Movable supporting device for balance weight of seamless steel tube cold-rolling mill

Abstract

The utility model discloses a movable supporting device for a seamless steel tube cold-rolling mill counter weight. The movable supporting device comprises a vehicle body, wheel shafts and idler wheels. The trolley body is of a symmetrical frame structure and comprises a support, side vertical plates and lug plates. The two side vertical plates are vertically and symmetrically arranged at the two ends of the support in the length direction. The top surface of the side vertical plate is a supporting position; the two lug plates are vertically and symmetrically arranged on the upper surfaces of the two side edges of the support in the length direction. The two end parts of the axle respectively penetrate through the lower parts of the corresponding side vertical plates and are positioned outside the vehicle body; and the roller is connected to the end part of the wheel shaft. On the basis that operation safety is guaranteed, operation efficiency is improved, labor intensity is further relieved, and the requirement for orderly operation of cold rolling of seamless steel pipes is met.

Description

Technical Field

[0001] The utility model relates to auxiliary tooling for cold rolling equipment for producing seamless steel pipes in metallurgy and machinery industries, and more specifically to a mobile supporting device for a balancing weight of a seamless steel pipe cold rolling mill. Background Art

[0002] Seamless steel pipe is a common metallurgical product.

[0003] Seamless steel pipe cold rolling technology has become the main method of production, preparation and processing of seamless steel pipes due to its high rolling precision, fast speed, large production capacity, high yield rate, and easy production organization and process technology adjustment.

[0004] Cold rolling equipment for seamless steel pipes is divided into two-roller type and multi-roller type according to the number of rolls. Among them, the two-roller periodic cold rolling mill is the most widely used cold rolling mill for seamless steel pipes due to its compact structure, large rolling force, high production capacity, etc. Usually, the two-roller cold rolling mill is composed of a main transmission mechanism, a feed rotary mechanism, a rolling mechanism, a rotary chuck mechanism, a bed mechanism, a feeding (unloading) mechanism, a lubrication mechanism, a hydraulic mechanism, an electrical control system, etc.

[0005] At present, the main transmission mechanism of the two-roller cycle cold rolling mill mainly includes two types: the weight balance type and the double-sector balance (crank-connecting rod) type. The balanced weight transmission mechanism is mainly composed of a vertical balance weight, a crankshaft device, a horizontal connecting rod and a vertical connecting rod, a machine base, a bearing, a slideway, a slider, etc. Its characteristic is that the vertically placed weight device is used to store the energy released when the frame is decelerated, and the stored energy is released when the frame is accelerated, and then the inertia force of the frame and the weight is balanced by the fan-shaped block on the crankshaft. The weight balance effect is significant, and it can obtain a large potential energy to meet the deformation processing of large-sized and thick-walled seamless steel pipes. However, in order to provide an effective distance for the reciprocating motion of the weight, the weight needs to be placed in a deeper underground space (such as a pit, etc.), which occupies a large space, and the application scope is subject to certain restrictions. In addition, the requirements for the installation and daily inspection and maintenance of the weight are high, so it is often used for rolling seamless steel pipes with large rolling specifications, large wall thickness, large deformation, and large alloy element content.

[0006] As for the vertical balance weight structure, it is composed of a stepped cylindrical wheel axle (core shaft) and a center-hole cylindrical weight, which are assembled into an independent whole by the temperature difference method. When in use, the sliding bearings are installed at both ends of the wheel axle and then installed in the rectangular slider, and the slider is installed in the vertical slide; at the same time, rolling bearings are installed on the inner journals of the sliding bearings at both ends of the wheel axle, and a vertical connecting rod is installed outside the rolling bearing, and the crankshaft above the weight is connected by the vertical connecting rod. Considering the functional requirements of the slides and bearing lubrication on both sides of the weight, an independent closed space is generally used, that is, the weight room building structure, which plays a role in preventing people from entering at will and preventing the lubricating oil from spilling.

[0007] When cold rolling seamless steel pipes, the crankshaft device installed on the machine base rotates 360 degrees under the power output of the main motor. At this time, the vertical connecting rod installed on the crankshaft device reciprocates vertically up and down with the rotation of the crankshaft, and drives the balance weight at the bottom of the vertical connecting rod to make synchronous vertical up and down motion in the rectangular space formed by the slideway, which plays a role in balancing the eccentric potential energy of the crankshaft.

[0008] Due to the structural characteristics and functional requirements of the vertical balance weight, the motion accuracy is strictly required. Once the motion clearance between the slider and the slideway is worn, and the sliding or rolling bearings are worn, the motion accuracy and stability of the vertical connecting rods on both sides will be abnormal, which will not only affect the motion accuracy of the entire main transmission mechanism (crankshaft transmission mechanism), but also cause abnormalities in the cold rolled pipe, affecting the rolling quality and efficiency. Therefore, it is necessary to regularly perform precision inspections on various parts of the vertical balance weight and replace abnormal parts.

[0009] At present, when dismantling the vertical balancing weight, relevant workers are concentrated in the weight room in the underground space (such as a pit, etc.), and the specific process includes: adjusting the work position (the vertical balancing weight is at the lowest position of the slide) → setting support measures (the two sides of the vertical balancing weight are firmly supported between the ground) → installing the lifting sling (the upper part of the hand chain hoist is installed on the crankshaft, and the lower ring chain is connected to the journal ends on both sides of the vertical balancing weight and pre-tightened) → removing the semicircular pressure cover at the lower end of the vertical connecting rod (the left and right connecting rods are dismantled at the same time to keep the hammer body balanced) → removing the support measures → releasing the vertical balancing weight (pulling the manual hoist by manpower to slowly lower the vertical balancing weight to the ground).

[0010] The process during installation is exactly the opposite, i.e.: adjust the connecting rod position (the vertical connecting rod is at the lowest position of the slide) → position the weight (the vertical balancing weight is placed directly below the vertical connecting rod, the rectangular sliders on both sides are aligned with the rectangular groove in the middle of the slide, and measures are taken to prevent rolling displacement) → install the sling (the upper part of the hand chain hoist is installed on the crankshaft, and the lower ring chain is connected to the journal ends on both sides of the vertical balancing weight and pre-tightened) → lift the vertical balancing weight (manpower pulls the manual hoist to lift the vertical balancing weight, so that the rolling bearing positions installed at both ends of the weight fit the split circular holes of the vertical connecting rod) → set up support measures (the two sides of the vertical balancing weight are firmly supported by the ground) → install the vertical connecting rod end cover (tighten the hydraulic bolts in place) → remove the support measures → remove the sling → clean up the work site, etc.

[0011] The above method can meet the disassembly and installation of the vertical balance weight of the main transmission mechanism of the two-roller periodic seamless steel tube cold rolling mill, but there are still some shortcomings, namely:

[0012] 1) There are potential safety hazards: The vertical balancing hammer is heavy. For example, the combined weight of the axle, hammer body, and slider of the LG-220H cold rolling mill exceeds 46 tons. It is not easy to firmly support a cylindrical structure of such weight. Once the support function is missing or lost during operation, the hammer will become unbalanced, posing an occupational health risk to the operators.

[0013] 2) High labor intensity: Due to the heavy weight of the vertical weight, all disassembly and installation rely on manual hoists, and the operators have high repetitive labor intensity. In addition, the working area is in the underground space under the equipment, and the environment is harsh, which is not conducive to long-term continuous operation.

[0014] 3) Inconvenient transportation of the hammer: After the vertical balance weight is disassembled, it needs to be transported from the weight room to the outside and lifted to the ground as a whole for repair or replacement; similarly, the repaired or replaced vertical balance weight also needs to be transported from the ground to the underground space for installation. Vertical lifting can be achieved by using a lifting machinery (crane), and horizontal displacement in the underground space can only be achieved by rolling the hammer or transporting it on a flat car. However, the rolling of the hammer will cause friction on the surface of the cylinder, and rolling is not convenient; it is also difficult to install and use it in the cramped space underground by transporting it on a flat car.

[0015] In summary, the disassembly and assembly of the vertical balancing weight is a routine item for the seamless steel pipe cold rolling mill equipment protection. The existing operation method is restricted by the environment, equipment, process and other aspects, and has certain shortcomings, which is not conducive to safe and efficient operation on site. Utility Model Content

[0016] In view of the defects existing in the prior art, the purpose of the utility model is to provide a mobile supporting device for the balancing weight of a seamless steel tube cold rolling mill, which improves the operating efficiency and further reduces the labor intensity on the basis of ensuring the safety of the operation, so as to meet the demand for orderly operation of the seamless steel tube cold rolling.

[0017] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0018] A mobile supporting device for a counterweight of a seamless steel pipe cold rolling mill, comprising a vehicle body, a wheel axle and a roller;

[0019] The vehicle body is a symmetrical frame structure, including a bracket, a side plate and a lug seat plate;

[0020] The side panels are provided with two pieces, which are vertically symmetrically arranged at the two ends of the length of the bracket;

[0021] The top surface of the side plate is a supporting position;

[0022] The ear seat plates are provided with two pieces, which are vertically symmetrically arranged on the upper surfaces of the two sides of the length of the bracket;

[0023] The two ends of the wheel axle respectively pass through the lower part of the corresponding side vertical plate and are located outside the vehicle body;

[0024] The roller is connected to the end position of the wheel shaft.

[0025] Preferably, the support comprises a frame bottom plate and a support column;

[0026] The frame bottom plate is a rectangular plate;

[0027] The support columns are provided with two pieces, both of which are rectangular plates, and are vertically symmetrically arranged on the upper surface of the length axis of the frame bottom plate.

[0028] Preferably, the waist position of the inner side surface of the side stand is connected to the end of the frame bottom plate;

[0029] The top surface of the side stand is an inwardly concave arc surface, and two semicircular rectangular grooves are opened at the bottom;

[0030] The two rectangular grooves are symmetrically arranged on both sides of the height axis of the side vertical plate.

[0031] Preferably, the ear seat plate is a right-angled triangle structure, and its right-angled short side and right-angled long side are respectively connected to the middle position of the support column and the frame bottom plate;

[0032] The intersection of the right-angled long side and the oblique side of the ear seat plate is arranged as a semicircular structure, and a circular through hole is opened on the semicircular structure.

[0033] Preferably, there are two wheel axles, both of which are concentric stepped cylindrical structures with different diameters, and the middle section is the large diameter section;

[0034] Both ends of the large diameter section are medium diameter sections;

[0035] The outer end of the middle diameter section is a small diameter section;

[0036] The middle diameter section is located in the rectangular groove.

[0037] Preferably, there are four rollers, which are respectively connected to the corresponding middle diameter section and small diameter section of the wheel axle, and include a wheel body, a wheel cover, an end cover and a rolling bearing;

[0038] The wheel body is sleeved on the middle diameter section of the wheel axle;

[0039] The rolling bearing is located in the wheel body and is sleeved on the small diameter section of the wheel axle;

[0040] The end cover is located in the wheel body and is arranged on the outer side of the rolling bearing, and is fixed to the end surface of the small diameter section of the wheel axle by screws;

[0041] The wheel cover is arranged on the outer side of the wheel body and connected with the wheel body through screws.

[0042] Preferably, the wheel cover is provided with a grease nipple.

[0043] The utility model provides a mobile supporting device for a counterweight of a seamless steel pipe cold rolling mill, which has the following beneficial effects:

[0044] 1) Reasonable design, simple structure, convenient processing and preparation, common materials, low implementation cost, convenient use, effectively ensuring the safety of daily inspection and maintenance of vertical balance weight;

[0045] 2) The overall symmetrical frame structure is easy for daily use and maintenance, eliminating the potential safety hazards during the disassembly and assembly of the counterweight from the source, achieving zero risk in the disassembly and assembly operation, and providing a stable carrier for the subsequent adjustment of the movement gap;

[0046] 3) The car body adopts a frame structure and is welded to form an effective support for the cylindrical surface of the counterweight during disassembly and installation operations. It has good support stability and good anti-slip and anti-rolling effects;

[0047] 4) Four sets of rollers are connected to the vehicle body through two axles under the vehicle body to form a complete motion structure, which is used to achieve horizontal displacement (transfer) of the balance weight through the track, saving labor, time and effort;

[0048] 5) The wheel body of the roller is a stepped concentric cylindrical structure with different diameters, which is convenient for the wheel body to fit the track and has its own axial positioning function to prevent deviation from the track during transportation;

[0049] 6) A grease nozzle is provided on the end face of the wheel cover of the roller to provide a grease injection pipeline for the rolling bearing to ensure the service life of the rolling bearing;

[0050] 7) The ear plates on both sides of the vehicle body create favorable conditions for providing power traction, facilitate effective displacement and transportation, further improve operating efficiency, and at the same time serve as reinforcing ribs on both sides of the vehicle body bracket.

[0051] 8) When disassembling and assembling the counterweight, it can not only play a vertical supporting function, but also achieve horizontal displacement. The arc-shaped side plates on both sides evenly load the load, which is convenient for lifting operations in closed spaces and is practical and efficient.

[0052] 9) It has strong versatility and has certain reference and application value for improving the safety technical measures and tooling for disassembly and assembly of vertical balance weights in underground spaces of two-roller periodic cold rolling mills and other similar cramped underground spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1It is a front view schematic diagram of the mobile support device of the utility model;

[0054] Figure 2 It is a top view schematic diagram of the mobile support device of the utility model;

[0055] Figure 3 It is a left side schematic diagram of the mobile support device of the utility model;

[0056] Figure 4 It is a schematic diagram of the main view of the vehicle body in the mobile support device of the utility model;

[0057] Figure 5 It is a top view schematic diagram of a vehicle body in the mobile support device of the utility model;

[0058] Figure 6 It is a left side schematic diagram of a vehicle body in the mobile support device of the utility model;

[0059] Figure 7 It is a schematic diagram of the structure of the wheel axle in the mobile supporting device of the utility model;

[0060] Figure 8 It is a schematic diagram of the structure of the wheel axle in the mobile supporting device of the utility model;

[0061] Fig. 9 It is a schematic diagram of the use state of the mobile supporting device of the utility model. DETAILED DESCRIPTION

[0062] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0063] Combination Figure 1 and Figure 2 As shown, the utility model provides a mobile supporting device for the balancing weight of a seamless steel pipe cold rolling mill, which adopts an integral structure, including a vehicle body 1, an axle 2 and a roller 3, which are arranged as a whole outside the weight room of an underground space, for supporting and transporting the vertical balancing weight during installation and disassembly operations.

[0064] Combination Figures 3 to 6 As shown, the vehicle body 1 is a symmetrical frame structure formed by welding, which effectively supports the cylindrical surface of the hammer body of the counterweight during disassembly and installation operations, has good supporting stability, and has good anti-slip and anti-rolling effects; it includes a bracket 11, a side plate 12 and an ear seat plate 13, all of which are made of Q235A.

[0065] The bracket 11 has one set, including a bracket bottom plate 111 and a bracket column 112, which are symmetrically welded.

[0066] The support bottom plate 111 has one piece, which is a rectangular plate, and the thickness of the rectangular plate is not less than 20 mm.

[0067] The support column 112 has two pieces, which are rectangular plates. The thickness of the rectangular plates is not less than 30 mm, and the length is consistent with the length of the support bottom plate 111.

[0068] There are two side panels 12, which are vertically symmetrically installed at the two ends of the length of the bracket 11. The upper part of the side panel 12 is a concave arc surface 121, and the lower part is provided with two semicircular rectangular grooves 122. The thickness of the side panel 12 is not less than 30mm.

[0069] The concave arc surface 121 matches the cylinder of the balancing weight, the semicircular diameter of the two rectangular grooves 122 is consistent with the outer diameter of the large diameter section 21 of the axle 2, the depth is 3 / 4 to 4 / 5 of the diameter of the axle 2, and the two rectangular grooves 122 are symmetrically distributed on both sides based on the center line of the height direction of the side plate 12.

[0070] There are two ear seat plates 13, which are vertically and symmetrically installed on the upper surface of the two sides of the length of the bracket 11, and are in a semicircular right-angled triangle structure with a thickness of not less than 30 mm.

[0071] The short right-angle side and the long right-angle side of the right-angle triangle structure are respectively connected to the middle positions of the support column 112 and the frame bottom plate 111. The short right-angle side of the right-angle triangle structure is 3 / 4 to 4 / 5 of the length of the long right-angle side.

[0072] The intersection of the right-angled long side and the hypotenuse of the right-angled triangle structure is set as a semicircular structure. A circular through hole 131 is opened on the semicircular structure, and the center of the circular through hole 131 coincides with the center of the semicircular structure.

[0073] Combination Figure 7 As shown, the axle 2 has two parts, both made of Q235A, and is a concentric stepped cylindrical structure with different diameters, wherein the middle section is a large diameter section 21, the two ends of the large diameter section 21 are medium diameter sections 22, and the outside of the medium diameter section 22 is a small diameter section 23.

[0074] The outer diameter of the small diameter section 23 matches the inner diameter of the rolling bearing 34 (transition fit), the length of the small diameter section 23 = the thickness of the rolling bearing 34 - 0.10 to 0.20 mm, and two threaded blind holes 231 are vertically processed on the end face of the small diameter section 23 in two equal parts, the aperture and hole spacing of the threaded blind holes 231 match the two through holes on the end face of the end cover 33, and the hole depth matches the fastening bolt 7.

[0075] The outer diameter of the middle diameter section 22 matches the width (semicircular diameter) of the rectangular groove 122 at the lower portion 2 of the side vertical plate 12 (clearance fit, the clearance amount is 0.05-0.10 mm).

[0076] The outer diameter of the large diameter section 21 = the outer diameter of the medium diameter section 22 + 10 to 15 mm, and the length of the large diameter section 21 = the inner side spacing value between the two side vertical plates 12 + 0.50 to 1.0 mm.

[0077] Combination Figure 8 As shown, there are four sets of rollers 3, which are respectively connected to the corresponding middle diameter section 22 and small diameter section 23 of the wheel axle 2, including a wheel body 31, a wheel cover 32, an end cover 33 and a rolling bearing 34.

[0078] The wheel body 31 has 4 parts, all made of Q235A, and is a concentric cylindrical structure with holes. The difference between the diameter of the large diameter section and the diameter of the small diameter section is 8 to 10 mm. Six threaded blind holes are vertically processed on the outer end surface of the cylinder of the small diameter section according to six equal parts. The hole diameter and hole spacing match the six circular through holes on the wheel cover 32, and the hole depth matches the wheel cover bolt 4. The core of the concentric cylindrical structure is vertically processed with multiple concentric reducing holes. The stepped hole has an axis line that coincides with the axis line of the concentric cylindrical structure with different diameters; the end face of the large diameter hole in the stepped hole coincides with the end face of the small diameter section of the concentric cylindrical structure with different diameters; the diameter of the large diameter hole matches the outer diameter of the rolling bearing 34 (preferably with a transition fit); the inner diameter of the minimum diameter hole is the minimum section diameter of the axle 2 + 3 to 5 mm; the inner side hole of the small diameter hole is processed into an isosceles trapezoidal cross-section, and the outer diameter and width match the sealing ring 5.

[0079] There are 4 wheel covers 32, all made of Q235A, which are stepped concentric cylindrical structures with different diameters. Six circular through holes are vertically processed on the end face of the large diameter section of the cylinder according to six equal parts, and the hole diameter and hole spacing match the six threaded blind holes on the end face of the wheel body 31; a threaded through hole is vertically processed in the center of the end face, and the hole diameter matches the threaded section of the oil injection nozzle 6, and the axis of the threaded through hole coincides with the axis of the concentric cylindrical structure with different diameters; the outer diameter of the small diameter section of the cylinder matches the outer diameter of the large diameter section of the wheel body 31. The inner diameters of the step holes are matched (clearance fit, the clearance is 0.10-0.20mm), the length of the small diameter section of the cylinder = the depth of the large diameter section of the step hole of the wheel body 31 - the thickness of the rolling bearing 34 + 0.20mm, to ensure the axial positioning of the rolling bearing 34; a circular blind hole is vertically processed on the end face of the small diameter section of the cylinder, the axis of the blind hole coincides with the axis of the concentric and different diameter cylindrical structure, and the depth of the blind hole is 3 / 4-4 / 5 of the length of the concentric and different diameter cylindrical structure.

[0080] There are 4 end covers 33, made of Q235A, and are cylindrical structures with holes; two circular through holes are vertically processed on the end face of the cylindrical structure in two equal parts, and the hole diameter and hole spacing match the two threaded blind holes 231 on the end face of the wheel axle 2.

[0081] There are 4 sets of rolling bearings 34, which are heavy-duty deep groove bearings and are standard parts.

[0082] There are four sealing rings 5, which are annular sealing rings made of polymer materials and are standard parts.

[0083] There are four sets of oiling nozzles 6, which are standard parts. The outer diameter and pitch of the threaded section are consistent with the threaded through hole on the end surface of the wheel cover 32.

[0084] The mobile support device of the utility model needs to be assembled and formed before use, that is:

[0085] 1) Assembling the bracket 11 of the vehicle body 1: First, place the bracket bottom plate 111 flat on a dedicated platform; then, place two bracket columns 112 symmetrically on both sides of the bracket bottom plate 111 with the center line of the length direction of the bracket bottom plate 111 as the reference, and the end faces are flush with the two end faces of the bracket bottom plate 111, spot welded to position, measured and corrected, and welded and fixed; then, welded and fixed in the center of the outer side of the bracket column 112; finally, connect the two ear seat plates 13 to the middle positions of the bracket columns 112 on both sides of the vehicle body 1 respectively;

[0086] 2) Connecting the wheel axle 2 to the vehicle body 1: First, place the two side plates 12 symmetrically at both ends of the two wheel axles 2 (the lower rectangular groove 122 fits the middle diameter section 22 of the wheel axle 2, that is, the shaft shoulder of the middle diameter section 22 is flush with the inner side of the side plate 12), and ensure that the inner side spacing of the two side plates 12 meets the length requirements of the bracket 11, spot weld to position, measure and calibrate, and then weld (full weld) to fix;

[0087] 3) Forming of the vehicle body 1 and the axle 2: Place the bracket 11 as a whole in the middle of the axle 2 where the side stand 12 is welded, spot weld it and position it after correcting the left and right symmetry, and weld it after measuring and correcting it;

[0088] 4) Assembly of roller 3: First, use the temperature difference method or the knocking method to install the rolling bearing 34 in the wheel body 31 of the four sets of rollers 3, and then install the sealing ring 5; thereafter, install the four sets of rollers 3 on the small diameter sections 23 of the four end faces of the two wheel axles 2, to ensure that the inner hole of the rolling bearing 34 is in close contact with the cylindrical surface of the middle diameter section 22; then, install the four end covers 33 on the four end faces of the two wheel axles 2, tighten with the fastening bolts 7, and prevent loosening with electric washers; finally, install the four wheel covers 32 on the four wheel bodies 31, tighten with the wheel cover bolts 4, and prevent loosening with electric washers, and install an oiling nozzle 6 on the core of the wheel cover 32, and ensure the effective lubrication function of the rolling bearing 34 at all times by lubricating the oiling holes on the oiling nozzle 6.

[0089] After the assembly of the mobile support device of the utility model is completed, it can be put into the disassembly and installation of the vertical balance weight of the two-roller cycle cold rolling mill with a balance weight. Figure 8As shown, when used on site, the mobile support device 100 of the utility model is pushed and displaced along the pre-laid track to the right below the counterweight 200 to receive the counterweight 200 that has fallen after removal. During installation, the mobile support device 100 of the utility model carrying the counterweight 200 is moved and transported to the designated area of ​​the counterweight room together with the repaired counterweight.

[0090] The utility model mobile support device is arranged as a whole outside the weight room of the underground space, and is used for supporting and transporting the vertical balance weight during installation and disassembly operations. The design is reasonable, the structure is simple, the processing and preparation are convenient, the materials are common, the implementation cost is low, and the use is convenient. The overall frame structure is easy to use and maintain in daily use, which effectively guarantees the safety of daily inspection and maintenance operations of the vertical balance weight, and provides a stable carrier for the subsequent calibration of the motion gap, eliminating the safety hazards during the disassembly and assembly of the balance weight from the source, and can achieve zero risk in the disassembly and assembly operations. The car body adopts a symmetrical frame structure and is welded to form an effective support for the cylindrical surface of the hammer body of the balance weight during disassembly and installation operations, with good support stability and good anti-skid and anti-rolling effects; four sets of rollers are connected to the car body through two wheel axles under the car body to form a complete motion structure, which is used to realize the horizontal displacement (transfer) of the balance weight through the track, saving labor, time and effort. The step-shaped concentric and different-diameter cylindrical structure of the roller wheel body is convenient for the wheel body to fit the track, and has its own axial positioning function to avoid deviation from the track during transportation. The ear seat plates on both sides of the car body create favorable conditions for providing power traction, facilitate effective displacement and transportation, further improve work efficiency, and at the same time serve as reinforcing ribs on both sides of the car body bracket. When disassembling and assembling the counterweight, it can not only play a vertical support function, but also achieve horizontal displacement. The arc-shaped side plates on both sides are evenly loaded, which is convenient for lifting operations in closed spaces. It is practical and efficient. It has strong versatility and has certain reference and application value for the improvement of safety technical measures and tooling for disassembly and assembly of vertical counterweights in underground spaces of two-roller periodic cold rolling mills and other similar underground cramped spaces.

[0091] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A mobile supporting device for a counterweight of a seamless steel tube cold rolling mill, characterized in that: Including body, axle and roller; The vehicle body is a symmetrical frame structure, including a bracket, a side plate and a lug seat plate; The side panels are provided with two pieces, which are vertically symmetrically arranged at the two ends of the length of the bracket; The top surface of the side plate is a supporting position; The ear seat plates are provided with two pieces, which are vertically symmetrically arranged on the upper surfaces of the two sides of the length of the bracket; The two ends of the wheel axle respectively pass through the lower part of the corresponding side vertical plate and are located outside the vehicle body; The roller is connected to the end position of the wheel shaft.

2. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 1, characterized in that: The support comprises a frame bottom plate and a support column; The frame bottom plate is a rectangular plate; The support columns are provided with two pieces, both of which are rectangular plates, and are vertically symmetrically arranged on the upper surface of the length axis of the frame bottom plate.

3. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 2, characterized in that: The waist position of the inner side surface of the side upright plate is connected to the end of the frame bottom plate; The top surface of the side stand is an inwardly concave arc surface, and two semicircular rectangular grooves are opened at the bottom; The two rectangular grooves are symmetrically arranged on both sides of the height axis of the side vertical plate.

4. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 2, characterized in that: The ear seat plate is a right-angled triangle structure, and its right-angled short side and right-angled long side are respectively connected to the middle position of the support column and the frame bottom plate; The intersection of the right-angled long side and the oblique side of the ear seat plate is arranged as a semicircular structure, and a circular through hole is opened on the semicircular structure.

5. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 3, characterized in that: There are two wheel axles, both of which are concentric stepped cylindrical structures with different diameters, and the middle section is the large diameter section; Both ends of the large diameter section are medium diameter sections; The outer end of the middle diameter section is a small diameter section; The middle diameter section is located in the rectangular groove.

6. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 5, characterized in that: There are four rollers, which are respectively connected to the corresponding middle diameter section and small diameter section of the wheel axle, and include a wheel body, a wheel cover, an end cover and a rolling bearing; The wheel body is sleeved on the middle diameter section of the wheel axle; The rolling bearing is located in the wheel body and is sleeved on the small diameter section of the wheel axle; The end cover is located in the wheel body and is arranged on the outer side of the rolling bearing, and is fixed to the end surface of the small diameter section of the wheel axle by screws; The wheel cover is arranged on the outer side of the wheel body and connected with the wheel body through screws.

7. The mobile supporting device for the counterweight of a seamless steel tube cold rolling mill according to claim 6, characterized in that: The wheel cover is provided with an oiling nozzle.

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