Elevator for steel coil

Abstract

The invention discloses an elevator for a steel coil, and belongs to the technical field of steel coil packaging equipment. The elevator comprises a supporting machine frame, the supporting machine frame comprises a stand column and a base, the base is of a frame type structure and is supported at the top of the stand column in an offset mode in the horizontal direction, and a first containing groove penetrating in the vertical direction is formed in the middle of a base frame; the vertical moving module comprises a fixed frame and a lifting arm, the fixed frame is fixedly installed in the first containing groove in the vertical direction, a second containing groove is defined by the fixed frame, and the lifting arm can be installed in the second containing groove in an up-down sliding mode; the horizontal moving module comprises a telescopic arm and a horizontal sliding frame, the horizontal sliding frame penetrates through the second containing groove in the horizontal direction and is fixedly connected with the lifting arm, and the telescopic arm is slidably installed in the horizontal sliding frame in the horizontal direction. According to the elevator, the layout of the vertical moving module and the horizontal moving module in the elevator is optimally designed, so that the stability of the elevator can be remarkably improved, and the elevator occupies a small space.

Description

Technical Field

[0001] The present invention relates to the technical field of steel coil packaging equipment, and more specifically, to a hoist for steel coils. Background Art

[0002] Galvanized steel coils pass through a color coating production line to be processed into surface-painted strip steel that meets customer requirements. The coiler winds the strip steel into color strip steel coils with different coil diameters. The steel coils are sent to a packing walking beam by a discharging trolley, and the walking beam sends the steel coils to the saddles corresponding to the steel coil hoist. The hoist lifts the steel coils to a specified height according to different coil diameters. During the packing process, the bottom of the steel coil needs to be lifted a certain height from the saddle so that manual or machine can pack the steel coil. After the steel coil is packed, the hoist falls back to place the steel coil on the saddle, and then its telescopic arm retracts, and the walking beam transports the packed steel coil forward.

[0003] In existing steel coil hoists, the motion transmission between the lifting frame and the telescopic arm generally adopts a guide wheel structure. The guide wheel has a line contact with the steel rope, so the guide wheel is prone to wear and needs to be frequently replaced. Moreover, since the guide wheel is externally placed, foreign objects are likely to enter it, resulting in the jamming of the guide wheel.

[0004] In addition, although other structures are also used for power transmission in the lifting frame or the telescopic arm of existing steel coil hoists, such as slider rails, gear racks and other mechanisms. However, existing hoists generally have problems of relatively large occupied volume or poor structural stability.

[0005] For example, the Chinese patent application case with the application number 2022100783307 discloses a steel coil packing mobile hoist, which includes a track steel coil support frame, a track, a mobile trolley, a slideway support frame, a steel coil lifting device, etc. The track is arranged on the inner surface of the device, and a sliding mobile trolley is arranged on the track surface. Slideway supports are arranged on both sides of the mobile trolley. The hydraulic cylinder of the steel coil lifting device is fixed on the hydraulic cylinder support beam of the mobile trolley through a bearing seat. The upper end of the hydraulic cylinder is connected to the support of the steel coil lifting device. A horizontally placed cross beam is arranged through a column above the mobile trolley, and steel coil left and right suspension beams are respectively arranged on the cross beam. The lifting of the entire steel coil lifting device and the steel coil on the saddle is driven by the lifting of the hydraulic cylinder; the mobile trolley drives the steel coil lifting device and the steel coil to move on the track. When the mobile trolley drives the steel coil to move to the position where two-thirds of the steel coil eye passes through the left and right suspension beams of the steel coil, the hydraulic drive system controls the hydraulic cylinder to descend, and the steel coil is hung on the left suspension beam, and the packing worker starts to pack this steel coil; at the same time, the mobile trolley starts to move to the right to the initial position, and another steel coil is moved and hung on the right suspension beam in the same way. In this way, simultaneous operation on both sides can improve the packing efficiency. The hoist in this application case occupies a relatively large space along the extending direction of the track.

[0006] For another example, in the Chinese patent application case with the application number 2022101791091, it discloses a hoist, which includes a workbench. A horizontal guide rail is provided on the upper surface of the workbench, and a horizontal moving mechanism is slidably connected to the horizontal guide rail. One side side wall of the horizontal moving mechanism is fixedly connected by bolts to a vertical guide rail, and a vertical moving mechanism is provided on the vertical guide rail. Although the hoist in this application case occupies a relatively small volume, its lifting stability is poor in a heavy-load environment. Summary of the Invention

[0007] 1. Technical problems to be solved

[0008] Aiming at the technical problems existing in the existing steel coil hoist, such as large occupied space, poor stability, and easy wear and jamming of the guide wheels in the guide wheel type hoist, the present invention provides a hoist for steel coils. Through the optimized design of the layout of the vertical moving module and the horizontal moving module in the hoist, and the adoption of non-guide wheel type transmission, its stability can be significantly improved, and the occupied space is relatively small.

[0009] 2. Technical solutions adopted

[0010] To achieve the above object, the technical solution provided by the present invention is as follows:

[0011] A hoist for steel coils, including: a support frame, the support frame includes columns and a base. The base is a frame structure, which is horizontally offset and supported on the top of the columns, and a first accommodation groove penetrating in the vertical direction is formed in the middle of the base frame; a vertical moving module, the vertical moving module includes a fixed frame and a lifting arm. The fixed frame is fixedly installed inside the first accommodation groove in the vertical direction, and a second accommodation groove is formed around the fixed frame. The lifting arm is slidably installed up and down in the second accommodation groove; and a horizontal moving module, the horizontal moving module includes a telescopic arm and a horizontal sliding frame. The horizontal sliding frame passes through the second accommodation groove in the horizontal direction and is fixedly connected to the lifting arm. The telescopic arm is slidably installed inside the horizontal sliding frame in the horizontal direction.

[0012] Further, the lifting arm includes an upper lifting frame and a lower lifting frame located below it. The horizontal sliding frame is fixedly installed between the upper lifting frame and the lower lifting frame, and the three are arranged in a cross shape.

[0013] Further, the two ends of the horizontal sliding frame are asymmetrically distributed relative to the lifting arm, and the distance between the end of the horizontal sliding frame close to the steel coil to be lifted and the lifting arm is less than the distance between the other end and the lifting arm; and / or the vertical moving module further includes a first hydraulic cylinder, and the first hydraulic cylinder is used to drive the lifting arm to perform lifting motion.

[0014] Furthermore, the fixed frame includes an upper sliding frame and a lower sliding frame spaced apart in the vertical direction. The upper sliding frame and the lower sliding frame are surrounded to form a rectangular accommodating groove. The upper sliding frame and the lower sliding frame are fixedly connected correspondingly by two parallel and oppositely arranged connecting vertical plates; the upper lifting frame and the lower lifting frame are respectively slidably installed inside the upper sliding frame and the lower sliding frame.

[0015] Furthermore, the inner side walls of the rectangular receiving grooves in the upper sliding frame and the lower sliding frame are all provided with self-lubricating first slide plates, and the outer side walls of the upper lifting frame and the lower lifting frame are provided with first slide bars corresponding to the first slide plates.

[0016] Furthermore, a groove is provided on the outer surface of the first slide bar, and the side wall surface where the groove is located in the first slide bar contacts the first slide plate; and / or the outer wall of the upper lifting frame and the inner wall of the upper sliding frame, and the outer wall of the lower lifting frame and the inner wall of the lower sliding frame all correspond to each other; and / or a first protective frame is also provided at the bottom of the lower sliding frame.

[0017] Furthermore, the telescopic arm includes a telescopic frame, which is slidably arranged inside the horizontal sliding frame; the horizontal sliding frame surrounds a third rectangular accommodating groove, and second sliding strips are arranged around the inner side walls of the third accommodating groove, and the outer side wall of the telescopic frame is provided with a self-lubricating second slide corresponding to the second slide.

[0018] Furthermore, the inner wall of the horizontal sliding frame matches the outer wall of the telescopic frame; and / or the horizontal moving module also includes a second hydraulic cylinder, the cylinder body of the second hydraulic cylinder is installed inside the horizontal sliding frame, and the second hydraulic cylinder is used to drive the telescopic frame to slide horizontally; and / or the end of the telescopic frame used to receive the steel coil is provided with an anti-collision mechanism, and a pad is provided on the upper surface of the end; and / or a second protective frame is provided at the end of the horizontal sliding frame away from the telescopic frame.

[0019] Furthermore, the other end of the base away from the column is offset and supported on the foundation.

[0020] Furthermore, the vertical movable module also includes a connecting bottom plate, which is sleeved on the outside of the fixed frame, and the fixed frame is fixedly installed in the first accommodating groove through the connecting bottom plate.

[0021] 3. Beneficial technical effects

[0022] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0023] (1) The present invention optimizes the layout of the vertical movement module and the horizontal movement module. Specifically, the lifting arm is slidably mounted vertically inside the second receiving groove of the fixed frame, and the horizontal sliding frame in the horizontal movement module passes through the second receiving groove horizontally and is fixedly connected to the lifting arm. This not only effectively reduces the occupied space of the equipment, but also improves the stability of the lifting arm sliding vertically relative to the fixed frame. In addition, it is beneficial to improve the stability of the telescopic arm sliding along the horizontal sliding frame. More importantly, during the horizontal sliding process of the telescopic arm relative to the horizontal sliding frame, it is beneficial to reduce the offset and overhang problems of the horizontal movement module and the telescopic arm therein.

[0024] (2) The present invention further optimizes the relative position between the horizontal sliding frame and the upper lifting frame. The two ends of the horizontal sliding frame are asymmetrically distributed relative to the lifting arm, and the distance between the end of the horizontal sliding frame close to the steel coil to be lifted and the lifting arm is less than the distance between the other end and the lifting arm. When the telescopic arm retracts to the initial state, taking the intersection point of the horizontal sliding frame and the upper lifting frame as the center intersection point, the mass ratio of the part from the end of the horizontal sliding frame in the horizontal movement module close to the steel coil to be lifted to the intersection point in its whole is relatively small. As the telescopic arm slides horizontally towards the steel coil to be lifted, the mass distribution on both sides of the horizontal direction of the intersection point of the horizontal movement module gradually balances, which is beneficial to further reducing the offset and overhang problems of the horizontal movement module.

[0025] (3) The present invention further optimizes the sliding transmission method between the upper lifting frame and the fixed frame, adopting the sliding method of the first sliding strip cooperating with the self-lubricating first sliding plate. On the one hand, compared with the structure of sliding with guide wheels, the sliding contact area is increased, which helps to reduce the pressure per unit area and reduce wear. On the other hand, compared with the traditional method of cooperating with linear guide rails and sliders, the thickness is smaller, no lubricant is required, the pollution of lubricating oil or grease is reduced, and the investment cost is reduced. Further, the outer surface of the first sliding strip is provided with grooves, and the side wall surface where the grooves are located in the first sliding strip contacts the first sliding plate, which not only facilitates the storage of self-lubricating powder, but also can prevent adhesion between the first sliding strip and the first sliding plate due to the large pressure during the lifting of the steel coil, improving the lubrication effect. Furthermore, the sliding transmission method between the telescopic arm and the horizontal sliding frame is also optimized, adopting the sliding method of the second sliding strip cooperating with the second sliding plate with self-lubricating function, reducing the pollution of lubricating oil to the environment.

[0026] (4) The present invention further optimizes the driving components in the vertical movement module and the horizontal movement module. Specifically, the vertical movement module and the horizontal movement module are respectively driven by the first hydraulic cylinder and the second hydraulic cylinder. Compared with the drive of the traditional reduction motor, the structure is compact, the positioning is accurate, and the operation is stable. Description of the Drawings

[0027] Figure 1 Schematic three - dimensional structure diagram of the hoist for steel coils in the embodiment of the present invention.

[0028] Figure 2 Front view schematic diagram of the hoist for steel coils in the embodiment of the present invention.

[0029] Figure 3 In the embodiment of the present invention Figure 1 Left - view structure schematic diagram.

[0030] Figure 4 A - A cross - sectional view schematic diagram of the hoist for steel coils in the embodiment of the present invention.

[0031] Figure 5 Schematic three - dimensional structure diagram of the fixed frame in the embodiment of the present invention.

[0032] Figure 6 Schematic three - dimensional structure diagram of the lifting arm in the embodiment of the present invention.

[0033] Figure 7 Schematic three - dimensional structure diagram of the first slide bar in the embodiment of the present invention.

[0034] Figure 8 Schematic three - dimensional structure diagram of the telescopic arm in the embodiment of the present invention.

[0035] Figure 9 Schematic three - dimensional structure diagram of the base in the embodiment of the present invention.

[0036] Figure 10 Schematic three - dimensional structure diagram of the anti - collision mechanism in the embodiment of the present invention.

[0037] Figure 11 In the embodiment of the present invention Figure 10 Schematic plan - view structure diagram of a certain perspective.

[0038] Figure 12 In the embodiment of the present invention Figure 11 Cross - sectional structure schematic diagram.

[0039] Label description:

[0040] 1. Support frame; 101. Column; 102. Base; 1021. First accommodation groove;

[0041] 2. Fixed frame; 201. Connecting bottom plate; 202. Connecting vertical plate; 203. Upper sliding frame; 204. Lower sliding frame; 205. First sliding plate; 206. First protective frame; 207. Reinforcing rib plate; 208. Second accommodation groove;

[0042] 3. Lifting arm; 301. First hydraulic cylinder; 302. Intermediate support; 303. Upper lifting frame; 304. Lower lifting frame; 305. First sliding bar; 306. Horizontal sliding frame; 3061. Third receiving groove; 307. Second sliding bar; 308. Second protective frame;

[0043] 4. Telescopic arm; 401. Telescopic frame; 402. Second hydraulic cylinder; 403. Second sliding plate; 405. Spacer block; 406. Anti-collision mechanism; 4061. Front push plate; 4062. Guide rod; 4063. Mounting seat; 4064. Proximity switch;

[0044] 5. Semi-saddle;

[0045] 6. Foundation;

[0046] 7. Fixed saddle. Detailed implementation manner

[0047] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0048] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that the present invention can implement.

[0049] Regarding the description of directions, the "lateral" and "longitudinal" referred to in the following embodiments are orthogonal to form a horizontal plane. Among them, the "lateral" specifically refers to the horizontal direction of the telescopic arm 4 relative to the horizontal sliding frame 306, and the "longitudinal" refers to the horizontal direction perpendicular to the above "lateral". The so-called "vertical, vertical direction and height direction" all refer to the direction perpendicular to the above horizontal plane.

[0050] The steel coil hoist is generally used for the hoisting process with low speed, heavy load and short load travel. The short load travel is specifically reflected in: during the hoisting process, when the telescopic arm 4 extends into the center of the steel coil, the lifting arm 3 moves in the vertical direction and drives the telescopic arm to move synchronously. Then, when the telescopic arm 4 touches the inner wall of the steel coil, before the telescopic arm 4 touches the inner wall of the steel coil, the hoist does not receive the acting force of the hoisting load. After the telescopic arm 4 touches the inner wall of the steel coil, it only needs to lift the steel coil to a certain height from the saddle. Therefore, the travel of the hoisting process under load is relatively small.

[0051] As shown Figures 1-4 in the figure, this embodiment provides a hoist for steel coils, including a support frame 1. The support frame 1 includes columns 101 and a base 102. The base 102 is a rectangular frame structure; it is offset and supported at the top of the columns 101 in the horizontal direction; and a first accommodation groove 1021 penetrating in the vertical direction is formed in the middle of the base 102 frame; a vertical movement module, the vertical movement module includes a fixed frame 2 and a lifting arm 3. The fixed frame 2 is fixedly installed inside the first accommodation groove 1021 along the vertical direction, and a second accommodation groove 208 is formed around the fixed frame 2; the lifting arm 3 is slidably installed up and down inside the second accommodation groove 208; and a horizontal movement module, the horizontal movement module includes a telescopic arm 4 and a horizontal sliding frame 306. The horizontal sliding frame 306 passes through the second accommodation groove 208 in the horizontal direction and is fixedly connected to the lifting arm 3. The telescopic arm 4 is slidably installed inside the horizontal sliding frame 306 in the horizontal direction.

[0052] In this embodiment, by fixedly installing the fixed frame 2 inside the first accommodation groove 1021, the stability of the connection between the fixed frame 2 and the base 102 is improved, providing a stable support foundation for the hoist. Moreover, the lifting arm 3 is slidably arranged vertically inside the second accommodation groove 208; on the one hand, compared with the sliding arrangement of the lifting arm 3 between two vertical guide rails, the occupied space of the equipment can be effectively reduced; on the other hand, compared with the sliding arrangement of the lifting arm 3 outside the vertical guide rails, the stability of the lifting arm 3 sliding vertically relative to the fixed frame 2 can be improved. In addition, the horizontal sliding frame 306 is fixedly connected to the lifting arm 3, which is beneficial to improving the stability of the lifting arm 3 driving the horizontal movement module to slide vertically; the horizontal sliding frame 306 is fixedly arranged and serves as the sliding cavity of the telescopic arm 4, which is not only beneficial to improving the stability of the telescopic arm 4 sliding along the horizontal sliding frame 306, but more importantly, is beneficial to reducing the offset and overhang problems of the horizontal movement module and the telescopic arm 4 therein.

[0053] It should be understood that the first accommodation groove 1021 in the base 102 can be a cavity structure such as a rectangular cavity or a cylindrical cavity. The rectangular accommodation groove is convenient for processing and assembly, so it is a preferred design. The first accommodation groove 1021 does not limit that its side walls must be open or closed, only that it can form a circumferential support for the components installed inside it. The selection of the second accommodation groove 208 in the fixed frame 2 is similar to the selection of the first accommodation groove 1021 in the base 102, and the telescopic arm 4 is slidably installed inside the horizontal sliding frame 306 in the horizontal direction. The selection of the third accommodation groove 3061 is similar to the selection of the first accommodation groove 1021 in the base 102. Among the accommodation grooves mentioned in the following embodiments, except for the accommodation grooves specifically defining their cavity shapes, the selection of the remaining accommodation grooves is similar to the selection of the first accommodation groove 1021 in the base 102.

[0054] As a preferred embodiment of the lifting arm 3, the lifting arm 3 includes an upper lifting frame 303 and a lower lifting frame 304 located below it. The horizontal sliding frame 306 is fixedly installed between the upper lifting frame 303 and the lower lifting frame 304, and the three are arranged in a cross shape. Correspondingly, both the upper lifting frame 303 and the lower lifting frame 304 are slidably installed vertically inside the second receiving groove 208.

[0055] Among them, the lifting arm 3 is divided into an upper lifting frame 303 and a lower lifting frame 304. The upper lifting frame 303 is correspondingly arranged above the lower lifting frame 304, and the horizontal sliding frame 306 is located between the upper lifting frame 303 and the lower lifting frame 304, which not only improves the stability of the fixed connection between the horizontal sliding frame 306 and the lifting arm 3, but also further improves the smoothness of the horizontal sliding frame 306 moving vertically along with the lifting arm 3. Preferably, the dimensions of the upper lifting frame 303 and the lower lifting frame 304 in the height direction are substantially the same, further improving the symmetry of the cross shape.

[0056] In the scheme where the horizontal sliding frame 306, the upper lifting frame 303 and the lower lifting frame 304 are arranged in a cross shape, the two ends of the horizontal sliding frame 306 are asymmetrically distributed relative to the lifting arm 3, and the distance between the end of the horizontal sliding frame 306 close to the steel coil to be lifted and the lifting arm 3 is less than the distance between the other end and the lifting arm 3, that is, the distance between the end of the horizontal sliding frame 306 close to the steel coil to be lifted and the lifting arm 3 is less than the distance between the other end of the horizontal sliding frame 306 and the lifting arm 3. That is to say, taking the intersection point of the horizontal sliding frame 306 and the upper lifting frame 303 as the boundary, the distance from one end of the horizontal sliding frame 306 to the intersection point is less than the distance from the other end to the intersection point.

[0057] When the telescopic arm 4 slides towards the steel coil to be lifted, the mass distribution on both sides of the intersection point in the horizontal direction gradually balances. Further preferably, when the telescopic arm 4 extends horizontally to the maximum distance, the distances of the horizontal moving module at both ends of the intersection point are substantially the same.

[0058] In some embodiments, the length of the end of the horizontal sliding frame 306 close to the steel coil to be lifted and the intersection point, that is, the distance along the transverse direction between this end and the center of the upper lifting frame 303, only needs to enable the two ends of the horizontal sliding frame 306 to be fixedly connected to the upper lifting frame 303 and the lower lifting frame 304 respectively. Therefore, the end of the horizontal sliding frame 306 close to the steel coil to be lifted only needs to protrude slightly from the upper lifting frame 303 along the transverse direction.

[0059] As a further preferred embodiment of the vertical movement module, the vertical movement module further includes a first hydraulic cylinder 301 for driving the lifting arm 3 to move up and down. Specifically, the first hydraulic cylinder 301 is vertically arranged and fixedly arranged outside the second receiving groove 208, and the movable end of the first hydraulic cylinder 301 is fixedly connected to the top of the upper lifting frame 303. By driving the upper lifting frame 303 with the first hydraulic cylinder 301, the lifting arm 3 can slide relative to the fixed frame 2 in the vertical direction. Using a hydraulic cylinder as the driving member has good movement stability, low noise, and a relatively small equipment volume.

[0060] Specifically, the number of the first hydraulic cylinders 301 is set to two, and the two first hydraulic cylinders 301 are symmetrically installed on both sides outside the second receiving groove 208 along the longitudinal direction, which is beneficial to the symmetry of the forces on both sides of the lifting arm 3, without generating additional loads, and thus is beneficial to improving the movement stability of the upper lifting frame 303 in the vertical direction.

[0061] More specifically, the movable end of the first hydraulic cylinder 301 is fixedly connected to the upper lifting frame 303 through an intermediate support 302, and the intermediate support 302 is used to limit the sliding distance of the upper lifting frame 303 relative to the fixed frame 2. Correspondingly, the radial dimension of the cross-section of the intermediate support 302 is larger than the radial dimension of the rectangular frame in the fixed frame 2. When the lower end surface of the intermediate support 302 contacts the upper end surface in the fixed frame 2, the downward movement of the intermediate support 302 is restricted.

[0062] As an extended solution, the connection method between the intermediate support 302 and the upper lifting frame 303 is as follows. The interior of the intermediate support 302 is provided with a rectangular receiving groove penetrating in the vertical direction. The outer side wall of the upper lifting frame 303 is rectangular. The rectangular receiving groove in the intermediate support 302 is sleeved outside the upper lifting frame 303. Corresponding pin holes are opened in both the intermediate support 302 and the upper lifting frame 303, and the two are fixedly connected by a pin shaft, thereby increasing the connection stability between the two.

[0063] Reference Figure 5 As shown, preferably, the fixed frame 2 includes an upper sliding frame 203 and a lower sliding frame 204 that are spaced apart in the vertical direction. Both the upper sliding frame 203 and the lower sliding frame 204 surround and form a rectangular receiving groove, and the two are fixedly connected correspondingly by two connecting vertical plates 202 arranged in parallel and opposite to each other. The upper sliding frame 203, the lower sliding frame 204, and the connecting vertical plates 202 together enclose a rectangular second receiving groove 208. The upper lifting frame 303 and the lower lifting frame 304 are respectively slidably installed inside the upper sliding frame 203 and the lower sliding frame 204.

[0064] Among them, reference Figure 5As shown, the front and rear sides of the upper sliding frame 203 and the lower sliding frame 204 are fixedly connected correspondingly through the vertically arranged connecting vertical plates 202. By providing the connecting vertical plates 202 on both sides, not only can the connection stability between the upper sliding frame 203 and the lower sliding frame 204 be increased, but also the exposed area of the second accommodation groove 208 of the fixed frame 2 can be reduced, effectively reducing the entry of foreign objects; in addition, a channel is formed between the two side walls for the horizontal sliding frame 306 to penetrate and slide in the vertical direction.

[0065] Reference Figure 6 As shown, as a further preferred method, self-lubricating first sliding plates 205 are provided around the inner side walls of the rectangular accommodation grooves in the upper sliding frame 203 and the lower sliding frame 204, and first sliding strips 305 corresponding to the first sliding plates 205 are provided on the outer side walls of the upper lifting frame 303 and the lower lifting frame 304.

[0066] When the telescopic arm 4 drives the steel coil to lift, the force in the sliding direction of the telescopic arm 4 between the inner side walls of the upper lifting frame 303 and the lower lifting frame 304 and the outer side walls of the upper sliding frame 203 and the lower sliding frame 204 is relatively large. Preferably, on the opposite side walls in this direction, the number of the first sliding plates 205 is greater than that on the other opposite side walls. Among them, the first sliding plates 205 provided on the remaining opposite inner side walls are beneficial to increasing the contact area during the sliding process, reducing the stress concentration, and improving the smoothness of the relative sliding.

[0067] Among them, the sliding mode of the first sliding strip 305 with the first sliding plate 205 using the self-lubricating sliding plate, on the one hand, compared with the structure of the guide wheel sliding, can increase the sliding contact area, thereby helping to reduce the pressure per unit area and reducing wear. On the other hand, compared with the traditional way of matching the linear guide rail and the slider, it has a smaller thickness, does not require lubricant, reduces the pollution of lubricating oil or grease, and reduces the investment cost.

[0068] As an expansion solution, the surface of the first sliding strip 305 is provided with grooves. Reference Figure 7 As shown, during use, the side wall surface where the groove is located in the first sliding strip 305 contacts the first sliding plate 205, and this groove is used to accommodate the self-lubricating powder, improving the lubrication effect and further reducing the pollution to the environment.

[0069] For the convenience of manufacturing and installation, the outer wall of the upper lifting frame 303 and the inner wall of the upper sliding frame 203, and the side wall of the lower lifting frame 304 and the inner wall of the lower sliding frame 204 are correspondingly matched, which helps to improve the relative sliding stability between the upper lifting frame 303 and the upper sliding frame 203 and between the lower lifting frame 304 and the lower sliding frame 204.

[0070] In addition, reference Figure 5As shown in the figure, in order to further reduce the entry of foreign objects from the bottom of the lower lifting frame 304, a first protective frame 206 is also provided at the bottom of the lower sliding frame 204 to further extend the inner cavity of the second receiving groove 208. Specifically, the top end of the first protective frame 206 is fixedly connected to the bottom end of the lower sliding frame 204, or fixedly installed in the first receiving groove 1021 of the base 102. The inside of the first protective frame 206 communicates with the second receiving groove 208. During the process of the lower lifting frame 304 sliding relative to the lower sliding frame 204 in the vertical direction, the lower lifting frame 304 descends into the inside of the first protective frame 206, and at the same time, it can also prevent accidental contact with other equipment or people.

[0071] To improve the stability of the fixed frame 2, reinforcing rib plates 207 fixedly connected thereto are also provided around the outside of the fixed frame 2. The reinforcing rib plates 207 are preferably arranged at one end of the fixed frame 2 away from the steel coil to be lifted, and reinforcing rib plates are also appropriately provided on the other outer side walls to further improve the stability of the rectangular frame in the fixed frame 2.

[0072] In some other embodiments, refer to Figure 4 、 Figure 8 As shown in the figure, the telescopic arm 4 includes a telescopic frame 401, and the telescopic frame 401 is slidably arranged inside the horizontal sliding frame 306; the horizontal sliding frame 306 surrounds to form a rectangular third receiving groove 3061, and second sliding strips 307 are provided on the inner side walls around the horizontal sliding frame 306. A self-lubricating second sliding plate 403 corresponding to the telescopic frame 401 is provided on the outer side wall of the telescopic frame 401.

[0073] Among them, the force in the vertical direction between the horizontal sliding frame 306 and the telescopic frame 401 is relatively large. Preferably, the second sliding strips 307 and the second sliding plates 403 that cooperate with each other are provided on the opposite side walls in this direction. Second sliding strips 307 are also provided on the other opposite inner side walls, which is beneficial to increasing the contact area during the sliding process, reducing the stress concentration, and is beneficial to improving the smoothness of the relative sliding. Further preferably, the number of second sliding plates 403 provided on the upper side wall of the telescopic frame 401 is greater than the number of second sliding plates 403 provided on its lower side wall.

[0074] For the convenience of manufacturing and installation, the inner wall of the horizontal sliding frame 306 matches the outer wall of the telescopic frame 401.

[0075] As a preferred embodiment of the horizontal movement module, the horizontal movement module further includes a second hydraulic cylinder 402. The fixed end of the cylinder body of the second hydraulic cylinder 402 is installed inside the horizontal sliding frame 306, and the second hydraulic cylinder 402 is used to drive the telescopic frame 401 to perform horizontal sliding. As can be seen from the above analysis, during the process of the second hydraulic cylinder 402 driving the telescopic arm 4 to slide relative to the horizontal sliding frame 306 in the horizontal direction, the telescopic arm 4 does not bear the load of the steel coil during both the forward and reverse strokes. Therefore, the driving force required by the second hydraulic cylinder 402 is relatively small.

[0076] Specifically, the second hydraulic cylinder 402 is horizontally arranged, and its movable end is fixedly connected to the telescopic frame 401. More specifically, the middle part of the cylinder body of the second hydraulic cylinder 402 is horizontally installed on the inner bottom wall of the horizontal sliding frame 306 through trunnions. The horizontal axis of the cylinder rod in the second hydraulic cylinder 402 coincides with the horizontal axis of the telescopic frame 401, ensuring that the telescopic frame 401 is symmetrically stressed within the horizontal sliding frame 306 without additional loads.

[0077] As an extended solution, a collision prevention mechanism 406 is provided at the end of the telescopic frame 401 for receiving the end of the steel coil, and a cushion block 405 is provided on the upper surface of this end. Among them, the material of the cushion block 405 is preferably polyurethane material.

[0078] As a further extended solution, as Figures 10-12 shown, the collision prevention mechanism 406 includes a front push plate 4061, a guide rod 4062, a mounting seat 4063 and a proximity switch 4064. One end of the mounting seat 4063 is fixed to the end of the telescopic frame 401; one end of the guide rod 4062 is installed in the chute of the mounting seat 4063 with a clearance, and the other end extends in the direction away from the telescopic frame 401 and is fixedly connected to the front push plate 4061; a spring (not shown in the figure) is sleeved outside the guide rod 4062 and is located between the front push plate 4061 and the mounting seat 4063; the proximity switch 4064 is fixedly installed in the mounting seat 4063, and its axis is perpendicular to the axis of the guide rod 4062, and a groove facing the proximity switch 4064 is provided in the guide rod 4062. When the telescopic arm 4 is not aligned with the center hole of the steel coil, when the front push plate 4061 in the collision prevention mechanism 406 may touch the steel coil, when the front push plate 4061 is subjected to a certain pressure, it will slide towards the mounting seat 4063, the guide rod 4062 will retract towards the mounting seat 4063 accordingly, the groove of the guide rod 4062 will approach the proximity switch 4064 and cause it to be triggered, the proximity switch 4064 sends a signal to make the driving telescopic frame 401 stop extending and retract, and at the same time issues an alarm, thus avoiding the situation that the telescopic frame 401 hard tops the steel coil and causes damage to the steel coil. The spring is used to push the front push plate 4061 back to its original position and at the same time drive the guide rod 4062 out of the sensing area of the proximity switch 4064.

[0079] Specifically, a second protective frame 308 is added to the end of the horizontal sliding frame 306 far from the telescopic frame 401. The second protective frame 308 is fixedly installed at the end of the horizontal sliding frame 306 to extend its inner cavity.

[0080] Refer to Figure 1 、 Figure 2 、 Figure 9As shown in the figure, considering that there is a walking beam track foundation at the lower part of the elevator and the space is limited, one end of the base 102 is offset and supported on the foundation 6. Specifically, this end of the base 102 is fixedly connected to the foundation 6 with anchor bolts, and the bottom of the column 101 is fixed to the foundation 6. This layout design can not only save space but also facilitate the installation of the walking beam.

[0081] As an extended solution, the vertical movement module further includes a connecting bottom plate 201. The connecting bottom plate 201 is sleeved outside the fixed frame 2, that is, the rectangular frame in the fixed frame 2 is located inside the connecting bottom plate 201. The fixed frame 2 is fixedly installed in the first receiving groove 1021 of the base 102 through the connecting bottom plate 201. Correspondingly, the four sides of the connecting bottom plate 201 are respectively fixedly installed around the upper end face of the first receiving groove 1021, thereby increasing the connection stability between the fixed frame 2 and the base 102.

[0082] As Figure 2 shown in the figure, further, a half saddle 5 is also provided on the base 102. Specifically, the half saddle 5 is arranged on one side of the upper end of the base 102. The half saddle 5 is used in cooperation with the fixed saddle 7. The half saddle 5 and the fixed saddle 7 are located on both sides of the walking beam. The walking beam transports the steel coil and places it on the half saddle 5 and the fixed saddle 7. The half saddle 5 and the fixed saddle 7 support the bottom of the steel coil.

[0083] This elevator is applicable to steel coils with a certain range of coil diameters, that is, steel coils with a center height within a certain range are lifted. Initial state: The telescopic arm 4 is not extended, that is, it retracts into the horizontal sliding frame 306, and the lifting arm 3 is at the lowest point.

[0084] For the steel coil with the smallest coil diameter, the process of lifting it is as follows:

[0085] S1, the walking beam transports the steel coil with the smallest coil diameter to the paired half saddle 5 and fixed saddle 7. When the walking beam descends and disengages from the steel coil, the telescopic arm 4 slides out horizontally within the horizontal sliding frame 306, and the telescopic arm 4 extends into the center of the steel coil;

[0086] S2, the lifting arm 3 ascends to lift the steel coil to the specified height. At this time, the bottom of the steel coil disengages from the paired half saddle 5 and fixed saddle 7;

[0087] S3, manually or by machine, the steel coil is packaged;

[0088] S4, after packaging, the lifting arm 3 descends to the initial position. At this time, the steel coil is placed back on the paired half saddle 5 and fixed saddle 7;

[0089] S5, the telescopic arm 4 retracts to the initial position, and the packaged steel coil can be continuously transported forward by the walking beam.

[0090] For the steel coil with a non-minimum coil diameter, the process of lifting it is as follows:

[0091] S1. When the walking beam transports the steel coil to the paired semi-saddle 5 and the fixed saddle 7 and the walking beam descends and disengages from the steel coil, the lifting arm 3 slides upward within the fixed frame 2, driving the telescopic arm 4 to lift together until the telescopic arm 4 aligns with the center of the steel coil, and then the lifting arm 3 stops;

[0092] S2. Subsequently, the telescopic arm 4 starts to extend horizontally and the telescopic arm 4 extends into the center of the steel coil;

[0093] S3. Then the lifting arm 3 continues to start lifting, driving the telescopic arm 4 and the steel coil to lift together. When the steel coil is lifted to the specified height, the lifting arm 3 stops;

[0094] S4. Manual or machine starts to pack;

[0095] S5. After packing is completed, the lifting arm 3 descends, driving the telescopic arm 4 and the steel coil to descend together until the telescopic arm 4 is located at the center of the steel coil, and then the lifting arm 3 stops. At this time, the steel coil has been placed back on the paired semi-saddle 5 and the fixed saddle 7;

[0096] S6. Then the telescopic arm 4 retracts, and the packaged steel coil can continue to be transported forward by the walking beam.

[0097] When the hoist continuously lifts steel coils of the same coil diameter, the initial position of the telescopic arm 4 is the position after executing S6. That is, after the lifting arm 3 completes the lifting of a single steel coil, the lifting arm 3 does not return to the lowest position, and the lifting process starts from step S2. When the coil diameter of the steel coil changes, the lifting arm 3 returns to the initial state and the lifting starts from step S1.

[0098] The above has schematically described the present invention and its embodiments. This description is not restrictive, and what is shown in the drawings is only one of the embodiments of the present invention. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and without departing from the gist of the present invention, without creative design, they create structural forms and embodiments similar to this technical solution, which shall fall within the protection scope of the present invention.

Claims

1. A hoist for steel coils, characterized in that, Comprising: A support frame (1), the support frame (1) includes columns (101) and a base (102), the base (102) is a frame structure, which is horizontally offset and supported on the top of the columns (101), and a first accommodation groove (1021) penetrating in the vertical direction is formed in the middle of the base (102) frame; and a first accommodation groove (1021) penetrating in the vertical direction is formed in the middle of the base (102) frame; A vertical movement module, the vertical movement module includes a fixed frame (2) and a lifting arm (3), the fixed frame (2) is fixedly installed inside the first accommodation groove (1021) in the vertical direction, and a second accommodation groove (208) is formed around the fixed frame (2), and the lifting arm (3) is slidably installed up and down inside the second accommodation groove (208); And a horizontal movement module, the horizontal movement module includes a telescopic arm (4) and a horizontal sliding frame (306), the horizontal sliding frame (306) passes through the second accommodation groove (208) in the horizontal direction and is fixedly connected to the lifting arm (3), and the telescopic arm (4) is slidably installed inside the horizontal sliding frame (306) in the horizontal direction.

2. The hoist for steel coils according to claim 1, characterized in that, The lifting arm (3) includes an upper lifting frame (303) and a lower lifting frame (304) located below it, the horizontal sliding frame (306) is fixedly installed between the upper lifting frame (303) and the lower lifting frame (304), and the three are arranged in a cross shape.

3. The hoist for steel coils according to claim 2, characterized in that, Both ends of the horizontal sliding frame (306) are asymmetrically distributed relative to the lifting arm (3), and the distance between the end of the horizontal sliding frame (306) close to the steel coil to be lifted and the lifting arm (3) is less than the distance between the other end and the lifting arm (3); And / or the vertical movement module further includes a first hydraulic cylinder (301), and the first hydraulic cylinder (301) is used to drive the lifting arm (3) to perform lifting movement.

4. The hoist for steel coils according to claim 3, characterized in that, The fixed frame (2) includes an upper sliding frame (203) and a lower sliding frame (204) spaced apart in the vertical direction, both the upper sliding frame (203) and the lower sliding frame (204) form rectangular accommodation grooves, and the two are fixedly connected correspondingly by two connecting vertical plates (202) arranged parallel and opposite to each other; the upper lifting frame (303) and the lower lifting frame (304) are respectively slidably installed inside the upper sliding frame (203) and the lower sliding frame (204).

5. The hoist for steel coils according to claim 4, characterized in that, Self-lubricating first sliding plates (205) are provided around the inner side walls of the rectangular accommodation grooves in the upper sliding frame (203) and the lower sliding frame (204), and first sliding strips (305) corresponding to the first sliding plates (205) are provided on the outer side walls of the upper lifting frame (303) and the lower lifting frame (304).

6. The hoist for steel coils according to claim 5, characterized in that, Grooves are provided on the outer surface of the first sliding strip (305), and the side wall surface of the first sliding strip (305) where the groove is located is in contact with the first sliding plate (205); And / or the outer wall of the upper lifting frame (303) and the inner wall of the upper sliding frame (203), and the outer side wall of the lower lifting frame (304) and the inner side wall of the lower sliding frame (204) are correspondingly matched; And / or a first protective frame (206) is further provided at the bottom of the lower sliding frame (204).

7. The hoist for steel coils according to any one of claims 1-6, characterized in that, The telescopic arm (4) includes a telescopic frame (401), and the telescopic frame (401) is slidably arranged inside the horizontal sliding frame (306); the horizontal sliding frame (306) surrounds and forms a rectangular third accommodation groove (3061), and second sliding strips (307) are provided on the inner side walls around the third accommodation groove (3061), and self-lubricating second sliding plates (403) corresponding to the second sliding strips (307) are provided on the two outer side walls of the telescopic frame (401).

8. The hoist for steel coils according to claim 7, characterized in that, The inner wall of the horizontal sliding frame (306) matches the outer wall of the telescopic frame (401); and / or the horizontal moving module further includes a second hydraulic cylinder (402), the cylinder body of the second hydraulic cylinder (402) is installed inside the horizontal sliding frame (306), and the second hydraulic cylinder (402) is used to drive the telescopic frame (401) to slide horizontally; and / or an anti-collision mechanism (406) is provided at the end of the telescopic frame (401) for receiving the end of the steel coil, and a cushion block (405) is provided on the upper surface of this end; and / or a second protective frame (308) is provided at one end of the horizontal sliding frame (306) away from the telescopic frame (401).

9. The hoist for steel coils according to any one of claims 1-6, characterized in that, The other end of the base (102) away from the column (101) is offset and supported on the foundation (6).

10. The hoist for steel coils according to any one of claims 1-6, characterized in that, The vertical moving module further includes a connecting bottom plate (201), the connecting bottom plate (201) is sleeved outside the fixed frame (2), and the fixed frame (2) is fixedly installed in the first accommodation groove (1021) through the connecting bottom plate (201).

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