Detachable inner crawling ladder for PPH storage tank

Abstract

The utility model relates to the technical field of inner crawling ladders, in particular to a detachable inner crawling ladder of a PPH storage tank, which comprises a tank body, two groups of ladder assemblies are clamped on the inner wall of the tank body through a plurality of groups of mounting mechanisms, a plurality of groups of ladder plates are arranged and mounted between the two groups of ladder assemblies, and a first cambered surface is arranged on one side of each ladder assembly. The first cambered surface is attached to the radian of the inner wall of the tank body, the mounting mechanism comprises a clamping assembly, an elastic pressing assembly and a drawing assembly, the clamping assembly is used for preliminarily butting the ladder assembly and the tank body, the elastic pressing assembly is used for locking the positions of the ladder assembly and the tank body, and the drawing assembly is used for unlocking the ladder assembly and the tank body. The clamping assembly comprises a plurality of groups of butt joint grooves formed in one side of the ladder frame; the device is simple in structure and convenient to operate, a worker can complete dismounting and mounting operation of the part by pressing and pulling, the bolt and the nut do not need to be rotated circle by circle, the labor amount of the worker is reduced, and the dismounting and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal ladders, in particular to a detachable internal ladder for a PPH storage tank. Background Art

[0002] PPH tanks are widely used in our lives. They can be used in pharmaceutical factories, pesticide factories and other chemical enterprises, petroleum, food industry, vegetable oil, paper mills, steel industry, ecological environment protection, industry and other processing and manufacturing industries as raw material storage in the production and processing process. PPH tanks are made of high-density polypropylene material, which has excellent chemical resistance, high temperature resistance and good creep resistance. In the process of tank maintenance, it is inevitable to enter the tank to work, which requires the use of ladders. The existing ladders are mostly made of stainless steel. Although the strength of stainless steel is good, the force is often concentrated on the connection between the top and bottom of the tank body during installation. The connection is prone to accumulate and produce great stress. Long-term use is easy to cause this part to be subjected to long-term stress and crack, affecting its service life.

[0003] In order to solve the above technical problems, a Chinese patent with announcement number CN218173368U in the prior art discloses a detachable internal ladder for a PPH tank, comprising a tank body and an internal ladder, wherein a manhole cover is provided on the top of the tank body, an internal ladder is provided on the inner wall of the tank body, the internal ladder comprises a cross bar, a longitudinal bar, a screw rod, and an arc guardrail, the screw rod portion is pre-embedded equidistantly along the vertical direction of the inner wall of the tank, the longitudinal bar has screw holes equidistantly provided at the pre-embedded length between two screw rods, a clamp is buckled with one in the middle of the two screw holes on the longitudinal bar, two clamps are buckled with two ends of the cross bar, and the longitudinal bar passes through the pre-embedded screw rod and is fixed by a limit nut and a fastening nut.

[0004] Although the above-mentioned prior art solution utilizes embedded screws to install and disassemble the inner ladder and evenly distributes the force of the inner ladder to the tank wall, it requires workers to rotate multiple groups of bolts one by one in circles during disassembly and maintenance, which is cumbersome and increases the workload of the workers, affecting the efficiency of disassembly and maintenance. Utility Model Content

[0005] The utility model aims to provide a detachable inner ladder for a PPH storage tank to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A detachable internal ladder for a PPH storage tank comprises a tank body, wherein the inner wall of the tank body is clamped with two groups of ladder frames through multiple groups of mounting mechanisms, multiple groups of ladder plates are arranged and installed between the two groups of ladder frames, a first curved surface is provided on one side of the ladder frame, and the first curved surface fits the curvature of the inner wall of the tank body, the mounting mechanism comprises a clamping assembly, a spring-pressing assembly and a pulling assembly, the clamping assembly is used for preliminarily docking the ladder frame and the tank body, the spring-pressing assembly is used for locking the position of the ladder frame and the tank body, and the pulling assembly is used for releasing the lock between the ladder frame and the tank body.

[0008] As a preferred solution of the utility model, the snap-on assembly includes multiple groups of docking grooves opened on one side of the ladder frame, and multiple groups of docking blocks slidably connected to the docking grooves are arranged and installed on the inner wall of the tank body. An installation groove is opened on one side of the interior of the ladder frame, and the docking groove is connected to the inner side of the installation groove.

[0009] As a preferred solution of the utility model, the spring-pressing assembly includes connecting plates installed at both ends of the inner wall of the installation groove, a limiting groove is provided inside the connecting plate, the inner side of the limiting groove is slidably connected to the limiting plate, a first spring is installed between one side of the limiting plate and the inner wall of the limiting groove, an extrusion block is installed at one end of the limiting plate, a first inclined surface is provided on one side of the extrusion block, and second inclined surfaces that fit the first inclined surface are provided on both sides of the docking block.

[0010] As a preferred solution of the utility model, the opposing surfaces of the two groups of extrusion blocks are provided with first grooves slidably connected to the two ends of the docking blocks, the two sides of the docking blocks are provided with second grooves slidably connected to the protruding ends of the two groups of extrusion blocks, one side of the extrusion block is located at a fixed groove below the first groove, and a second spring is installed between the two groups of fixed grooves.

[0011] As a preferred solution of the utility model, the pull-out assembly includes a pull-out column installed at the other end of the limiting plate, the other end of the pull-out column is rotatably connected to a pull ring, and positioning columns are installed on both sides of the inner wall of the installation groove, and the cross-section of the positioning column is L-shaped.

[0012] As a preferred solution of the utility model, a sliding groove is provided on one side of the ladder frame, a sliding plate is slidably connected to the inner side of the sliding groove, the sliding groove is communicated with the inner side of the mounting groove, a synchronization groove is provided on one side of the inner wall of the sliding groove, a synchronization block is slidably connected to the inner side of the synchronization groove, and one end of the synchronization block is fixedly connected to one end of the sliding plate.

[0013] As a preferred solution of the utility model, a magnetic block is embedded and installed at one end of the sliding plate, an iron block adsorbed by the magnetic block is embedded and installed on the inner wall of the sliding groove, and a buckle groove is opened on one side of the sliding plate.

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

[0015] The utility model discloses that the ladder frame and the tank body are preliminarily docked by a clamping assembly, the spring pressure assembly locks the positions of the ladder frame and the tank body, and the pull-out assembly releases the lock between the ladder frame and the tank body. The utility model has a simple structure and is easy to operate. The staff can complete the disassembly and assembly operation of this part by pressing and pulling, and there is no need to rotate the bolts and nuts one by one, which reduces the workload of the staff and improves the efficiency of disassembly and assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional structural schematic diagram of the ladder frame of the utility model;

[0018] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A.

[0019] In the figure: 1, tank body; 2, ladder frame; 3, docking block; 4, connecting plate; 5, limit plate; 6, first spring; 7, extrusion block; 8, first inclined surface; 9, second inclined surface; 10, first groove; 11, second spring; 12, pull-out column; 13, pull ring; 14, positioning column; 15, sliding plate; 16, synchronization block; 17, magnetic block; 18, ladder plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0021] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0022] The utility model discloses a detachable inner ladder of a PPH storage tank, comprising a tank body 1, wherein the inner wall of the tank body 1 is clamped with two groups of ladder frames 2 through multiple groups of mounting mechanisms, multiple groups of ladder plates 18 are arranged and mounted between the two groups of ladder frames 2, a first arc surface is provided on one side of the ladder frame 2, and the first arc surface fits the arc of the inner wall of the tank body 1 with each other, and the mounting mechanism comprises a clamping assembly, a spring-pressing assembly and a pulling assembly, wherein the clamping assembly is used for preliminarily docking the ladder frame 2 with the tank body 1, the spring-pressing assembly is used for locking the position of the ladder frame 2 with the tank body 1, and the pulling assembly is used for unlocking the lock between the ladder frame 2 and the tank body 1. The ladder can be preliminarily docked with the tank body 1 through the clamping assembly when in use, the spring-pressing assembly locks the position of the ladder frame 2 with the tank body 1, and the pulling assembly unlocks the lock between the ladder frame 2 and the tank body 1, and the ladder has a simple structure and is easy to operate. The staff can complete the disassembly and assembly operation of this part by pressing and pulling, and there is no need to rotate the bolts and nuts one by one, thereby reducing the workload of the staff and improving the efficiency of disassembly and assembly and maintenance.

[0023] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the clamping assembly includes multiple groups of docking grooves opened on one side of the ladder frame 2, and multiple groups of docking blocks 3 slidably connected to the docking grooves are arranged and installed on the inner wall of the tank body 1. An installation groove is opened on one side of the inside of the ladder frame 2, and the docking groove is connected to the inner side of the installation groove. First, after the ladder frame 2 and the ladder plate 18 are combined, the first arc surfaces of the two groups of ladder frames 2 are attached to the inner wall of the tank body 1, so that part of the docking block 3 can enter the inner side of the docking groove for preliminary docking.

[0024] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the spring pressure assembly includes a connecting plate 4 installed at both ends of the inner wall of the installation groove, a limiting groove is provided inside the connecting plate 4, and the limiting groove is slidably connected to the limiting plate 5 on the inner side, a first spring 6 is installed between one side of the limiting plate 5 and the inner wall of the limiting groove, an extrusion block 7 is installed at one end of the limiting plate 5, a first inclined surface 8 is provided on one side of the extrusion block 7, and second inclined surfaces 9 that fit with the first inclined surface 8 are provided on both sides of the docking block 3, and first grooves 10 that are slidably connected to the two ends of the docking block 3 are provided on the opposite surfaces of the two groups of extrusion blocks 7, and the two sides of the docking block 3 are provided with sliding grooves that are slidably connected to the protruding ends of the two groups of extrusion blocks 7. The second groove of the dynamic connection, one side of the extrusion block 7 is located at the fixed groove below the first groove 10, and a second spring 11 is installed between the two sets of fixed grooves. Then, continue to push the ladder frame 2 to allow the docking block 3 to continue to enter the inner side of the installation groove, and the second inclined surface 9 on its surface contacts the first inclined surface 8 on the extrusion block 7, forcing the extrusion block 7 to move the second spring 11 to be stretched, and the limit plate 5 also moves accordingly to squeeze the first spring 6 to retract. After the docking block 3 completely enters the docking groove, the extrusion block 7 rebounds to cooperate with the first groove 10 and the second groove to allow it to engage with the docking block 3 and position each other to complete the assembly.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the pulling assembly includes a pulling column 12 installed at the other end of the limit plate 5, and the other end of the pulling column 12 is rotatably connected to a pull ring 13. Positioning columns 14 are installed on both sides of the inner wall of the installation groove. The cross-section of the positioning column 14 is L-shaped. Further, the pull ring 13 is held and dragged, and the pulling column 12 is cooperated to drive the limit plate 5 and the extrusion block 7 to move actively, and the first spring 6 and the second spring 11 move accordingly. After the position of the docking block 3 is no longer clamped, the pull ring 13 can be deflected and hung obliquely on the positioning column 14 for temporary positioning. At this time, the ladder frame 2 can be removed.

[0026] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, a sliding groove is provided on one side of the ladder frame 2, and a sliding plate 15 is slidably connected to the inner side of the sliding groove, and the sliding groove is communicated with the inner side of the mounting groove, and a synchronization groove is provided on one side of the inner wall of the sliding groove, and a synchronization block 16 is slidably connected to the inner side of the synchronization groove, one end of the synchronization block 16 is fixedly connected to one end of the sliding plate 15, a magnetic block 17 is embedded and installed at one end of the sliding plate 15, and an iron block adsorbed by the magnetic block 17 is embedded and installed on the inner wall of the sliding groove, and a buckle groove is provided on one side of the sliding plate 15. Furthermore, buckling the buckle groove can cooperate with the synchronization groove and the synchronization block 16 to drive the sliding plate 15 to slide on the inner side of the sliding groove until the magnetic block 17 is adsorbed by the iron block to cover the pull ring 13 to prevent people from touching it by mistake.

[0027] The implementation principle of a detachable inner ladder for a PPH tank in the embodiment of the present application is as follows: after the ladder frame 2 and the ladder plate 18 are combined, the first arc surfaces of the two sets of ladder frames 2 are fitted to the inner wall of the tank body 1, so that part of the docking block 3 can enter the inner side of the docking groove to perform preliminary docking, and the ladder frame 2 is continuously pushed to allow the docking block 3 to continue to enter the inner side of the installation groove, and the second inclined surface 9 on its surface contacts the first inclined surface 8 on the extrusion block 7, forcing the extrusion block 7 to move the second spring 11 to be stretched, and the limit plate 5 also moves accordingly to squeeze the first spring 6 to retract, and after the docking block 3 completely enters the docking groove, the extrusion block 7 rebounds. Cooperate with the first groove 10 and the second groove to make it engage with the docking block 3 and position it to complete the assembly, buckle the pull ring 13 to drag it, cooperate with the pulling column 12 to drive the limit plate 5 and the extrusion block 7 to move actively, and the first spring 6 and the second spring 11 move accordingly. After the position of the docking block 3 is no longer clamped, the pull ring 13 can be deflected and hung obliquely on the positioning column 14 for temporary positioning. At this time, the ladder frame 2 can be removed, and the buckle pull groove can cooperate with the synchronous groove and the synchronous block 16 to drive the sliding plate 15 to slide on the inside of the sliding groove until the magnetic block 17 and the iron block are adsorbed to cover the pull ring 13 to prevent people from touching it by mistake.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable internal ladder for a PPH storage tank, comprising a tank body (1), characterized in that: The inner wall of the tank body (1) is clamped with two groups of ladder frames (2) through multiple groups of mounting mechanisms, and multiple groups of ladder plates (18) are arranged and mounted between the two groups of ladder frames (2). A first curved surface is provided on one side of the ladder frame (2), and the first curved surface fits the curvature of the inner wall of the tank body (1). The mounting mechanism comprises a clamping assembly, a spring-pressing assembly and a pull-out assembly. The clamping assembly is used for preliminarily docking the ladder frame (2) and the tank body (1), the spring-pressing assembly is used for locking the position of the ladder frame (2) and the tank body (1), and the pull-out assembly is used for unlocking the lock between the ladder frame (2) and the tank body (1).

2. A detachable internal ladder for a PPH storage tank according to claim 1, characterized in that: The clamping assembly comprises a plurality of docking grooves formed on one side of the ladder frame (2); a plurality of docking blocks (3) slidably connected to the docking grooves are arranged and installed on the inner wall of the tank body (1); a mounting groove is formed on one side of the interior of the ladder frame (2); and the docking groove is connected to the inner side of the mounting groove.

3. A detachable internal ladder for a PPH storage tank according to claim 2, characterized in that: The spring-pressing assembly comprises a connecting plate (4) mounted at both ends of the inner wall of the mounting groove, a limiting groove is provided inside the connecting plate (4), a limiting plate (5) is slidably connected to the inner side of the limiting groove, a first spring (6) is installed between one side of the limiting plate (5) and the inner wall of the limiting groove, an extrusion block (7) is installed at one end of the limiting plate (5), a first inclined surface (8) is provided on one side of the extrusion block (7), and second inclined surfaces (9) that are in contact with the first inclined surface (8) are provided on both sides of the docking block (3).

4. A detachable internal ladder for a PPH storage tank according to claim 3, characterized in that: The opposing surfaces of the two groups of extrusion blocks (7) are provided with first grooves (10) slidably connected to the two ends of the docking block (3), the two sides of the docking block (3) are provided with second grooves slidably connected to the protruding ends of the two groups of extrusion blocks (7), one side of the extrusion block (7) is provided with a fixed groove below the first groove (10), and a second spring (11) is installed between the two groups of the fixed grooves.

5. A detachable internal ladder for a PPH storage tank according to claim 4, characterized in that: The pull-out assembly comprises a pull-out column (12) mounted on the other end of the limit plate (5); the other end of the pull-out column (12) is rotatably connected to a pull ring (13); positioning columns (14) are mounted on both sides of the inner wall of the mounting groove; the cross section of the positioning column (14) is L-shaped.

6. A detachable internal ladder for a PPH storage tank according to claim 5, characterized in that: A sliding groove is provided on one side of the ladder frame (2), a sliding plate (15) is slidably connected to the inner side of the sliding groove, the sliding groove is communicated with the inner side of the mounting groove, a synchronization groove is provided on one side of the inner wall of the sliding groove, a synchronization block (16) is slidably connected to the inner side of the synchronization groove, and one end of the synchronization block (16) is fixedly connected to one end of the sliding plate (15).

7. A detachable internal ladder for a PPH storage tank according to claim 6, characterized in that: A magnetic block (17) is embedded and installed at one end of the sliding plate (15), an iron block adsorbed by the magnetic block (17) is embedded and installed on the inner wall of the sliding groove, and a buckling groove is opened on one side of the sliding plate (15).

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