Trolley for replacing low-speed link rod of PQF rolling mill

Abstract

The utility model relates to a trolley for replacing a low-speed link rod of a PQF rolling mill. The trolley comprises a supporting plate, a bottom plate, a connecting rod, a bracket and a track, the supporting plates are fixedly arranged on the two sides of the bottom plate, and the upper sides of the supporting plates are of concave arc structures. The supporting plates are fixedly connected through a connecting rod; the concave arc-shaped structure of the supporting plate is provided with an upper layer bracket and a lower layer bracket which are respectively an upper bracket and a lower bracket; the upper bracket is arranged at two ends of the upper part of the concave arc-shaped structure of the supporting plate; two ends of the upper bracket are fixedly connected with the supporting plate respectively; the lower bracket is arranged in the middle of the concave arc-shaped structure of the supporting plate; two ends of the lower bracket are fixedly connected with the supporting plate respectively; wheels are arranged at the bottom of the bottom plate, and the trolley can reciprocate on the track through the wheels. The device can solve the problems of low conveying efficiency and manpower waste of the low-speed link rod.

Description

Technical Field

[0001] The utility model relates to the field of metallurgical mechanical equipment maintenance, in particular to a trolley used for replacing a low-speed connecting rod of a PQF rolling mill. Background Art

[0002] With the rapid development of steel enterprises, the demand for various new equipment is increasing day by day. Due to the requirement of precision in order to save energy, the installation of various equipment is becoming more and more compact. For example, the PQF continuous rolling mill used in the existing plant was introduced by MEER Company of Germany. The equipment has the advantages of high degree of automation, compact structure design and small footprint.

[0003] However, due to its compact structural design, the maintenance space is small, which makes maintenance inconvenient. At present, when the PQF continuous rolling mill needs to be repaired and the low-speed connecting rod of the rolling mill needs to be replaced, it is impossible to use crane equipment for transportation due to the small space. Instead, multiple people can only use a chain to transport the connecting rod. During the actual maintenance work, the area is oily and dark, the working environment is relatively harsh, the dismantling period is long, and each connecting rod must be transported backwards, which results in problems such as waste of manpower, low operating efficiency, and poor safety assurance. Summary of the invention

[0004] The utility model provides a trolley for replacing a low-speed connecting rod of a PQF rolling mill. The device can solve the problems of low efficiency in transporting the low-speed connecting rod and waste of manpower.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A trolley for replacing a low-speed connecting rod of a PQF rolling mill comprises a support plate, a bottom plate, a connecting rod, a bracket and a track; the support plates are fixedly arranged on both sides of the bottom plate, and the upper side of the support plates is a concave arc structure; the support plates are fixedly connected by connecting rods;

[0007] An upper and lower bracket is provided on the concave arc structure of the support plate, which are an upper bracket and a lower bracket respectively; the upper bracket is arranged at the two ends of the upper part of the concave arc structure of the support plate, and the two ends of the upper bracket are respectively fixedly connected to the support plate; the lower bracket is arranged in the middle part of the concave arc structure of the support plate, and the two ends of the lower bracket are respectively fixedly connected to the support plate; wheels are provided at the bottom of the base plate, and the trolley can reciprocate on the track through the wheels.

[0008] The upper bracket and the lower bracket are both V-shaped structures.

[0009] Two groups of stoppers are fixedly provided on the upper side of the upper bracket, and the distance between the two groups of stoppers is greater than the diameter of the connecting rod.

[0010] The wheels have brakes.

[0011] A trolley for replacing a low-speed connecting rod of a PQF rolling mill also includes a hydraulic cylinder; the hydraulic cylinder is arranged at the end of a track; the push rod end of the hydraulic cylinder is detachably connected to the trolley; the hydraulic cylinder can drive the trolley to reciprocate on the track.

[0012] The push rod end of the hydraulic cylinder is connected to the trolley through bolts.

[0013] The push rod end of the hydraulic cylinder is connected to the trolley through a hook.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1) When replacing the low-speed connecting rod of the PQF rolling mill, the connecting rod can be placed on the bracket, and the trolley can reciprocate on the track to realize the transportation of the connecting rod, improve the transportation efficiency, and greatly reduce the intensity of manual work; in addition, the upper and lower layered brackets can be used for the transportation operation of replacing connecting rods of different heights, which helps to further facilitate the operation and improve the transportation efficiency.

[0016] 2) In the utility model, the upper side of the support plate is a concave arc structure, which can reduce the weight of the trolley and increase the operating space, making it convenient to remove the connecting rod from the rolling mill and place it on the lower bracket.

[0017] 3) In the present invention, both the upper and lower brackets can adopt a V-shaped structure, and the connecting rod placed on the V-shaped structure can reduce shaking and ensure stable transportation.

[0018] 4) In the utility model, a stopper is provided on the upper bracket to prevent the connecting rod from falling off during transportation.

[0019] 5) In the utility model, a hydraulic cylinder can be used to drive the trolley to reciprocate on the track, thereby further improving the transportation efficiency and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0022] Figure 2 It is a cross-sectional view of the structure of Example 1 of the present utility model.

[0023] Figure 3 It is a schematic diagram of placing connecting rods on the upper and lower brackets in Example 1 of the utility model.

[0024] Figure 4It is a schematic diagram of the V-shaped structure of the upper bracket of Example 2 of the utility model.

[0025] Figure 5 It is a structural schematic diagram of embodiment 3 of the present utility model.

[0026] Figure 6 It is an application schematic diagram of Example 3 of the utility model.

[0027] Description of reference numerals:

[0028] In the figure: 1. PQF rolling mill 2. Linkage 3. Support plate 4. Bottom plate 5. Connecting rod 6. Bracket 7. Track 8. Wheel 9. Block 10. Hydraulic cylinder 21. Linkage in transport 22. Linkage to be removed or location of pre-installed linkage 61. Upper bracket 62. Lower bracket DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0031] [Example 1]

[0032] like Figures 1 to 3 As shown, a trolley for replacing the low-speed connecting rod of a PQF rolling mill includes a support plate 3, a bottom plate 4, a connecting rod 5, a bracket 6 and a track 7. The support plate 3 is fixedly arranged on both sides of the bottom plate 4, and the upper side of the support plate 3 is a concave arc structure. The support plates 3 are fixedly connected by connecting rods 5. An upper and lower layer of brackets 6 are arranged on the concave arc structure of the support plate 3, which are an upper bracket 61 and a lower bracket 62 respectively. The upper bracket 61 is arranged at both ends of the upper part of the concave arc structure of the support plate 3, and the two ends of the upper bracket 61 are respectively fixedly connected to the support plate 3; the lower bracket 62 is arranged in the middle of the concave arc structure of the support plate 3, and the two ends of the lower bracket 62 are respectively fixedly connected to the support plate 3. Wheels 8 are arranged at the bottom of the bottom plate 4, and the trolley can reciprocate on the track 7 through the wheels 8.

[0033] [Example 2]

[0034] A trolley for replacing a low-speed connecting rod of a PQF rolling mill comprises a support plate 3, a bottom plate 4, a connecting rod 5, a bracket 6 and a track 7. The support plate 3 is fixedly arranged on both sides of the bottom plate 4, and the upper side of the support plate 3 is a concave arc structure. The support plates 3 are fixedly connected by connecting rods 5. An upper and lower layer of brackets 6 are arranged on the concave arc structure of the support plate 3, which are an upper bracket 61 and a lower bracket 62 respectively. The upper bracket 61 is arranged at both ends of the upper part of the concave arc structure of the support plate 3, and the two ends of the upper bracket 61 are respectively fixedly connected to the support plate 3; the lower bracket 62 is arranged in the middle of the concave arc structure of the support plate 3, and the two ends of the lower bracket 62 are respectively fixedly connected to the support plate 3. Wheels 8 are arranged at the bottom of the bottom plate 4, and the trolley can reciprocate on the track 7 through the wheels 8.

[0035] Among them, the upper bracket 61 and the lower bracket 62 are both V-shaped structures. Figure 4 shown.

[0036] [Example 3]

[0037] like Figure 5 and 6 As shown, a trolley for replacing the low-speed connecting rod of a PQF rolling mill includes a support plate 3, a bottom plate 4, a connecting rod 5, a bracket 6 and a track 7. The support plate 3 is fixedly arranged on both sides of the bottom plate 4, and the upper side of the support plate 3 is a concave arc structure. The support plates 3 are fixedly connected by connecting rods 5. An upper and lower layer of brackets 6 are arranged on the concave arc structure of the support plate 3, which are an upper bracket 61 and a lower bracket 62 respectively. The upper bracket 61 is arranged at both ends of the upper part of the concave arc structure of the support plate 3, and the two ends of the upper bracket 61 are respectively fixedly connected to the support plate 3; the lower bracket 62 is arranged in the middle of the concave arc structure of the support plate 3, and the two ends of the lower bracket 62 are respectively fixedly connected to the support plate 3. Wheels 8 are arranged at the bottom of the bottom plate 4, and the trolley can reciprocate on the track 7 through the wheels 8.

[0038] Two groups of stoppers 9 are fixedly provided on the upper side of the upper bracket 61, and the distance between the two groups of stoppers 9 is greater than the diameter of the connecting rod 2. When the connecting rod 2 removed from the PQF rolling mill is placed on the upper bracket 61 and transported, there will be inevitable shaking. By providing the stoppers 9, the connecting rod 2 can be prevented from falling due to shaking.

[0039] This embodiment further includes a hydraulic cylinder 10, which is arranged at the end of the track 7. The push rod end of the hydraulic cylinder 10 is connected to the trolley by bolts or by hooks (when the hook is connected, the hook is arranged at the push rod end and the hanging ring is arranged on the trolley), and the hydraulic cylinder 10 can drive the trolley to reciprocate on the track.

[0040] The working process of the above embodiments is roughly the same. When the PQF rolling mill needs to replace the connecting rod or remove the connecting rod, the connecting rod can be placed on the bracket for transportation. And according to the height at which the connecting rod is installed on the PQF rolling mill, the upper bracket 61 or the lower bracket 62 can be selected, or the upper and lower brackets can be used at the same time to transport the connecting rod.

[0041] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. In addition, the various different embodiments of the present invention can also be arbitrarily combined, as long as they do not violate the idea of ​​the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A trolley for replacing a low-speed connecting rod of a PQF rolling mill, characterized in that: It includes a support plate, a bottom plate, a connecting rod, a bracket and a track; the support plates are fixedly arranged on both sides of the bottom plate, and the upper side of the support plates is a concave arc structure; the support plates are fixedly connected by connecting rods; An upper and lower bracket is provided on the concave arc structure of the support plate, which are an upper bracket and a lower bracket respectively; the upper bracket is arranged at the two ends of the upper part of the concave arc structure of the support plate, and the two ends of the upper bracket are respectively fixedly connected to the support plate; the lower bracket is arranged in the middle part of the concave arc structure of the support plate, and the two ends of the lower bracket are respectively fixedly connected to the support plate; wheels are provided at the bottom of the base plate, and the trolley can reciprocate on the track through the wheels.

2. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 1, characterized in that: The upper bracket and the lower bracket are both V-shaped structures.

3. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 1, characterized in that: Two groups of stoppers are fixedly provided on the upper side of the upper bracket, and the distance between the two groups of stoppers is greater than the diameter of the connecting rod.

4. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 1, characterized in that: The wheels have brakes.

5. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 1, characterized in that: It also includes a hydraulic cylinder; the hydraulic cylinder is arranged at the end of the track; the push rod end of the hydraulic cylinder is detachably connected to the trolley; the hydraulic cylinder can drive the trolley to reciprocate on the track.

6. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 5, characterized in that: The push rod end of the hydraulic cylinder is connected to the trolley through bolts.

7. A trolley for replacing a low-speed connecting rod of a PQF rolling mill according to claim 5, characterized in that: The push rod end of the hydraulic cylinder is connected to the trolley through a hook.

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