High-temperature protection device of crown block

Abstract

The utility model belongs to the technical field of crown blocks in steel smelting production, and discloses a crown block high-temperature protection device which mainly comprises a protection cover and a heat insulation shell, the protection cover is divided into an installation bottom plate, a supporting cover body and a protection cover body, and the heat insulation shell comprises a fixed shell body and a movable shell body. And the two can be assembled by adjusting the mounting positions through bolts, so that a containing cavity is conveniently formed in a narrow space and is used for placing the hydraulic thruster. In addition, the high-temperature protection device is further provided with a heat dissipation grid, so that heat in the protection cover body is quickly diffused, and the low-temperature environment of the hydraulic thruster in the heat insulation shell is kept. Through double-layer heat insulation measures and a heat sink heat dissipation mode, the hydraulic pusher is effectively protected against high temperature influences, normal work of the hydraulic pusher is guaranteed, and the service life of the hydraulic pusher is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of overhead cranes in steel smelting production, and specifically relates to a high-temperature protection device for an overhead crane. The high-temperature protection device is installed on a matching hydraulic pusher below an auxiliary hook brake. Background Art

[0002] In the production process of our company's steelmaking plant, the iron addition across the 1# and 2# overhead crane converters is a key process. Due to the high temperature of the molten iron and the specific environment created by the converter operation, part of the flue gas will be extracted with the secondary dust removal system, while the other part of the flue gas will be processed by the external tertiary dust removal system. However, despite the existence of the dust removal system, the overhead crane auxiliary trolley will still be short-term smoked by the high-temperature flue gas during the iron addition process. This high-temperature environment has a serious impact on the components of the overhead crane auxiliary trolley, especially the hydraulic pusher of the auxiliary hook brake.

[0003] As an important part of the overhead crane auxiliary trolley, the auxiliary hook brake hydraulic pusher is mainly responsible for the braking and releasing actions. Therefore, the stability and reliability of its performance are crucial to the safe operation of the overhead crane. However, during the iron mixing process, due to the continuous fumigation of high-temperature flue gas, the material properties of the hydraulic pusher seal ring will change, resulting in a gradual decrease in its sealing effect, and even aging and hardening. This not only affects the normal operation of the hydraulic pusher, but also shortens its service life and increases the frequency of replacement. In addition, frequent replacement not only increases the production cost of the steel plant, but also affects production efficiency and production safety.

[0004] Faced with the challenge of high-temperature flue gas, traditional hydraulic pusher sealing ring materials are often unable to withstand long-term fumigation and are prone to aging, hardening and other problems. This not only affects the normal operation of the hydraulic pusher, but may also cause the braking performance of the overhead crane auxiliary trolley to deteriorate and even cause safety accidents. Therefore, how to improve the sealing performance of the hydraulic pusher and improve its high temperature resistance through external measures has become a technical problem that needs to be solved urgently in steel mills. Utility Model Content

[0005] In view of the problems in the background technology that the sealing ring of the auxiliary hook brake hydraulic pusher is aged and hardened due to the continuous fumigation of high-temperature smoke, which causes the braking performance of the overhead crane auxiliary trolley to decline and cause safety accidents, and the problem that the actual installation space of the hydraulic pusher is small, the utility model provides a high-temperature protection device for the overhead crane.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a high-temperature protection device for an overhead crane, including a protective cover, which is divided into a mounting base plate, a support cover body and a protective cover body from bottom to top, the support cover body and the protective cover body are integrally formed, and the two are fixed on the mounting base plate, and an insulating shell is arranged inside the protective cover body, the insulating shell includes a fixed shell and a movable shell, and the two are assembled by bolts to form a cavity for accommodating a hydraulic pusher, the fixed shell is connected to the inner wall of the protective cover body through a plurality of partitions, and oil pipe through holes and piston through holes are respectively arranged at the bottom and top of the fixed shell and the movable shell, and a movable space is left between the insulating shell and the protective cover body to facilitate the up and down movement of the transmission connecting rod of the auxiliary hook to realize braking.

[0007] As a further supplement to the above technical solution, first side sealing baffles are respectively provided on both sides of the fixed shell, and the two are respectively used to connect the inner walls of the protective cover body, second side sealing baffles are respectively provided on both sides of the movable shell, connecting plates are respectively vertically fixed on the two second side sealing baffles, at least two adjustment waist holes are provided on each of the connecting plates, and mounting screw holes corresponding to the adjustment waist holes are respectively provided on both side walls of the protective cover body, the bolts are successively passed through the mounting screw holes and the adjustment waist holes and the mounting position is adjusted to fix the movable shell to the protective cover body, so as to facilitate the assembly of the movable shell and the fixed shell into the required cavity in a narrow space.

[0008] As a further supplement to the above technical solution, two limit strips are provided on the inner side of each of the second side sealing baffles corresponding to each of the adjustment waist holes. The two limit strips are respectively distributed on the upper and lower sides of the adjustment waist hole, and both are of the same length as the adjustment waist hole. The two limit strips are used to limit the rotation of the nut or bolt head during the bolt installation process, so as to facilitate quick installation.

[0009] As a further supplement to the above technical solution, positioning pins are respectively provided on the two first side sealing baffles, and positioning holes corresponding to the positioning pins are respectively provided on the two second side sealing baffles. The positioning pins and positioning holes cooperate with each other to realize a quick sealing combination of the fixed shell and the movable shell.

[0010] A support plate is provided between the two connecting plates to ensure the structural stability of the connecting plates and to serve as a handle to facilitate on-site personnel to take and place the movable housing during installation.

[0011] As a further supplementary explanation of the above technical solution, a heat dissipation grille is fixed on the inner side of the protective cover body, which is used to diffuse the heat between the protective cover body and the insulation shell through a heat sink.

[0012] As a further explanation and limitation of the above technical solution, the heat dissipation grille includes a heat dissipation plate, on which a plurality of heat dissipation slots are arranged side by side, and a plurality of heat conductive plates are fixed side by side at the bottom of the heat dissipation plate, and the plurality of heat dissipation slots and the plurality of heat conductive plates are arranged in an alternating manner.

[0013] Compared with the installation before the transformation, the utility model has the following advantages after installation:

[0014] 1. The utility model customizes the protective cover into an integrally formed support cover body and protective cover body and an external mounting plate according to the actual installation environment and space constraints, so that the protective cover is more stable in structure and can cope with narrow installation spaces. Secondly, the design of the heat-insulating shell cleverly adopts a fixed shell and a movable shell, which are assembled into the required cavity through the cooperation of bolts and adjustment waist holes, which is not only convenient for installation and maintenance, but also can effectively protect the internal hydraulic pusher from high temperature. In addition, the use of the first side sealing baffle and the second side sealing baffle makes the connection between the heat-insulating shell and the protective cover body tighter, further improving the heat insulation effect.

[0015] 2. The utility model simplifies the complexity of on-site installation operations by taking two measures. On the one hand, the design of the limit strip makes it difficult for the nut or bolt head to rotate during the installation of the bolt, thereby improving the installation efficiency. On the other hand, the coordinated use of the locating pin and the locating hole enables the fixed shell and the movable shell to be quickly sealed and combined, further shortening the installation time. These two improvement measures not only improve work efficiency, but also reduce the error rate during the installation process, making the performance of the high temperature protection device more stable and reliable in actual applications.

[0016] 3. The utility model fixes the heat dissipation grille inside the protective cover body so that the heat accumulated in the protective cover body can be quickly diffused out, thereby maintaining the hydraulic pusher in the heat insulation shell to operate in a relatively low temperature environment. The heat dissipation slots and heat conducting plates of the heat dissipation grille are arranged in an alternating manner, making the heat dissipation effect more significant. This design not only improves the heat dissipation performance of the device, but also prolongs the service life of the hydraulic pusher, reduces maintenance costs, and brings significant economic benefits to actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the high temperature protection device of the utility model;

[0018] Figure 2 This is a structural diagram of the high temperature protection device of the utility model;

[0019] Figure 3 This is a structural diagram of the heat dissipation grille in an embodiment of the utility model;

[0020] Figure 4 It is a top view and a partial cross-sectional view of the high temperature protection device of the utility model;

[0021] Figure 5 for Figure 4 Sectional view of the AA section line;

[0022] Figure 6 This is a reference diagram for the use of the high temperature protection device in the implementation and transformation of the utility model.

[0023] In the figure: the protective cover is 1, the heat insulation shell is 2, the heat dissipation grille is 3, the positioning pin is 4, the positioning hole is 5, the support plate is 6, the mounting screw hole is 7, the limit strip is 8, the bolt is 9, and the partition is 10.

[0024] The protective cover includes: a mounting base plate 101 , a supporting cover body 102 , and a protective cover body 103 .

[0025] The heat-insulating shell includes a fixed shell 201, a movable shell 202, a first side sealing baffle 203, a second side sealing baffle 204, a connecting plate 205, an adjusting waist hole 206, a cavity 207, an oil pipe through hole 208, and a piston through hole 209.

[0026] The heat dissipation grille includes: a heat dissipation plate 301 , heat dissipation slots 302 , and a heat conducting sheet 303 . DETAILED DESCRIPTION

[0027] In order to further illustrate the technical solution of the utility model, the following Figures 1 to 6 According to the design, production and installation process of the high temperature protection device, we further illustrate the utility model through three embodiments. Embodiment 1

[0028] As attached Figures 1 to 5As shown, a high temperature protection device for an overhead crane includes a protection cover 1, which is divided into a mounting base plate 101, a support cover body 102 and a protection cover body 103 from bottom to top. The support cover body 102 and the protection cover body 103 are integrally formed and fixed on the mounting base plate 101. A heat insulation shell 2 is arranged in the protection cover body 103, and the heat insulation shell 2 includes a fixed shell 201 and a movable shell 202. The fixed shell 201 is connected to the inner wall of the protection cover body 103 through a plurality of partitions 10. First side sealing baffles 203 are respectively arranged on both sides of the fixed shell 201, and the two are respectively used to connect the protective cover body 103. Inner wall, second side sealing baffles 204 are respectively arranged on both sides of the movable housing 202, connecting plates 205 are respectively fixed vertically on the two second side sealing baffles 204, at least two adjusting waist holes 206 are arranged on each connecting plate 205, mounting screw holes 7 corresponding to the adjusting waist holes 206 are respectively arranged on the two side walls of the protective cover body 103, the bolts 9 pass through the mounting screw holes 7 and the adjusting waist holes 206 in sequence and adjust the mounting position to fix the movable housing 202 on the protective cover body 103, so as to facilitate the assembly of the movable housing 202 and the fixed housing 201 into the required cavity 207 in a narrow space for placing the hydraulic pusher. Oil pipe through holes 208 and piston through holes 209 are respectively arranged at the bottom and top of the fixed housing 201 and the movable housing 202, and a movable space is left between the heat insulation shell 2 and the protective cover body 103, so as to facilitate the up and down movement of the transmission connecting rod of the auxiliary hook to realize braking.

[0029] In this embodiment, a support plate 6 is provided between the two connecting plates 205. The support plate 6 is designed to ensure the structural stability of the connecting plates 205 and also serve as a handle for on-site personnel to facilitate taking and placing the movable housing 202 during installation. Embodiment 2

[0030] Since the supporting hydraulic pusher under the auxiliary hook brake is limited by space during installation, how to reduce the complexity of on-site installation operations.

[0031] As attached Figure 2 As shown, for this purpose, we take the following two measures: First, two limit strips 8 are provided on the inner side of each second side sealing baffle 204 corresponding to each adjusting waist hole 206. The two limit strips 8 are respectively distributed on the upper and lower sides of the adjusting waist hole 206, and both are of equal length to the adjusting waist hole 206. The two limit strips 8 are used to limit the rotation of the nut or bolt head during the installation of the bolt 9, so as to facilitate rapid installation. Second, positioning pins 4 are respectively provided on the two first side sealing baffles 203, and positioning holes 5 corresponding to the positioning pins 4 are respectively provided on the two second side sealing baffles 204. The positioning pins 4 and the positioning holes 5 cooperate with each other to realize the rapid sealing combination of the fixed shell 201 and the movable shell 202. Embodiment 3

[0032] In order to quickly dissipate the heat accumulated in the protective cover, the hydraulic pusher in the heat-insulating shell is kept in a relatively low temperature environment. Figure 3 As shown, a heat dissipation grille 3 is fixed on the inner side of the protective cover body 103, wherein the heat dissipation grille 3 includes a heat dissipation plate 301, on which a plurality of heat dissipation slots 302 are arranged side by side, and a plurality of heat conducting sheets 303 are fixed side by side at the bottom of the heat dissipation plate 301, and the plurality of heat dissipation slots 302 and the plurality of heat conducting sheets 303 are arranged in a staggered manner. The heat dissipation grille 3 dissipates the heat between the protective cover body 103 and the heat insulating shell 2 in a heat sink manner through the heat dissipation slots 302 and the heat conducting sheets 303.

[0033] The specific installation method and protection principle are described as follows:

[0034] 1. Specific installation method: First, remove the movable shell from the protective cover to ensure that there is enough space for subsequent installation steps. Next, use the mounting base to fix the protective cover to the bracket of the auxiliary hook to ensure stability. Then, place the matching hydraulic pusher under the brake in the cavity to ensure that it is in close contact with the insulation shell. Finally, use bolts to pass through the mounting screw holes and the adjustment waist holes to fix the movable shell to the protective cover body and complete the assembly with the fixed shell. The entire installation process is simple and efficient, suitable for quick installation in a small space.

[0035] 2. Protection principle of this design: During the iron mixing process, the hydraulic pusher has double-layer insulation measures between the protective cover and the insulation shell. The protection device mainly achieves protection through double-layer insulation measures and heat sink heat dissipation. The double-layer insulation measures are composed of a protective cover and an insulation shell, which effectively isolates the direct impact of high-temperature smoke on the hydraulic pusher. At the same time, the design of the heat dissipation grille allows the heat between the protective cover and the insulation shell to diffuse quickly, avoiding heat accumulation. This combination of double-layer insulation and heat sink heat dissipation ensures the normal operation of the hydraulic pusher in a high-temperature environment and extends its service life.

[0036] The technical transformation of the overhead crane's high temperature protection device has shown significant progress. First, in terms of structure, it adopts a modular design, which is easy to install and disassemble quickly, significantly improving maintenance efficiency. Secondly, the combination of double-layer insulation measures and heat sink heat dissipation not only effectively reduces the operating temperature of the hydraulic pusher, but also ensures the stability of the material properties of its sealing ring, further improving the reliability of the equipment. In addition, the design of the limit strip and positioning pin simplifies the installation process and reduces the complexity of operation. In summary, this technical transformation is not only innovative, but also outstanding in practicality and maintainability.

[0037] In addition, it should be understood that although the main features and advantages of the utility model are shown and described in the above specification, it is obvious to those skilled in the art that the specific implementation of the utility model is not limited to the details of the above exemplary embodiments, and the creative ideas and design ideas of the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model, which should be equivalent to the protection scope disclosed in the technical solution of the utility model. Therefore, no matter from which point of view, the embodiments should be described according to the implementation methods, but not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high temperature protection device for an overhead crane, comprising a protective cover (1), characterized in that: The protective cover (1) is divided into a mounting base plate (101), a supporting cover body (102) and a protective cover body (103) from bottom to top. The supporting cover body (102) and the protective cover body (103) are integrally formed and fixed to the mounting base plate (101). A heat insulating shell (2) is arranged inside the protective cover body (103). The heat insulating shell (2) comprises a fixed shell (201) and a movable shell (202). The two parts are assembled by bolts (9) to form a cavity (207) for accommodating a hydraulic pusher. The fixed shell (201) is connected to the inner wall of the protective cover body (103) by a plurality of partitions (10). Oil pipe through holes (208) and piston through holes (209) are respectively arranged at the bottom and top of the fixed shell (201) and the movable shell (202). A movable space is left between the heat insulating shell (2) and the protective cover body (103) to facilitate the upward and downward movement of the transmission connecting rod of the auxiliary hook to achieve braking.

2. The high temperature protection device for an overhead crane according to claim 1, characterized in that: First side sealing baffles (203) are respectively arranged on both sides of the fixed shell (201), and the two are respectively used to connect the inner wall of the protective cover body (103); second side sealing baffles (204) are respectively arranged on both sides of the movable shell (202); connecting plates (205) are respectively vertically fixed on the two second side sealing baffles (204); at least two adjusting waist holes (206) are arranged on each connecting plate (205); mounting screw holes (7) corresponding to the adjusting waist holes (206) are respectively arranged on the two side walls of the protective cover body (103); the bolts (9) are sequentially passed through the mounting screw holes (7) and the adjusting waist holes (206) and the mounting position is adjusted to fix the movable shell (202) on the protective cover body (103), so as to facilitate the assembly of the movable shell (202) and the fixed shell (201) into a required cavity (207) in a narrow space.

3. A high temperature protection device for an overhead crane according to claim 2, characterized in that: Two limit strips (8) are provided on the inner side of each of the second side sealing baffles (204) corresponding to each of the adjusting waist holes (206). The two limit strips (8) are respectively distributed on the upper and lower sides of the adjusting waist holes (206) and are of the same length as the adjusting waist holes (206). The two limit strips (8) are used to limit the rotation of the nuts or bolt heads of the bolts (9) during the installation process, so as to facilitate quick installation.

4. A high temperature protection device for an overhead crane according to claim 2 or 3, characterized in that: Positioning pins (4) are respectively provided on the two first side sealing baffles (203), and positioning holes (5) corresponding to the positioning pins (4) are respectively provided on the two second side sealing baffles (204), wherein the positioning pins (4) and the positioning holes (5) cooperate with each other to realize a fast sealing combination of the fixed housing (201) and the movable housing (202).

5. The high temperature protection device for an overhead crane according to claim 4, characterized in that: A support plate (6) is provided between the two connecting plates (205) to ensure the structural stability of the connecting plates (205) and to serve as a handle to facilitate on-site personnel to take and place the movable housing (202) during installation.

6. A high temperature protection device for an overhead crane according to any one of claims 1 to 3 or 5, characterized in that: A heat dissipation grille (3) is fixed on the inner side of the protective cover body (103) and is used to diffuse the heat between the protective cover body (103) and the heat insulation shell (2) through a heat sink.

7. A high temperature protection device for an overhead crane according to claim 6, characterized in that: The heat dissipation grille (3) comprises a heat dissipation plate (301), a plurality of heat dissipation slots (302) are arranged side by side on the heat dissipation plate (301), a plurality of heat conducting sheets (303) are fixed side by side at the bottom of the heat dissipation plate (301), and the plurality of heat dissipation slots (302) and the plurality of heat conducting sheets (303) are arranged in a staggered manner.

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