Metal-rubber composite clamp sheath for cold-rolled steel coil hoisting crane

Abstract

The clamp sheath of the metal-rubber composite structure used for the cold-rolled steel coil lifting crane of the present invention comprises: two side wings and a column sleeve, which is formed by integrally casting and vulcanizing rubber, the two side wings extend out from the lower end of the column sleeve to both sides respectively, a guide column hole is opened on the column sleeve, the clamp sheath is respectively installed on the clamp arm of the cold-rolled steel coil lifting crane through the clamp arm guide column, the clamp arm guide column passes through the guide column hole, and the clamp sheath is fixed on the clamp arm guide column, the clamp sheath of the metal-rubber composite structure also comprises: a steel cylinder, a bracket, a bearing and a connecting shaft, the bracket comprises: a steel plate and two groups of steel side plates, the steel plate is buried in the two side wings, a group of steel side plates are vertically welded at both ends of the steel plate, each group of steel side plates extends out from the side wing toward the column sleeve direction, each group of steel side plates is two parallel steel side plates, along the length direction of the steel side plates, a plurality of bearings are installed between the two steel side plates through the connecting shaft, the outer circumference of the bearing is coated with a rubber layer, and the steel cylinder is fixed in the guide column hole.

Description

Technical Field

[0001] The invention relates to a clamp sheath with a metal-rubber composite structure, in particular to a clamp sheath with a metal-rubber composite structure used for a cold-rolling steel coil hoisting crane. Background Art

[0002] The thickness of cold-rolled strip steel is generally thin, usually between 0.3mm and 2mm. Cold-rolled steel plates are generally lifted and transported by overhead crane clamps in the form of steel coils in multiple links of the production process and during transportation. The key link involves the surface quality of the steel plates. If no protective measures are taken for the overhead crane clamps, due to the tower-shaped edge of the steel coil, uneven end faces, and misaligned edges, the clamps will not only cause the steel coils to be clamped and scratched during the holding process, but also the long-term wear between the clamp arm and the steel coil will shorten the service life of the clamp arm and reduce the safety factor, increasing the safety risks during operation.

[0003] In recent years, there are two main protection methods used in the market, both of which can provide some protection for steel coils. One is to improve the protection of the overhead crane clamp. One form is to install a polymer wear-resistant plate or rubber plate fixed to the clamp arm on the inner side where the clamp arm contacts the steel coil. Another form is to install a polymer wear-resistant rod or a wing-edge rubber plate that can slide relative to the clamp arm in the guide frame of the clamp arm. The second is to add a protective plate to the end face of the steel coil. Among them, the first type of the first problem is that the clamp arm is fixed to the polymer wear-resistant plate or rubber plate. In the repeated friction movement with the steel coil, the polymer wear-resistant plate or rubber plate quickly wears out and loses its protective effect. In addition, the polymer plate has a very limited protective effect on the tower-shaped edge of the steel coil end face, uneven end face, and misaligned edge. The second type of the first problem is that there is sliding friction between the polymer wear-resistant rod or winged rubber plate and the clamp arm, which greatly reduces the service life of the product, and there is a situation that it is not resistant to impact and is fragile. During the collision and movement friction between the two wings and the frame, the two wings and the frame are in sliding friction, which seriously shortens the service life of the two wings. The protective effect is also limited; the second type of problems is that the cost of the steel coil end face protection plate that needs to be made is high, the size is large, the weight is heavy, and the operator needs to carry and install it on the steel coil every time, which is not only inconvenient to install but also greatly increases the labor intensity of the workers. During on-site use, the operators are reluctant to use it. Summary of the invention

[0004] The invention purpose of the present application is to provide a clamp sheath with a metal-rubber composite structure for a cold-rolled steel coil hoisting crane in order to address the shortcomings of the existing clamp sheaths, such as short service life and poor wear resistance. The clamp sheath with a metal-rubber composite structure can effectively protect the steel coil, has a long service life and is easy to install without affecting the original function of the clamp. It is a clamp sheath with a metal-rubber composite structure that is suitable for a wide range of applications.

[0005] In order to achieve the invention purpose of this application, this application adopts the following technical solutions:

[0006] The present invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane. The clamp sheath comprises: two side wings and a column sleeve, which is integrally cast and vulcanized by a rubber material. The two side wings extend out from the lower end of the column sleeve to both sides respectively, and a guide column hole is opened on the column sleeve. The clamp sheath is respectively mounted on the two clamp arms of the cold-rolled steel coil hoisting crane through clamp arm guide columns. The clamp arm guide columns pass through the guide column holes. The upper ends of the clamp arm guide columns are fixed to the upper ends of the clamp arms through nuts, and the lower ends of the clamp arm guide columns are fixed to the lower ends of the clamp arms through gaskets and nuts in sequence. A clamp is installed between the lower end of the clamp sheath and the gasket. Spring, the inner sides of the two side wings lean against the clamp end of the clamp arm, and the outer sides of the two side wings lean against the clamped object, wherein: the clamp sleeve also includes: a steel cylinder, a bracket, a bearing and a connecting shaft, and the bracket includes: a steel plate and two groups of steel side plates, the steel plate is buried in the two side wings, and a group of steel side plates are vertically welded at both ends of the steel plate, each group of steel side plates extends from the inside of the side wing toward the column sleeve, and each group of steel side plates is two parallel steel side plates. Along the length direction of the steel side plates, a number of bearings are installed between the two steel side plates through the connecting shaft, and the outer circumference of the above-mentioned bearing leans against the inner side of the clamp arm, and the steel cylinder is fixed in the guide column hole.

[0007] The present invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, wherein: the length of the steel cylinder is smaller than the length of the guide post hole, the clamp arm guide post passes through the steel cylinder, and the upper end of the spring is installed in the guide post hole at the lower end of the steel cylinder.

[0008] The invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, wherein a rubber layer is wrapped on the outer circumference of the bearing.

[0009] The invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, wherein: along the length direction of the steel side plates, a plurality of bearings are evenly arranged between two steel side plates through a connecting shaft.

[0010] The invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, wherein the bearing is a rolling bearing.

[0011] The invention discloses a clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, wherein the rubber wrapped on the outer circumference of the bearing is polyurethane, and the rubber on the two side wings and the column sleeve is polyurethane rubber or natural rubber.

[0012] Compared with the existing clamp sheaths, the clamp sheaths of the metal-rubber composite structure for the cold-rolled steel coil hoisting crane of the present invention have the following advantages:

[0013] ① According to the size of the clamp structure, the clamp sheath is designed with a metal-rubber composite structure of a metal skeleton / rubber vulcanized composite structure with a bearing guide wheel. The metal skeleton plays a shaping role, and the rubber plays a role in protection, shock absorption, wear reduction, long service life, and easy installation.

[0014] ② The design of the bearing guide wheel structure fundamentally changes the sliding friction between the clamp arm and the protective plate to rolling friction. The bearing rubber-encapsulated structure design plays a shock-absorbing and buffering role for the bearing, greatly improving the service life of the product. The change in friction form greatly reduces or even eliminates the wear on the clamp arm, greatly improves the safety factor of the crane arm, and protects the safety of personnel on the production site.

[0015] ③ The rubber wear-resistant buffer part of the wing plate of the clamp cover of the metal-rubber composite structure, the rubber main body, and the bearing rubber wheel are made of rubber with different properties, and the hardness is designed in the use structure. The rubber wear-resistant buffer part in contact with the steel coil is made of rubber that is impact-resistant, wear-resistant, and has a low Shore hardness. The characteristics of the rubber used are helpful to prevent damage to the steel coil edge and absorb impact force and wear resistance; the rubber main body in contact with the frame is made of rubber that is impact-resistant and has a high Shore hardness. The characteristics of the rubber used are helpful to the clamp cover of the metal-rubber composite structure to have a relatively small position change in the guide frame and play a buffering role; the bearing rubber wheel is made of cast polyurethane rubber with high impact resistance, low friction coefficient, and high Shore hardness. The characteristics of the rubber used are helpful to impact resistance and the low friction coefficient and tear resistance of the high-hardness polyurethane rubber surface. The bearing and liquid polyurethane adopt a casting process, which is convenient for production and easy to achieve tear resistance. The overall structure of the clamp cover of the metal-rubber composite structure has the functions of steel coil protection, shock absorption, buffering, and wear resistance.

[0016] ④ The assembly method of the clamp sleeve and the clamp of the metal-rubber composite structure is simple. The clamp guide post is installed upward into the guide frame from the lower end of the clamp arm, and the initial position positioning spring of the clamp sleeve of the metal-rubber composite structure and the clamp sleeve of the metal-rubber composite structure are installed downward in sequence through the upper end of the clamp guide post. Adjust the guide post to the nut positioning position, install the clamp guide post positioning plate, and tighten the clamp guide post fastening nuts at both ends.

[0017] ⑤ The clamp sheath of the metal-rubber composite structure has a very good effect during on-site use. The clamp sheath of the metal-rubber composite structure of the present invention fills the gap in the domestic market and reaches the leading level. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of a clamp sheath of an existing metal-rubber composite structure mounted on a cold rolling steel coil hoisting crane. For the sake of clarity, a clamp arm of the cold rolling steel coil hoisting crane is cut away;

[0019] Figure 2 for Figure 1 Schematic diagram of the cross section at AA in the middle;

[0020] Figure 3 Figure 1 A schematic diagram of an enlarged forward section of a clamp sheath of a metal-rubber composite structure;

[0021] FIG4 is a schematic cross-sectional view of a section taken along line BB in FIG3 ;

[0022] Figure 5 It is a schematic diagram of the front view of the clamp sheath of the metal-rubber composite structure of the present invention mounted on the cold rolling steel coil hoisting crane. For the sake of clarity, a clamp arm of the cold rolling steel coil hoisting crane is cross-sectionally processed;

[0023] Figure 6 for Figure 5 Schematic diagram of the cross section at CC;

[0024] Figure 7 Figure 5 A schematic diagram of an enlarged forward section of a clamp sheath of a metal-rubber composite structure;

[0025] FIG8 is a schematic cross-sectional view of a portion DD in FIG7 ;

[0026] FIG. 9 is a side schematic diagram of FIG. 8 .

[0027] exist Figure 1 In Figure 9, number 1 is the clamp arm; number 2 is the clamp opening and closing mechanism; number 3 is the transmission mechanism; number 4 is the nut; number 5 is the clamp sheath of the metal-rubber composite structure; number 6 is the spring; number 7 is the clamp arm guide column; number 8 is the gasket; number 9 is the steel cylinder; number 10 is the connecting shaft; number 11 is the bearing; number 12 is the bracket; number 13 is the side wing; number 14 is the guide column hole; number 15 is the column sleeve; number 16 is the steel plate; number 17 is the steel side plate; number 18 is the clamp arm foot. DETAILED DESCRIPTION

[0028] like Figure 1 and Figure 5As shown, the cold rolling steel coil hoisting crane includes: two clamp arms 1, a clamp opening and closing mechanism 2 and a transmission mechanism 3, one end of the two clamp arms 1 is respectively connected to the clamp opening and closing mechanism 2, and the transmission mechanism 3 provides power for the clamp opening and closing mechanism 2.

[0029] like Figure 1 As shown in FIG4 , the existing clamp sheath 5 comprises: two side wings 13 and a column sleeve 15, which is integrally cast and vulcanized from a rubber material, the two side wings 13 respectively extend from the lower end of the column sleeve 15 to both sides, a guide column hole 14 is opened on the column sleeve 15, the clamp sheath 5 is respectively mounted on the two clamp arms 1 of the cold-rolled steel coil hoisting crane through the clamp arm guide column 7, the above-mentioned clamp arm guide column 7 passes through the above-mentioned guide column hole 14, the upper end of the clamp arm guide column 7 is fixed to the upper end of the clamp arm 1 through a nut 4, and the lower end of the clamp arm guide column 7 is fixed to the lower end of the clamp arm 1 through a gasket 8 and a nut 4 in turn, a spring 6 is installed between the lower end of the clamp sheath 5 of the metal-rubber composite structure and the gasket 8, the inner sides of the two side wings 13 lean against the clamp end of the clamp arm 1, and the outer sides of the two side wings 13 lean against the clamped object.

[0030] like Figure 5 As shown in FIG9 , the clamp sheath 5 of the metal-rubber composite structure for the cold-rolled steel coil hoisting crane of the present application is based on the existing clamp sheath 5 of the metal-rubber composite structure for the cold-rolled steel coil hoisting crane and further includes: a steel cylinder 9, a bracket 12, a bearing 11 and a connecting shaft 10, and the bracket 12 includes: a steel plate 16 and two groups of steel side plates 17, the steel plate 16 is buried in the two side wings 13, and a group of steel side plates 17 are vertically welded at both ends of the steel plate 16, each group of steel side plates 17 extends from the side wing 13 toward the column sleeve 15, and each group of steel side plates 17 extends from the side wing 13 to the column sleeve 15. The plate 17 is two parallel steel side plates 17. Along the length direction of the steel side plates 17, a plurality of bearings 11 are evenly installed between the two steel side plates 17 through the connecting shaft 10. The bearing 11 is a rolling bearing. A rubber layer is wrapped on the outer circumference of the above-mentioned bearing 11. The rubber is polyurethane. The outer circumference of the above-mentioned bearing 11 is against the clamp end of the clamp arm 1. The steel cylinder 9 is fixed in the guide post hole 14. The length of the steel cylinder 9 is less than the length of the guide post hole 14. The clamp arm guide post 7 passes through the above-mentioned steel cylinder. The upper end of the spring 6 is installed in the guide post hole 14 at the lower end of the steel cylinder 9. The rubber on the side wing 13 and the column sleeve 15 is natural rubber.

[0031] The following is the working principle of the clamp sheath of the metal-rubber composite structure of the present invention:

[0032] First, the clamp sheath 5 of the metal-rubber composite structure of the clamp arms 1 on both sides is fitted and clamped with the end surface of the steel coil, and the clamp rises. The rubber wear-resistant buffer part surface of the side wing 13 of the clamp sheath 5 of the metal-rubber composite structure and the end of the steel coil do not slide relative to each other, and the clamp sheath of the metal-rubber composite structure and the steel coil slide down relative to the clamp arm guide column 7 together. When the steel plate surface of the inner diameter layer of the steel coil contacts the clamp arm foot 18, the relative movement between the clamp sheath 5 of the metal-rubber composite structure, the steel coil, the clamp arm guide column 7 and the clamp arm 1 stops. After lifting, the steel coil will not be scratched, and the overflow part of the end surface of the coil steel is embedded in the elastic rubber of the side wing 13 of the clamp sheath 5 of the metal-rubber composite structure, thereby protecting the steel plate shape of the end surface of the steel coil to the greatest extent. After being hoisted into place, as the clamp arm 1 falls away from the steel coil, the clamp sheath 5 of the metal-rubber composite structure returns to its initial position under the elastic force of the clamp sheath initial position positioning spring of the metal-rubber composite structure. The clamp sheath 5 of the metal-rubber composite structure of this design structure has a very good effect during on-site use.

[0033] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A clamp sheath of a metal-rubber composite structure for a cold-rolled steel coil hoisting crane, the clamp sheath (5) comprising: The two side wings (13) and the column sleeve (15) are integrally cast and vulcanized from a rubber material. The two side wings (13) extend out from the lower end of the column sleeve (15) to both sides. A guide post hole (14) is provided on the column sleeve (15). The clamp sleeve (5) is respectively mounted on the two clamp arms (1) of the cold rolling steel coil hoisting crane through the clamp arm guide posts (7). The clamp arm guide posts (7) pass through the guide post holes (14). The upper ends of the clamp arm guide posts (7) are fixed to the upper ends of the clamp arms (1) through nuts (4). The lower ends of the clamp arm guide posts (7) are fixed to the lower ends of the clamp arms (1) through gaskets (8) and nuts (4) in turn. A spring (6) is installed between the lower ends of the clamp sleeve (5) and the gaskets (8). The inner sides of the two side wings (13) are against the clamp ends of the clamp arms (1), and the outer sides of the two side wings (13) are against the clamp ends of the clamp arms (1). On the clamped object, it is characterized in that: the clamp sleeve (5) also includes: a steel cylinder (9), a bracket (12), a bearing (11) and a connecting shaft (10), and the bracket (12) includes: a steel plate (16) and two groups of steel side plates (17), the steel plate (16) is buried in the two side wings (13), and a group of steel side plates (17) are vertically welded at both ends of the steel plate (16), each group of steel side plates (17) extends from the side wing (13) toward the column sleeve (15), and each group of steel side plates (17) is two parallel steel side plates (17). Along the length direction of the steel side plates (17), a number of bearings (11) are installed between the two steel side plates (17) through the connecting shaft (10), and the outer circumference of the above-mentioned bearing (11) is against the inner side of the clamp arm (1), and the steel cylinder (9) is fixed in the guide column hole (14).

2. The metal-rubber composite clamp sheath for the cold-rolled steel coil hoisting crane according to claim 1, characterized in that: The length of the steel cylinder (9) is smaller than the length of the guide post hole (14), the clamp arm guide post (7) passes through the steel cylinder (9), and the upper end of the spring (6) is installed in the guide post hole (14) at the lower end of the steel cylinder (9).

3. The metal-rubber composite clamp sheath for the cold-rolled steel coil hoisting crane according to claim 2, characterized in that: A rubber layer is wrapped on the outer circumference of the bearing (11).

4. The metal-rubber composite clamp sheath for the cold rolling steel coil hoisting crane according to claim 3, characterized in that: Along the length direction of the steel side plates (17), a plurality of bearings (11) are evenly arranged between the two steel side plates (17) via a connecting shaft (10).

5. The metal-rubber composite clamp sheath for the cold rolling steel coil hoisting crane according to claim 4, characterized in that: The bearing (11) is a rolling bearing.

6. The metal-rubber composite clamp sheath for the cold rolling steel coil hoisting crane according to claim 5, characterized in that: The rubber wrapped on the outer circumference of the bearing (11) is polyurethane, and the rubber on the two side wings (13) and the column sleeve (15) is polyurethane rubber or natural rubber.

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