Auxiliary tool for large equipment to enter cabin and using method of auxiliary tool

Abstract

The auxiliary tool comprises a roller trolley and a guide rail, the guide rail is an I-shaped guide rail, the roller trolley comprises a trolley shell and a roller shaft, the roller shaft is rotatably installed on the trolley shell, a threaded oil groove is formed in a shaft body of the roller shaft, and the roller shaft is sleeved with a roller outer sleeve; the roller sleeves are arranged on the upper end faces of the guide rails in a rolling mode, and the side end faces of the trolley shell extend downwards in the direction of the guide rails to form limiting structures. According to the auxiliary tool, when the large equipment is hoisted into a cabin by a ship, high efficiency and labor saving can be achieved, the manpower input is reduced, the hoisting time is shortened, the safety is high, and the situation that the gravity of the equipment is concentrated on a few hoisting points to cause ship structure deformation is avoided. The invention further provides a using method of the auxiliary tool for entering the cabin by the large equipment.

Description

Technical Field

[0001] The invention belongs to the field of ship equipment, and in particular relates to a large-scale equipment cabin entry auxiliary tooling and a use method thereof. Background Art

[0002] During the shipbuilding process, large equipment such as main engines and generators are hoisted into the cabin. Usually, during the general assembly stage of the slipway, when the upper construction sections have not yet been hoisted and loaded, a sufficiently large hoisting hole is opened on the deck surface directly above the equipment base through flame cutting to facilitate the equipment to fall directly on the base. However, sometimes due to the influence of the hull structure and the loading conditions of the sections, the equipment hoisting hole cannot be opened directly above the base. After the equipment is vertically hoisted into the cabin, it is necessary to weld the lifting code on the hull structure and use the crane operator's hand winch to transport the equipment to the base. Considering the weight of the large equipment itself, this process requires the welding of multiple lifting codes and the arrangement of multiple crane operators to cooperate in the lifting. After the lifting is completed, the lifting codes are cut off and the welded parts are repainted. The whole process is time-consuming and labor-intensive, and there are certain safety hazards. Therefore, in order to avoid the shortcomings of the prior art, it is necessary to improve the prior art. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale equipment entering the cabin auxiliary tooling, which can be efficient and labor-saving when lifting large equipment into the ship cabin, reduce manpower input, shorten the lifting time, have high safety, and avoid the gravity of the equipment being concentrated on a few lifting points, thereby causing deformation of the hull structure. The present invention also provides a method for using the large-scale equipment entering the cabin auxiliary tooling.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A large equipment cabin entry auxiliary tooling comprises a roller trolley and a guide rail, wherein the guide rail is an I-shaped guide rail, and the roller trolley comprises a trolley shell and a roller shaft, wherein the roller shaft is rotatably mounted on the trolley shell, and the shaft body of the roller shaft is provided with a threaded oil groove, and a roller sleeve is sleeved on the roller shaft, and the roller sleeve is rotatably arranged on the upper end surface of the guide rail, and the side end surface of the trolley shell extends downward along the direction of the guide rail to form a limiting structure.

[0006] As a preferred solution for the above-mentioned auxiliary tooling for large equipment entering the cabin, a positioning plate is provided on the edge of the upper end surface of the trolley shell.

[0007] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, both ends of the roller shaft extend to the outside of the trolley shell, one end of the roller shaft is fixedly connected to an anti-slip plate, and the other end of the roller shaft is threadedly connected to a nut.

[0008] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, there are two roller shafts, the two roller shafts are arranged in parallel, and the two roller shafts are rotatably mounted on the trolley shell respectively.

[0009] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, the length of the roller jacket is smaller than the width between the side end surfaces of the trolley shell.

[0010] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, the roller shaft and the roller sleeve are clearance-fitted, and the clearance value is 0.03 to 0.05 mm.

[0011] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, the materials of the roller shaft, the roller jacket and the trolley shell are all high-strength steel.

[0012] As a preferred solution for the above-mentioned large equipment cabin entry auxiliary tooling, the roller jacket is cut from a high-pressure seamless steel pipe, and the thickness of the roller jacket is not less than 3 mm.

[0013] The present invention also provides a method for using a large-scale equipment cabin entry auxiliary tooling, which comprises the following steps:

[0014] Step 1: First, weld the ear plates used for equipment translation, lifting and adjustment on the hull structure, and arrange the hoist;

[0015] Step 2: assemble the roller trolley, fill the threaded oil groove of the roller shaft with lubricating oil, so that an oil film is formed between the roller shaft and the roller jacket;

[0016] Step 3: according to the distance from the required installation position of the equipment to the process hole, lay the guide rail of appropriate length, weld and fix the guide rail to the hull structure, and place wood blocks or rubber pads at the contact point between the base and the guide rail to keep the surface of the guide rail level;

[0017] Step 4, arranging an appropriate number of the roller trolleys on the guide rail according to the size of the equipment;

[0018] Step 5: Lift the equipment above the guide rail, adjust the position of the roller trolley to align it with the placement point on the equipment, and ensure that the equipment is placed stably;

[0019] Step 6: Hang the hoist and steel cable for the translation of the equipment, slowly pull the hoist, so that the equipment and the roller trolley slowly translate along the laid guide rail, and after the equipment translates to the required installation position, release the translation drag hoist and steel cable;

[0020] Step seven, hang the lifting ear plate on the deck structure surface and the lifting ear on the equipment with a hoist, slowly pull the hoist, lift the equipment out of the guide rail and the roller trolley, and then slowly lower the equipment. During the process, use other hoists to adjust the position of the equipment so that it is accurately placed on the base.

[0021] Compared with the prior art, the large equipment cabin entry auxiliary tooling provided by the present invention has the following beneficial effects:

[0022] The roller shaft of the present invention can be rotatably installed in the trolley shell, and a roller sleeve is sleeved on the roller shaft, and the roller sleeve is rollingly arranged on the upper end surface of the guide rail, so that the roller shaft and the roller sleeve are rolled on the guide rail to transport the equipment. The roller structure significantly reduces the friction resistance through rolling transportation, reduces manpower input when transporting equipment, and shortens the lifting time. The shaft body of the roller shaft is provided with a threaded oil groove, and the threaded oil groove is used to inject lubricating oil to form an oil film between the roller shaft and the roller sleeve, so that the rolling of the roller shaft and the roller sleeve is smoother and the friction between the roller shaft and the roller sleeve is smaller. The side end surface of the trolley shell extends downward in the direction of the guide rail to form a limiting structure. The limiting structure limits the rolling trolley on the guide rail to prevent derailment. The large equipment cabin entry auxiliary tooling can transport the large cabin entry equipment of the ship to the required installation location. Installation position, that is, installation base, guide rails can be laid in the cabin, and the guide rails are laid from the bottom of the lifting hole to the base where the equipment is installed. According to the size of the equipment to be lifted, a suitable number of roller trolleys are set on the guide rails. Large-scale cabin entry equipment enters the cabin from the lifting hole, and the roller trolley can carry the equipment, pull the equipment and, driven by the equipment, the roller trolley can roll along the guide rails to transport the equipment. The roller trolley significantly reduces friction resistance by rolling transportation on the guide rails, reduces manpower input when transporting equipment, reduces the use of lifting ears, shortens the lifting time, and avoids the traditional lifting and transportation scheme where the gravity of the equipment is concentrated on a few lifting points, which can easily cause deformation of the hull structure and has high risks in manual operation. This scheme disperses the gravity of the equipment through the guide rails to avoid local force deformation of the hull, while reducing the use of temporary lifting codes and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0024] Figure 1 is a schematic diagram of the roller trolley and the guide rail of the present invention;

[0025] Figure 2 It is a front schematic diagram of the roller trolley of the present invention;

[0026] Figure 3 It is a side schematic diagram of the roller trolley of the present invention;

[0027] Figure 4It is a schematic diagram of the internal structure of the roller shaft of the present invention;

[0028] Figure 5 It is a schematic diagram of the installation of large equipment into the cabin of the present invention.

[0029] Markings in the figure:

[0030] 100, roller trolley; 110, trolley housing; 111, limiting structure; 120, roller shaft; 121, oil tank; 130, roller jacket; 140, anti-slip plate; 150, nut; 160, positioning plate; 200, guide rail; 300, hoist; 400, lifting ear; 500, ear plate; 600, lifting hole. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Please also read Figures 1 to 5 Now, the large equipment cabin entry auxiliary tooling provided in an embodiment of the present invention is described.

[0036] like Figures 1 to 5As shown, the large equipment cabin entry auxiliary tooling of the present invention includes a roller trolley 100 and a guide rail 200, wherein the guide rail 200 is an I-shaped guide rail 200, and the roller trolley 100 includes a trolley shell and a roller shaft 120, wherein the roller shaft 120 is rotatably mounted on the trolley shell, and the shaft body of the roller shaft 120 is provided with a threaded oil groove 121, and a roller jacket 130 is sleeved on the roller shaft 120, and the roller jacket 130 is rollingly arranged on the upper end surface of the guide rail 200, and the side end surface of the trolley shell extends downward along the direction of the guide rail 200 to form a limiting structure 111.

[0037] The hoist 300 is also called a hand chain hoist 300, a chain hoist 300, a fall chain, etc. It is a manual lifting machinery that is simple to use and easy to carry. The lifting lug 400 is a load-bearing component installed on the equipment for lifting. The hoist 300 and the lifting lug 400 are both existing technologies and are not described in detail here.

[0038] Specifically, two guide rails 200 are laid in parallel, and several roller carts 100 are respectively set on the two guide rails 200. The equipment is placed on the roller cart 100, and the hoist 300 is pulled to slowly translate the equipment on the roller cart 100 along the laid guide rails 200. The roller cart 100 is driven to move by the friction between the equipment and the roller cart 100, and the rolling of the roller cart 100 makes the transportation of the equipment more labor-saving.

[0039] Exemplarily, a positioning plate 160 is provided on the edge of the upper end surface of the trolley shell, and the positioning plate 160 is used to position the equipment on the roller trolley 100 and block the edge of the equipment, so that when the equipment is pulled by the hoist 300, it can prevent the equipment from slipping out of the roller trolley 100.

[0040] Exemplarily, both ends of the roller shaft 120 extend to the outside of the trolley shell, one end of the roller shaft 120 is fixedly connected to an anti-slip plate 140, and the other end of the roller shaft 120 is threadedly connected to a nut 150, and the anti-slip plate 140 and the nut 150 are respectively located on the outside of the side end surface of the trolley shell, which limit the roller shaft 120 and prevent the roller shaft 120 from slipping out of the trolley shell.

[0041] Exemplarily, there are two roller shafts 120, which are arranged in parallel. The two roller shafts 120 are rotatably mounted on the trolley shell, and the trolley shell can be placed flat on the guide rail 200 through the support of the two roller shafts 120. In other embodiments, two or more roller shafts 120 can be set to increase the contact area with the guide rail 200, so as to better disperse the gravity of the equipment when transporting heavier equipment.

[0042] Exemplarily, the length of the roller cover 130 is smaller than the width between the side end surfaces of the trolley housing, ensuring that the trolley housing does not affect the rolling of the roller shaft 120 and the roller cover 130 .

[0043] Exemplarily, the roller shaft 120 and the roller jacket 130 are clearance-fitted, and the clearance value is 0.03-0.05 mm. The roller shaft 120 and the roller jacket 130 are clearance-fitted to leave space for the threaded oil groove 121, which is convenient for injecting lubricating oil to form an oil film between the roller shaft 120 and the roller jacket 130, thereby reducing the friction between the roller shaft 120 and the roller jacket 130 and making the rolling smoother.

[0044] Exemplarily, the roller shaft 120, the roller jacket 130 and the trolley shell are all made of high-strength steel. The roller shaft 120, the roller jacket 130 and the trolley shell are all subjected to the pressure of large equipment during use. The use of high-strength steel can ensure strength and is not prone to deformation due to stress.

[0045] Exemplarily, the roller jacket 130 is cut from a high-pressure seamless steel pipe, and the thickness of the roller jacket 130 is not less than 3 mm to prevent the roller jacket 130 from being broken due to stress.

[0046] Exemplarily, the roughness of the inner surface of the roller cover 130 and the outer surface of the roller shaft 120 is greater than 3.2 μm.

[0047] The present invention also provides a method for using a large-scale equipment cabin entry auxiliary tooling, which comprises the following steps:

[0048] Step 1: First, weld the ear plate 500 used for equipment translation, lifting and adjustment on the hull structure, and arrange the hoist 300;

[0049] Step 2: assemble the roller trolley 100, fill the threaded oil groove 121 of the roller shaft 120 with lubricating oil, so that an oil film is formed between the roller shaft 120 and the roller housing 130;

[0050] Step 3: according to the distance from the required installation position of the equipment to the process hole, lay the guide rail 200 of appropriate length, weld and fix the guide rail 200 to the hull structure, and place wood blocks or rubber pads at the contact point between the base and the guide rail 200 to keep the surface of the guide rail 200 level;

[0051] Step 4: Arrange an appropriate number of the roller carts 100 on the guide rail 200 according to the size of the equipment;

[0052] Step 5: Lift the device above the guide rail 200, adjust the position of the roller trolley 100, align it with the placement point on the device, and ensure that the device is placed stably;

[0053] Step 6: Hang the hoist 300 and the steel cable for the equipment translation, slowly pull the hoist 300, so that the equipment and the roller trolley 100 slowly translate along the laid guide rail 200, and after the equipment translates to the desired installation position, release the translation and dragging hoist 300 and the steel cable;

[0054] Step seven, hang the lifting ear plate 500 on the deck structure surface and the lifting ear 400 on the equipment with the hoist 300, slowly pull the hoist 300, lift the equipment out of the guide rail 200 and the roller trolley 100, and then slowly lower the equipment. During the process, use other hoists 300 to adjust the position of the equipment so that it is accurately placed on the base.

[0055] Wooden blocks or rubber sheets are placed at the contact point between the base and the guide rail 200 to keep the surface of the guide rail 200 level. Through such a leveling process, the guide rail 200 can be laid as horizontally as possible, and it is not easy to produce an inclination angle that causes the roller trolley 100 to roll automatically when placed.

[0056] Compared with the prior art, the large equipment cabin entry auxiliary tooling provided by the present invention has the following beneficial effects:

[0057] The roller shaft 120 of the present invention is rotatably mounted on the trolley housing, and a roller cover 130 is sleeved on the roller shaft 120. The roller cover 130 is rollably mounted on the upper end surface of the guide rail 200, so that the roller shaft 120 and the roller cover 130 roll on the guide rail 200 to transport the equipment. The roller structure significantly reduces friction resistance by rolling transportation, reduces manpower input when transporting equipment, and shortens the hoisting time. The shaft body of the roller shaft 120 is provided with a threaded oil groove 121, and the thread The oil groove 121 is used to inject lubricating oil to form an oil film between the roller shaft 120 and the roller jacket 130, so that the roller shaft 120 and the roller jacket 130 can roll more smoothly and the friction between the roller shaft 120 and the roller jacket 130 can be smaller. The side end surface of the trolley shell extends downward along the direction of the guide rail 200 to form a limiting structure 111. The limiting structure 111 limits the rolling trolley on the guide rail 200 to prevent derailment. The large equipment entry auxiliary tooling can put the large The large-scale cabin entry equipment is transported to the required installation position, that is, the installation base. The guide rail 200 can be laid in the cabin, and the guide rail 200 is laid from the bottom of the lifting hole 600 to the base where the equipment is installed. According to the size of the equipment to be lifted, a suitable number of roller trolleys 100 are set on the guide rail 200. The large-scale cabin entry equipment enters the cabin from the lifting hole 600, and the roller trolley 100 can carry the equipment, pull the equipment and, driven by the equipment, the roller trolley 100 can roll along the guide rail 200 to transport the equipment. The roller trolley 100 significantly reduces the friction resistance by rolling transportation on the guide rail 200, reduces manpower input when transporting equipment, reduces the use of the lifting lug 400, shortens the lifting time, and avoids the traditional lifting and transportation scheme where the gravity of the equipment is concentrated on a few lifting points, which is easy to cause deformation of the hull structure and has high risks in manual operation. The present scheme disperses the gravity of the equipment through the guide rail 200 to avoid local force deformation of the hull, while reducing the use of temporary lifting codes and improving safety.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A large equipment cabin entry auxiliary tooling, characterized in that: It includes a roller trolley and a guide rail, wherein the guide rail is an I-shaped guide rail, and the roller trolley includes a trolley shell and a roller shaft, wherein the roller shaft is rotatably mounted on the trolley shell, the shaft body of the roller shaft is provided with a threaded oil groove, a roller sleeve is sleeved on the roller shaft, and the roller sleeve is rotatably arranged on the upper end surface of the guide rail, and the side end surface of the trolley shell extends downward along the direction of the guide rail to form a limiting structure.

2. The large equipment cabin entry auxiliary tooling according to claim 1 is characterized in that: A positioning plate is arranged on the edge of the upper end surface of the trolley shell.

3. The large equipment cabin entry auxiliary tooling according to claim 2 is characterized in that: Both ends of the roller shaft extend to the outside of the trolley housing, one end of the roller shaft is fixedly connected with an anti-slip plate, and the other end of the roller shaft is threadedly connected with a nut.

4. The large equipment cabin entry auxiliary tooling according to claim 3 is characterized in that: There are two roller shafts, which are arranged in parallel and are rotatably mounted on the trolley housing.

5. The large equipment cabin entry auxiliary tooling according to claim 4 is characterized in that: The length of the roller outer shell is smaller than the width between the side end surfaces of the trolley housing.

6. The large equipment cabin entry auxiliary tooling according to claim 1 is characterized in that: The roller shaft and the roller sleeve are clearance matched, and the clearance value is 0.03-0.05mm.

7. The large equipment cabin entry auxiliary tooling according to claim 1 is characterized in that: The materials of the roller shaft, the roller housing and the trolley housing are all high-strength steel.

8. The large equipment cabin entry auxiliary tooling according to claim 1 is characterized in that: The roller outer shell is cut from a high-pressure seamless steel pipe, and the thickness of the roller outer shell is not less than 3 mm.

9. A method for using a large equipment cabin entry auxiliary tooling, using the large equipment cabin entry auxiliary tooling as described in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: First, weld the ear plates used for equipment translation, lifting and adjustment on the hull structure, and arrange the hoist; Step 2: assemble the roller trolley, fill the threaded oil groove of the roller shaft with lubricating oil, so that an oil film is formed between the roller shaft and the roller jacket; Step 3: according to the distance from the required installation position of the equipment to the process hole, lay the guide rail of appropriate length, weld and fix the guide rail to the hull structure, and place wood blocks or rubber pads at the contact point between the base and the guide rail to keep the surface of the guide rail level; Step 4, arranging an appropriate number of the roller trolleys on the guide rail according to the size of the equipment; Step 5: Lift the equipment above the guide rail, adjust the position of the roller trolley to align it with the placement point on the equipment, and ensure that the equipment is placed stably; Step 6: Hang the hoist and steel cable for the translation of the equipment, slowly pull the hoist, so that the equipment and the roller trolley slowly translate along the laid guide rail, and after the equipment translates to the required installation position, release the translation drag hoist and steel cable; Step seven, hang the lifting ear plate on the deck structure surface and the lifting ear on the equipment with a hoist, slowly pull the hoist, lift the equipment out of the guide rail and the roller trolley, and then slowly lower the equipment. During the process, use other hoists to adjust the position of the equipment so that it is accurately placed on the base.

Images