Cantilever type straightening machine roll collar replacing device

Abstract

The utility model relates to a cantilever type straightening machine roll collar replacing device which comprises a frame and a telescopic device used for pushing the frame to horizontally move towards a straightening machine frame, and a plurality of clamping devices used for clamping roll collars are arranged on the frame. The telescopic device comprises a guide structure connected with the frame and a power structure used for driving the frame to horizontally move along the guide structure. The guide structure comprises two groups of guide columns which are respectively connected with the left end and the right end of the frame; the guide column is sleeved with a guide sleeve in a sliding mode and installed on a straightening machine frame through the guide sleeve. And the guide columns are directly or indirectly connected with the frame. The hydraulic cylinder is adopted as a power structure, and compared with a traditional spiral elevator, the spiral elevator is simpler in structure and more convenient to install and maintain. Complex mechanical transmission parts are reduced, meanwhile, the hydraulic system is high in adaptability to the environment and can stably operate under the complex working condition environments such as high temperature, high humidity and dust, and the failure rate of the device is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of section steel straightening equipment, and relates to a roll ring replacement device for a cantilever type straightening machine. Background Art

[0002] At present, when replacing roll rings of medium and small-sized cantilever type section steel straightening machines in use at home and abroad, most of them adopt the form of replacing single roll ring groups. That is, first loosen the locking devices at the ends of each working roll shaft, and then use a crane or a cantilever crane to remove each roll ring group one by one and place them in the roll ring area. When installing the roll rings, the order is reversed. The problems brought by replacing roll rings in this way are that the labor intensity of the operator is high, the roll changing time is long, and a large amount of production time is occupied.

[0003] A small part adopts centralized roll changing with a screw lift as the driving method. For example, Chinese Patent with the publication number CN106425405B discloses a quick roll ring replacement device for a cantilever type straightening machine. It includes a frame, and a plurality of clamping devices for clamping roll rings are arranged on the frame; it also includes a telescopic device for pushing the frame to horizontally move towards the straightening machine frame; the telescopic device includes a guiding structure connected to the frame and a power structure for driving the frame to horizontally move along the guiding structure; the clamping device includes clamping holes arranged on the frame and a plurality of clamping plates arranged around the clamping holes, and a driving structure for driving the clamping plates to move in and out to clamp and loosen the roll rings is also arranged on the frame. It uses a screw lift as the power structure for driving the frame to move, the installation structure is complex, it is not convenient for maintenance and installation, and its transmission components have high requirements for the environment. Facing the working conditions of the steel straightening machine, faults occur frequently. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to solve the problem that the existing quick roll ring replacement device is difficult to meet the complex working conditions, and provide a roll ring replacement device for a cantilever type straightening machine.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A roll ring replacement device for a cantilever type straightening machine includes a frame and a telescopic device for pushing the frame to horizontally move towards the straightening machine frame. A plurality of clamping devices for clamping roll rings are arranged on the frame. The telescopic device includes a guiding structure connected to the frame and a power structure for driving the frame to horizontally move along the guiding structure;

[0007] The guiding structure includes two groups of guiding columns, and the two groups of guiding columns are respectively connected to the left and right ends of the frame; guiding sleeves are slidably sleeved on the guiding columns and are installed on the straightening machine frame through the guiding sleeves; the guiding columns are directly or indirectly connected to the frame;

[0008] The power structure includes two hydraulic cylinders corresponding to the two groups of guide columns. Each hydraulic cylinder is arranged parallel to the corresponding guide column. One end of the hydraulic cylinder is connected to the corresponding guide column through a connecting plate, and the other end is connected to the straightening machine frame.

[0009] Furthermore, the clamping device includes clamping holes provided on the frame and a plurality of clamping plates arranged around the clamping holes. A driving structure for driving the clamping plates to move in and out to clamp and loosen the roll rings is also provided on the frame. The driving structure includes two link mechanisms symmetrically arranged left and right. The link mechanism includes an upper shaft and a lower shaft symmetrically arranged up and down. An upper connecting rod is connected to the upper shaft, and a lower connecting rod is connected to the lower shaft. An intermediate rod is further provided between the upper connecting rod and the lower connecting rod. An upper clamping plate for clamping the roll ring is also fixed on the upper shaft, and a lower clamping plate for clamping the roll ring is provided on the lower shaft.

[0010] Furthermore, the clamping device further includes a rotating handle and a fixing pin for fixing the rotating handle. The rotating handle is arranged on the upper shaft or the lower shaft.

[0011] Furthermore, the telescopic device is connected to the frame through a lifting lug. The frame includes an upper frame and a lower frame. Lifting screws are provided on both the upper frame and the lower frame.

[0012] Furthermore, each group of guide columns includes two guide columns arranged parallel to each other up and down. The front ends of each group of guide columns are connected to the same connecting plate, and the rear ends are connected to the same hanging plate. The hanging plate is connected to the frame. Clamping holes for clamping the lifting lugs of the upper frame and the lower frame are provided on the hanging plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model uses a hydraulic cylinder as the power structure. Compared with the traditional screw lift, the structure is simpler, and installation and maintenance are more convenient. Complex mechanical transmission components are reduced. At the same time, the hydraulic system has strong adaptability to the environment and can operate stably under complex working conditions such as high temperature, high humidity, and dust, reducing the failure rate of the device.

[0015] 2. The present utility model drives the frame to move horizontally through a hydraulic cylinder, enabling rapid and accurate roll ring replacement. The clamping devices for multiple roll rings can be operated simultaneously, significantly reducing the roll changing time and improving production efficiency.

[0016] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. Brief Description of the Drawings

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail and preferably below in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 It is a schematic structural diagram of a roll ring replacement device for a cantilever type straightening machine in the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the upper and lower frames in the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the telescopic device in the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the connecting rod mechanism in the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the clamping device in the present utility model.

[0023] Figure 6 It is a schematic structural diagram of the hanging plate in the present utility model.

[0024] Figure 7 It is a schematic diagram of the positional relationship between the roll ring replacement device for a cantilever type straightening machine and the straightening machine in the present utility model.

[0025] Reference Numerals: 1 - Frame; 10 - Connecting Rod Mechanism; 101 - Upper Clamping Plate; 102 - Upper Connecting Rod; 103 - Upper Side Shaft; 104 - Intermediate Rod; 105 - Rotating Handle; 106 - Fixed Pin; 107 - Lower Side Shaft; 108 - Lower Connecting Rod; 109 - Lower Clamping Plate; 11 - Upper Frame; 12 - Lower Frame; 13 - Lifting Screw; 14 - Lifting Lug; 15 - Pin Hole; 16 - Positioning Pin; 2 - Guide Structure; 21 - Connecting Plate; 22 - Guide Post; 23 - Hanging Plate; 231 - Clamping Hole; 3 - Power Structure; 31 - Hydraulic Cylinder; 4 - Second Position; 5 - First Position; 6 - Straightening Machine Frame. Detailed Embodiments

[0026] The following specific examples illustrate the embodiments of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model schematically. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0027] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than actual object diagrams, and should not be construed as limitations on the present utility model; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0028] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as limitations on the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Please refer to Figures 1 to 7 , which is a roll ring replacement device for a cantilever straightening machine, including a frame 1. The frame 1 includes an upper frame 11 and a lower frame 12. The upper frame 11 and the lower frame 12 are similar in structure and are both U-shaped, which facilitates connecting the two ends to the guiding structure 2 and then making it convenient for the middle part to approach the straightening machine frame 6, and the two ends are also used for connection and lifting.

[0030] In this embodiment, a plurality of clamping devices are provided on the upper frame 11. The number and mutual positional relationship of the clamping devices correspond to the roll rings on the upper layer of the straightening machine. Similarly, the clamping devices on the lower frame 12 correspond to the roll rings on the lower layer of the straightening machine. Lifting screws 13 are provided at the left and right ends of the upper frame 11 and the lower frame 12. Pin holes 15 are provided on the lower sides of the left and right ends of the upper frame 11, and positioning pins 16 are provided on the upper sides of the left and right ends of the lower frame 12. In this way, when the upper frame 11 is placed on the lower frame 12, the positioning pins 16 and the pin holes 15 play a role in connecting and positioning. Lifting lugs 14 are also provided at the left and right ends of the upper frame 11 and the lower frame 12. The lifting lug 14 is a stepped cylinder and is used to be clamped with the telescopic device so that the telescopic device can push the frame 1 to move horizontally.

[0031] The telescopic device includes a guiding structure 2 connected to the frame 1 and a power structure 3 for driving the frame 1 to move horizontally along the guiding structure 2.

[0032] The guiding structure 2 includes two groups of left and right guiding columns 22. Each group of guiding columns 22 includes two parallel guiding columns 22 arranged vertically. The front ends of each group of guiding columns 22 are fixedly connected to the same connecting plate 21, and the rear ends are fixedly connected to the same hanging plate 23. The hanging plate 23 is provided with a clamping hole 231 for clamping with the lifting lug 14. The left guiding column 22 is clamped with the lifting lug 14 at the left end of the frame 1 through the left hanging plate 23, and the right guiding column 22 is clamped with the lifting lug 14 at the right end of the frame 1 through the right hanging plate 23. In this way, the frame 1 and the guiding structure 2 form a concave structure, and the straightening machine is located in the inner space of the concave structure. A guiding sleeve is sleeved on the guiding column 22, and the guiding sleeve is fixed on the straightening machine frame 6. In this way, as long as the guiding column 22 is driven to move horizontally along the guiding sleeve, the frame 1 can approach or move away from the straightening machine along the direction of the guiding column 22. Moreover, the frame 1 is clamped with the hanging plate 23 through the lifting lug 14 and thus connected to the guiding structure 2. Then, as long as the frame 1 is lifted, the frame 1 can be conveniently connected to or disengaged from the guiding structure 2.

[0033] The power structure 3 includes two hydraulic cylinders 31 corresponding to the two groups of guiding columns 22. Each hydraulic cylinder 31 is arranged parallel to the corresponding guiding column 22, and the piston rod of the hydraulic cylinder 31 is connected to the corresponding connecting plate 21. With such an arrangement, the hydraulic cylinder 31 pushes the connecting plate 21 to move, and the connecting plate 21 drives the guiding column 22 to move. In this embodiment, the hydraulic cylinder 31 is fixed to the straightening machine frame 6 by bolts, and the hydraulic cylinder 31 is arranged parallel in the middle of the two guiding columns 22.

[0034] Among them, the clamping device includes a clamping hole provided on the frame 1 and a plurality of clamping plates arranged around the clamping hole. The frame 1 is also provided with a driving structure for driving the clamping plates to move in and out to clamp and release the roll ring. The driving structure includes two link mechanisms 10 arranged symmetrically left and right. The link mechanism 10 includes an upper shaft 103 and a lower shaft 107 arranged symmetrically up and down. Both the upper shaft 103 and the lower shaft 107 are installed on the frame 1 through bearings. The part of the upper shaft 103 located inside the frame 1 is fixedly connected with an upper connecting rod 102, and the part of the lower shaft 107 located inside the frame 1 is fixedly connected with a lower connecting rod 108. An intermediate rod 104 is also hinged between the upper connecting rod 102 and the lower connecting rod 108. The front end of the upper shaft 103 extends out of the frame 1 and is fixed with an upper clamping plate 101 for clamping the roll ring, and the front end of the lower shaft 107 extends out of the frame 1 and is fixed with a lower clamping plate 109 for clamping the roll ring.

[0035] The clamping device further includes a rotary handle 105 and a fixing pin 106 for fixing the rotary handle 105. The rotary handle 105 is fixed to the rear end of the upper shaft 103 or the lower shaft 107 extending out of the frame 1. In this embodiment, the rotary handle 105 is fixed to the rear end of the lower shaft 107. With this arrangement, by pulling the rotary handle 105, the upper clamping plate 101 and the lower clamping plate 109 can move synchronously to clamp the roller ring. Through the fixing pin 106, the rotary handle 105 can be positioned to maintain the clamped or loosened state.

[0036] When replacing the roller ring, it includes removing the old roller and installing the new roller. Since the frame 1 includes an upper frame 11 and a lower frame 12, all the roller rings can be replaced, or only some of them can be replaced. When replacing some of the roller rings, only the corresponding upper frame 11 or lower frame 12 is needed. Taking the replacement of all the roller rings as an example.

[0037] Steps for removing the old roller:

[0038] Place the upper frame 11 and the lower frame 12 in the roller ring area.

[0039] Pull the rotary handle 105 to make the clamping devices on the upper frame 11 and the lower frame 12 in the loosened state. Use a crane to lift the upper frame 11 and move it above the lower frame 12, and place the upper frame 11 on the lower frame 12 through the positioning pin 16 and the pin hole 15.

[0040] Loosen the locking devices at the ends of each working roller.

[0041] Start the hydraulic cylinder 31, and the piston rod retracts, making the hanging plate 23 move away from the straightening machine by an appropriate distance, which is convenient for hanging the frame 1 on the hanging plate 23. Take this position as the second position 4.

[0042] Use a crane to hook the lifting screw 13 on the lower frame 12, lift the upper frame 11 and the lower frame 12 simultaneously, move them to the second position 4, place the lifting lugs 14 on the upper frame 11 and the lower frame 12 into the clamping holes 231 of the hanging plate 23, and remove the hook of the crane. At this time, the upper frame 11 and the lower frame 12 are already hung on the hanging plate 23.

[0043] Start the hydraulic cylinder 31 again to make the hanging plate 23 move towards the straightening machine until the clamping device of the frame 1 can clamp the roller ring. Take this position as the first position 5.

[0044] Pull the rotary handle 105 to make the clamping devices on the upper frame 11 and the lower frame 12 clamp the roller ring.

[0045] Start the hydraulic cylinder 31 to move the hanging plate 23 to the second position 4. At this time, the roll ring has been completely separated from the work roll. Use a crane to hook the lifting screw 13 on the lower frame 12, and lift the upper frame 11 and the lower frame 12 carrying the roll ring at the same time, move them to the roll ring area, and then lift the upper frame 11 and place it in the roll ring area.

[0046] Pull the handle to make the clamping devices on the upper frame 11 and the lower frame 12 in the released state. Use a crane or a jib crane to lift the roll rings one by one and place them in the roll ring area.

[0047] Steps for installing a new roll:

[0048] Place the upper frame 11 and the lower frame 12 in the roll ring area.

[0049] Pull the rotating handle 105 to make the clamping devices on the upper frame 11 and the lower frame 12 in the released state.

[0050] Use a crane or a jib crane to place the roll rings one by one at the clamping devices, so that the center line of the roll ring is basically coincident with the center line of the clamping hole. Pull the rotating handle 105 to clamp the roll ring.

[0051] Lift the upper frame 11 and move it above the lower frame 12. Place the upper frame 11 on the lower frame 12 through the positioning pin 16 and the pin hole 15.

[0052] Start the hydraulic cylinder 31 to move the hanging plate 23 horizontally to the second position 4.

[0053] Lift the upper frame 11 and the lower frame 12 at the same time and move them above the hanging plate 23. Place the lifting lugs 14 on the upper frame 11 and the lower frame 12 in the clamping holes 231 of the hanging plate 23. At this time, the upper frame 11 and the lower frame 12 have been hung on the hanging plate 23;

[0054] Start the hydraulic cylinder 31 again to move the hanging plate 23 horizontally to the first position 5. At this time, the roll ring has been inserted into the work roll.

[0055] Pull the rotating handle 105 to make the clamping devices on the upper frame 11 and the lower frame 12 in the released state.

[0056] Lift the upper frame 11 and the lower frame 12 without roll rings and place them in the roll ring area.

[0057] Lock the end of the work roll.

[0058] As can be seen from the above steps of removing the old roller and installing the new roller, the steps that need to be completed online only include clamping the frame 1 on the hanging plate 23, and the hanging plate 23 moves to install or remove the roller ring set. The remaining steps, including removing the roller ring from the frame 1 or installing the roller ring on the frame 1, etc., are all completed offline, which greatly reduces the parking replacement time, thus achieving replacement within thirty minutes. Secondly, the work of installing or disassembling the roller ring online can be automatically completed by this device, and the worker only needs to pull the rotating handle 105, thereby reducing the labor intensity.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A cantilever type straightening machine roller ring replacement device, comprising a frame and a telescopic device for pushing the frame to move horizontally toward a straightening machine frame, wherein the frame is provided with a plurality of clamping devices for clamping the roller ring, and characterized in that: The telescopic device includes a guide structure connected to the frame and a power structure for driving the frame to move horizontally along the guide structure; The guide structure comprises two groups of guide posts, which are respectively connected to the left and right ends of the frame; the guide posts are slidably sleeved with guide sleeves, and are installed on the straightening machine frame through the guide sleeves; the guide posts are directly or indirectly connected to the frame; The power structure includes two hydraulic cylinders corresponding to the two groups of guide columns. Each hydraulic cylinder is arranged in parallel with the corresponding guide column, and one end of the hydraulic cylinder is connected to the corresponding guide column through a connecting plate, and the other end is connected to the straightening machine frame.

2. The cantilever straightening machine roller ring replacement device according to claim 1 is characterized in that: The clamping device includes a clamping hole set on the frame and a plurality of clamping plates arranged around the clamping hole. The frame is also provided with a driving structure for driving the clamping plate to move inward and outward to clamp and release the roller ring. The driving structure includes two connecting rod mechanisms symmetrically arranged on the left and right. The connecting rod mechanism includes an upper shaft and a lower shaft symmetrically arranged in upper and lower directions. The upper shaft is connected with an upper connecting rod, and the lower shaft is connected with a lower connecting rod. An intermediate rod is also provided between the upper connecting rod and the lower connecting rod. The upper shaft is also fixed with an upper clamping plate for clamping the roller ring, and the lower shaft is provided with a lower clamping plate for clamping the roller ring.

3. The cantilever straightening machine roller ring replacement device according to claim 2 is characterized in that: The clamping device also includes a rotating handle and a fixing pin for fixing the rotating handle, and the rotating handle is arranged on the upper shaft or the lower shaft.

4. The cantilever straightening machine roller ring replacement device according to claim 1 is characterized in that: The telescopic device is connected to the frame through lifting ears. The frame includes an upper frame and a lower frame. Lifting screws are provided on the upper frame and the lower frame.

5. The cantilever straightening machine roller ring replacement device according to claim 4 is characterized in that: Each group of guide columns includes two upper and lower parallel guide columns. The front end of each group of guide columns is connected to the same connecting plate, and the rear end is connected to the same hanging plate. The hanging plate is connected to the frame, and the hanging plate is provided with a clamping hole for clamping the upper frame and the lower frame ears.

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