. The construction personnel still need to manually open the chain 3, which is especially inconvenient in narrow areas, making the operation extremely time-consuming and labor-intensive during the installation process.

[0026] To address the problem of difficult chain 3 installation in existing technologies, this utility model provides a device that facilitates chain 3 installation. See [link to relevant documentation]. Figures 1 to 5 A scraper box chain installation auxiliary device includes a bracket 1, which is set outside the tail wheel of the scraper box 4 and consists of a top beam 6 and two columns 7. A lifting lug 8 is fixedly connected to the lower side of the top beam 6, and a hand-operated hoist 9 is installed on the lifting lug 8. A support rod 10 is movably installed in the middle of the column 7 and is fixed through and fixed to the center of the chain disc. It also includes a winch 5, which is set outside the head wheel of the scraper box 4, and the wire rope of the winch 5 is connected to the end of the chain disc.

[0027] Optionally, the installation structure of the support rod 10 is as follows: the connecting plate 2 is welded to the outer surface of the column 7, the outer end of the connecting plate 2 is provided with an installation groove 11, the length of the support rod 10 is greater than the distance between the two columns 7, and both ends of the support rod 10 are installed in the installation groove 11 of the two connecting plates 2; the upper part of the rear side wall of the installation groove 11 is a guide slope 1101, the guide slope 1101 gradually decreases from the root of the connecting plate 2 away from the column 7, the lower end of the guide slope 1101 is connected to the limiting wall 1102, the limiting wall 1102 is set vertically and its lower end is connected to the bottom of the groove 1103; the upper part of the front side of the installation groove 11 is provided with a stop tongue 1105 protruding towards the guide slope 1101, the lower end of the stop tongue 1105 is connected to the baffle wall 1104, the lower end of the baffle wall 1104 is connected to the bottom of the groove 1103, the distance between the lower side of the end of the stop tongue 1105 and the lower end of the guide slope 1101 is the narrowest position of the installation groove 11 and the width of this position matches the diameter of the support rod 10.

[0028] Furthermore, the shaft connection point between the support rod 10 and the connecting plate 2 is equipped with measures to reduce friction, thereby ensuring smooth rotation when the chain 3 is released from the chain disc. Specifically, this could be a bearing or the application of lubricating oil. Alternatively, bushings can be installed at both ends of the support rod 10, with U-shaped grooves on the outer walls of the bushings. Ball bearings are installed inside the bushings, with the outer rings of the ball bearings fixedly connected to the bushings and the inner rings fixedly connected to the support rod 10. Optionally, the height of the connecting plate is set according to the height of the tail pulley, ensuring that the chain pulled from the chain disc is collinear with the chain groove 12 of the scraper box.

[0029] Measures to prevent axial movement of the support rod 10 can also be set at both ends of the support rod 10, such as limit plates and support springs, to avoid large axial displacement of the support rod 10, which would affect the chain 3 being guided into the chain disc.

[0030] The support rod 10 of this utility model uses a 50mm diameter round steel rod. Its diameter should not be larger than the center hole of the chain disc to ensure that the support rod 10 can pass through smoothly. The round steel should not be too long, because the longer it is, the smaller the moment of inertia, and the weaker the rod's ability to resist bending deformation. Other materials can also be used to replace the round steel, but it is recommended to use a cylindrical material, otherwise the rotation requirements cannot be met.

[0031] Preferably, the hand chain hoist 9 is a 1t hand chain hoist 9, with two on the left and right, respectively corresponding to the left and right chain grooves 12 of the scraper box 4.

[0032] Both the top beam 6 and the column 7 are made of H-beams and fixed by welding. The lower end of the column 7 is fixed to the support leg plate 701 to enhance structural stability. The width of the support frame 1 should be designed in conjunction with the width of the tail wheel of the scraper box 4. Other materials on site can be used to replace the H-beams, but the replacement materials must meet the corresponding performance requirements. The support leg base plate is made of 20mm thick steel plate to enhance structural stability. Steel plates of different thicknesses or areas can be used to replace the support leg base plate, or other materials can be used, but the replacement materials must meet the corresponding performance requirements.

[0033] The wire rope end of the winch 5 is also equipped with a guide wheel 13. The guide wheel 13 includes an axle, with hubs fixed to both ends of the axle. The length of the guide wheel 13 is equal to the width of the chain groove 12 of the scraper box 4. In actual use, when the winch 5 pulls the scraper chain 3, at least one set of sliding blocks is used, and a 5t winch 5 is sufficient for the on-site use. Generally, the chain disc body weighs 200Kg. When selecting the hand chain hoist 9, a minimum load capacity of not less than 1 ton is sufficient to meet the requirements.

[0034] The specific usage steps are as follows:

[0035] Step 1: Weld the bracket 1, lifting lug 8 and connecting plate 2 according to the design. Install the hand chain hoist 9 on the lifting lug 8, install the support rod 10 on the connecting plate 2, place the bracket 1 at the tail of the scraper box 4, and install the winch 5 at the head of the scraper box 4.

[0036] Step 2: Use lifting tools to transport the chain disc to the bottom of the hand chain hoist 9, lift the chain disc with the hand chain hoist so that the chain disc is upright; then pull out the support rod 10 from the device and insert it into the center of the chain disc, and put both ends of the support rod 10 back on the connecting plate 2.

[0037] Specifically, the chain disc installation process is as follows: The chain disc is transported to the front of the bracket 1 in advance. When the chain disc is lifted by the hand chain hoist 9, the chain disc is located directly below the top beam 6. Due to the large length of the support rod 10, after it is inserted into the chain disc, it will pull the chain disc outward. Due to the gravity of the hand chain hoist 9, the end of the support rod 10 will abut against the side of the column 7. When the hand chain hoist 9 is unloaded, the chain disc descends, and the two ends of the support rod 10 fall on the top of the connecting plate 2. Since the top of the rear side wall of the installation groove 11 is a guide slope 1101, the support rod 10 slides down the guide slope 1101 due to gravity and falls to the bottom of the groove 1103.

[0038] Specifically, when the support rod 10 supports the chain reel to release the chain 3, the support rod 10 presses against the bottom of the groove 1103 due to the weight of the chain reel. As the winch 5 pulls the chain 3, the center of gravity of the chain reel tilts forward. Therefore, although the mounting groove 11 is open, there is no risk of the support rod 10 coming off during use. At the same time, because the distance between the stop tongue 1105 and the guide slope 1101 is set to the minimum distance of the mounting groove 11, even if the equipment output fluctuates during the installation of the chain 3, the support rod 10 will not come off the mounting groove 11. The mounting groove 11 makes installation convenient and reliable.

[0039] Step 3: Using winch 5, wind the wire rope of winch 5 onto the axle of the guide wheel, then insert the guide wheel into the top of the chain disc, allowing the guide wheel to roll to the bottom of the chain disc under its own weight.

[0040] The fourth step is to connect the end of the chain 3 of the chain disc to the guide wheel and pull it with the winch 5 to achieve the purpose of installing the chain 3; two chain discs can be installed on the support rod 10 at the same time, so the left and right chains of the scraper box 4 can be installed at the same time.

[0041] The beneficial effects of this utility model are:

[0042] 1. Easy to operate: The installation and deployment of the chain are simpler, reducing reliance on manpower and greatly improving work efficiency.

[0043] 2. Simple to manufacture: The device has a reasonable structural design and a simplified manufacturing process, which can reduce production costs and shorten the manufacturing cycle.

[0044] 3. Low material waste: The use of economical and practical materials that are easy to find on-site optimizes material use, reduces waste in the production process, and conforms to the principle of sustainable development.

[0045] 4. High applicability: This device is particularly suitable for operation in narrow areas, has a wide range of applications, and can work effectively in a variety of environments.

[0046] 5. High durability: The device is made of wear-resistant materials to ensure its good durability and reliability during long-term use.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A scraper box chain installation auxiliary device, comprising a bracket (1) disposed on the outside of the tail wheel of the scraper box (4), characterized in that: The support (1) consists of a top beam (6) and two columns (7). The bottom of the top beam (6) is fixed with a lifting lug (8), and a hand-operated hoist (9) is installed on the lifting lug (8). A support rod (10) is movably installed in the middle of the column (7), and the support rod (10) is fixed in the center of the chain disc. It also includes a winch (5), which is set outside the head wheel of the scraper box (4). The wire rope of the winch (5) is connected to the end of the chain (3) disc of the chain disc.

2. The scraper box chain installation auxiliary device according to claim 1, characterized in that: The connecting plate (2) is welded to the outer surface of the column (7). The top wall of the connecting plate (2) is provided with an installation groove (11). The length of the support rod (10) is greater than the distance between the two columns (7). Both ends of the support rod (10) are installed in the installation groove (11) of the two connecting plates (2). The upper part of the rear side wall of the installation groove (11) is a guide slope (1101). The guide slope (1101) gradually decreases from the root of the connecting plate (2) away from the column (7). The lower end of the guide slope (1101) is connected to the limiting wall (1102). The limiting wall (1102) is set vertically and its lower end is connected to the bottom of the groove (1103); the upper part of the front side wall of the mounting groove (11) is provided with a tongue (1105) protruding towards the guide slope (1101), the lower end of the tongue (1105) is connected to the baffle (1104), the lower end of the baffle (1104) is connected to the bottom of the groove (1103), the lower side of the end of the tongue (1105) and the lower end of the guide slope (1101) are the narrowest position of the mounting groove (11) and the width of this position matches the diameter of the support rod (10).

3. The scraper box chain installation auxiliary device according to claim 1, characterized in that: The support rod (10) is fitted with bushings at both ends. The outer wall of the bushing is provided with a U-shaped groove. A ball bearing is installed inside the bushing. The outer ring of the ball bearing is fixed to the bushing, and the inner ring of the ball bearing is fixed to the support rod (10).

4. The scraper box chain installation auxiliary device according to claim 1, characterized in that: The support rod (10) has limit plates at both ends, and the limit plates are located inside the connecting plate (2).

5. The scraper box chain installation auxiliary device according to claim 1, characterized in that: The wire rope end of the winch (5) is also equipped with a guide wheel. The guide wheel includes an axle, and the two ends of the axle are fixed to hubs. The length of the guide wheel is equal to the width of the chain (3) groove of the scraper box (4).

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