A manhole opening device and its usage method

Abstract

This invention discloses a manhole opening device and its usage method. The device includes a length-extendable opening frame, sliding components slidably disposed on both sides of the opening frame, and a length-extendable sleeve assembly rotatably disposed on the sliding components. By adjusting the inner frame length of the opening frame to be equal to the diameter of the arc segment of the manhole, and then moving the sliding components to the center of the sliding groove of the opening frame, the scribing radius can be quickly adjusted, enabling the rapid drawing of the semi-circular arc segment of the manhole. Furthermore, the inner frame along the width direction of the opening frame can be used to draw a straight line segment of the manhole, thereby completing the drawing of the manhole outline. This improves the efficiency of manhole opening, reduces potential errors caused by human construction, and lays the foundation for subsequent opening of holes in segmented structures.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a manhole opening device and its usage method. Background Technology

[0002] As is well known, ships have numerous manholes. Including manholes in the hull structure, while ensuring structural strength, not only reduces the ship's weight but also facilitates worker access within the vessel. Currently, although many manholes are created during the cutting phase, many still require manual marking and drilling during sectional construction. This traditional method is inefficient, requiring workers to measure dimensions step-by-step on the steel plate, draw the manhole outline, and then drill the hole. Summary of the Invention

[0003] In view of this, the present invention provides a manhole opening device and its usage method. The manhole opening device can adapt to manhole openings of various sizes on the ship hull structure and can quickly complete the drawing of the manhole outline, thereby improving the efficiency of manhole opening.

[0004] A manhole opening device includes a telescopic opening frame, sliding components slidably disposed on both sides of the opening frame, and a telescopic sleeve assembly rotatably disposed on the sliding components.

[0005] The perforated frame has a sliding groove along its length, and a scale line is provided on the frame body on one side of the sliding groove. The sliding assembly includes a sliding member and a locking member. The sliding member includes a first frustum, a second frustum extending from the outer circumference of the first frustum, and a first slider extending downward from the bottom center of the first frustum. A rotating groove is formed between the first frustum and the second frustum. One end of the sleeve assembly is embedded in the rotating groove and can rotate within the rotating groove. The first slider extends into the sliding groove and is threadedly connected to the locking member that is locked in the sliding groove.

[0006] The top of the first truncated cone is also symmetrically provided with ear plates.

[0007] The perforated frame includes a lower frame and an upper frame that is snapped onto the lower frame. The lower frame has first sliding grooves on both sides, and the upper frame has a second sliding groove that is aligned with the first sliding grooves. The scale line is set along the length of the lower frame and is located on one side of the first sliding groove.

[0008] The bottom of the upper frame is provided with a slot for locking it onto the lower frame.

[0009] The sleeve assembly includes a first sleeve and a second sleeve fitted inside the first sleeve. The end of the first sleeve extends into a ring, and the bottom of the ring extends downward into a rotating block. The rotating block is engaged in a rotating groove, and the outer diameter of the rotating block is smaller than the outer diameter of the ring. The end of the second sleeve is provided with a scribing ring for inserting a scribing tool.

[0010] The inner diameter of the rotating block is the same as the inner diameter of the ring, and both are equal to the outer diameter of the first frustum.

[0011] The locking component includes a second slider and a screw vertically disposed on the second slider, with the second slider being movably engaged in the sliding groove.

[0012] A method for using a manhole opening device includes the following steps:

[0013] S1, Place the manhole opening device at the opening location on the hull structure;

[0014] S2, pull the upper and lower frames of the opening frame apart so that the length of the inner frame is equal to the diameter of the arc segment of the manhole;

[0015] S3, move the two sliding components to the center of the opening frame and rotate their respective sliders to tighten the sliders with the locking parts, thereby fixing the two sliding components in the current position;

[0016] S4, insert the two scribing tools into the scribing rings of the two sleeve assemblies respectively, and rotate the two sleeve assemblies so that the scribing tools at their ends are respectively aligned with one end of the first sliding groove. At this time, the length of the two sleeve assemblies is equal to the radius of the manhole arc segment.

[0017] S5, rotate the two sleeve rod assemblies, use the two scribing tools to draw two semi-circular arcs on the hull structure, and then draw two straight lines along the inner frame along the width direction of the opening frame to form the outline of the manhole.

[0018] S6, cut the manhole into the hull structure along the outline of the manhole.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention adjusts the inner frame length of the opening frame to be equal to the diameter of the arc segment of the manhole, and then moves the sliding component to the center of the sliding groove of the opening frame. This allows for quick adjustment of the scribing radius, enabling the rapid drawing of the semi-circular arc segment of the manhole. The inner frame along the width direction of the opening frame can then be used to draw the straight line segment of the manhole, thereby completing the drawing of the manhole outline. This improves the efficiency of manhole opening, reduces potential errors caused by human construction, and lays the foundation for subsequent opening of holes in segmented structures.

[0021] 2. The manhole opening device of the present invention can adapt to manhole openings of various sizes on the ship structure. It can mark and open two commonly used manholes on ship structures, namely 400mm*600mm and 600mm*800mm, which improves the versatility of the opening device, reduces the production and construction costs of enterprises, and also improves the efficiency of ship construction. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the manhole opening device.

[0024] Figure 2 This is a structural diagram of the upper frame.

[0025] Figure 3 This is a schematic diagram of the sliding component.

[0026] Figure 4 This is a structural diagram of the locking component.

[0027] Figure 5 This is a structural schematic diagram of the sleeve assembly.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1 is the perforated frame, 11 is the lower frame, 12 is the upper frame, 13 is the first sliding groove, 14 is the second sliding groove, and 15 is the slot.

[0030] 2 is a sliding assembly, 21 is a slider, 211 is a first frustum, 212 is a first slider, 213 is a second frustum, 214 is a rotating groove, 215 is an ear plate, 22 is a locking element, 221 is a second slider, and 222 is a screw.

[0031] 3 is the sleeve assembly, 31 is the first sleeve, 32 is the second sleeve, 33 is the ring, 34 is the rotating block, and 35 is the scribing ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0033] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0035] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0036] The present invention provides a manhole opening device, comprising an opening frame 1 with extendable length, a sliding component 2 slidably disposed on both sides of the opening frame 1, and an extensionable sleeve component 3 rotatably disposed on the sliding component 2.

[0037] The perforated frame 1 includes a lower frame 11 and an upper frame 12 that is snapped onto the lower frame 11. A first sliding groove 13 is formed on each side of the lower frame 11 along its length. A second sliding groove 14, aligned with the first sliding groove 13, is formed on the upper frame 12. A scale line is provided on the lower frame 11 frame on the side of the first sliding groove 13, and the scale line is set along the length of the lower frame 11.

[0038] The bottom of the upper frame 12 is provided with a slot 15 for locking it onto the lower frame 11. By pulling the upper frame 12 apart and allowing the upper frame 12 and the lower frame 11 to slide relative to each other, the length of the entire perforated frame 1 can be adjusted.

[0039] In this embodiment, both the upper frame 12 and the lower frame 11 are "U"-shaped frames, and the two U-shaped frames are opposite each other and locked together as one.

[0040] The sliding assembly 2 is slidably disposed within the sliding groove of the perforated frame 1 and can slide along the sliding groove. The sliding assembly 2 includes a sliding member 21 and a locking member 22. The sliding member 21 includes a first frustum 211, a second frustum 213 extending from the outer circumference of the first frustum 211, and a first slider 212 extending downward from the bottom center of the first frustum 211. A rotating groove 214 is formed between the first frustum 211 and the second frustum 213. One end of the sleeve assembly 3 is embedded in the rotating groove 214 and can rotate within the rotating groove 214. The first slider 212 has a threaded hole that extends vertically upward from the bottom of the first slider 212 to the top of the first frustum 211. The first slider 212 extends into the second sliding groove 14 and is threadedly connected to the locking member 22, which is engaged in the first sliding groove 13.

[0041] The locking member 22 includes a second slider 221 and a screw 222 vertically disposed on the second slider 221. The second slider 221 is movably engaged in the first sliding groove 13, and the screw 222 passes vertically upward through the first sliding groove 13 and is threadedly connected to the first slider 212 engaged in the second sliding groove 14.

[0042] In this embodiment, the first frustum 211 is cylindrical and the longitudinal section of the second frustum 213 is U-shaped, thereby forming an annular rotating groove 214 between the second frustum 213 and the first frustum 211. One end of the sleeve assembly 3 is embedded in the rotating groove 214 and can rotate within the rotating groove 214.

[0043] In a preferred embodiment, the top of the first frustum 211 is also symmetrically provided with ear plates 215 for rotating the slider 21 so that the slider 21 is threadedly fixed to the locking member 22, thereby locking the position of the entire sliding assembly 2.

[0044] When the sliding component 2 slides along the sliding groove of the opening frame 1 to the target position, grasp the ear plate 215 and twist the sliding member 21 to make the sliding member 21 and the locking member 22 threadedly fixed until the bottom of the second truncated cone 213 of the sliding member 21 presses against the upper frame 12 of the opening frame 1, thus locking the sliding component 2 to the current position. At the same time, since the sliding member 21 presses down on the opening frame 1, the length of the opening frame 1 can also be locked.

[0045] Since one end of the sleeve assembly 3 is stuck in the rotating groove 214 of the sliding assembly 2, the sliding assembly 2 will move synchronously with the sleeve assembly 3 when it slides along the sliding groove of the opening frame 1.

[0046] The sleeve assembly 3 includes a first sleeve 31 and a second sleeve 32 sleeved within the first sleeve 31. A ring 33 extends from the end of the first sleeve 31, and a rotating block 34 extends downward from the bottom of the ring 33. The rotating block 34 is engaged in a rotating groove 214. The outer diameter of the rotating block 34 is smaller than the outer diameter of the ring 33, and the inner diameter of the rotating block 34 is the same as the inner diameter of the ring 33, both equal to the outer diameter of the first frustum 211. A scribing ring 35 for inserting a scribing tool is provided at the end of the second sleeve 32.

[0047] Since the rotating block 34 of the sleeve assembly 3 is engaged in the rotating groove 214 of the sliding assembly 2, rotating the sleeve assembly 3 allows the scribing tool inserted at its end to draw an arc. By pulling the second sleeve 32, the length of the sleeve assembly 3 can be adjusted, thereby adjusting the radius of the arc it draws.

[0048] The present invention also provides a method for using a manhole opening device, which specifically includes the following steps:

[0049] S1, Place the manhole opening device at the opening location on the hull structure;

[0050] S2, pull the upper and lower frames of the opening frame 1 apart so that the length of the inner frame is equal to the diameter of the arc segment of the manhole;

[0051] S3, move the left and right sliding components 2 to the center of the opening frame 1 respectively and rotate their respective sliding parts 21 to tighten their respective sliding parts 21 with the locking parts 22, thereby fixing the two sliding components 2 in the current position;

[0052] S4, insert the two scribing tools into the scribing rings 35 of the two sleeve assemblies 3 respectively, and rotate the two sleeve assemblies 3 so that the scribing tools at their ends are respectively aligned with one end of the first sliding groove 13. At this time, the length of the two sleeve assemblies 3 is equal to the radius of the manhole arc segment.

[0053] S5, rotate the two sleeve rod assemblies 3. During the rotation of the sleeve rod assembly 3, the scribing tool at its end draws a semi-circular arc on the hull structure, and then draws two straight lines along the inner frame of the opening frame 1 in the width direction to form the manhole outline.

[0054] S6, cut the manhole into the hull structure along the outline of the manhole.

[0055] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A manhole opening device, characterized in that, It includes a length-extendable opening frame (1), sliding components (2) slidably disposed on both sides of the opening frame (1), and a length-extendable sleeve assembly (3) rotatably disposed on the sliding components (2). The opening frame (1) is provided with a sliding groove along its length. The frame of the opening frame (1) on one side of the sliding groove is provided with a scale line. The sliding assembly (2) includes a sliding member (21) and a locking member (22). The sliding member (21) includes a first frustum (211), a second frustum (213) extending from the outer circumference of the first frustum (211), and a first slider (212) extending downward from the bottom center of the first frustum (211). A rotating groove (214) is formed between the first frustum (211) and the second frustum (213). One end of the sleeve assembly (3) is embedded in the rotating groove (214) and can rotate in the rotating groove (214). The first slider (212) extends into the sliding groove and is threadedly connected to the locking member (22) which is locked in the sliding groove.

2. The manhole opening device according to claim 1, characterized in that, The top of the first frustum (211) is also symmetrically provided with ear plates (215).

3. The manhole opening device according to claim 1, characterized in that, The perforated frame (1) includes a lower frame (11) and an upper frame (12) that is snapped onto the lower frame (11). The lower frame (11) has a first sliding groove (13) on both sides, and the upper frame (12) has a second sliding groove (14) that is aligned with the first sliding groove (13). The scale line is set along the length of the lower frame (11) and is located on one side of the first sliding groove (13).

4. The manhole opening device according to claim 3, characterized in that, The bottom of the upper frame (12) is provided with a slot (15) for locking it onto the lower frame (11).

5. The manhole opening device according to claim 1, characterized in that, The sleeve assembly (3) includes a first sleeve (31) and a second sleeve (32) sleeved inside the first sleeve (31). A ring (33) extends from the end of the first sleeve (31), and a rotating block (34) extends downward from the bottom of the ring (33). The rotating block (34) is locked in the rotating groove (214). The outer diameter of the rotating block (34) is smaller than the outer diameter of the ring (33). The end of the second sleeve (32) is provided with a scribing ring (35) for inserting a scribing tool.

6. The manhole opening device according to claim 5, characterized in that, The inner diameter of the rotating block (34) is the same as the inner diameter of the ring (33), and both are equal to the outer diameter of the first frustum (211).

7. The manhole opening device according to claim 1, characterized in that, The locking member (22) includes a second slider (221) and a screw (222) vertically disposed on the second slider (221). The second slider (221) is movably locked in the sliding groove.

8. A method of using a manhole opening device according to any one of claims 1-7, characterized in that, Specifically, the following steps are included: S1, Place the manhole opening device at the opening location on the hull structure; S2, pull the upper and lower frames of the opening frame (1) apart so that the length of the inner frame is equal to the diameter of the arc segment of the manhole; S3, move the two sliding components (2) to the center of the opening frame (1) and rotate their respective sliding parts (21) to tighten their respective sliding parts (21) with the locking parts (22), thereby fixing the two sliding components (2) in the current position; S4, insert the two scribing tools into the scribing rings (35) of the two sleeve assemblies (3) respectively, rotate the two sleeve assemblies (3) so that the scribing tools at their ends are aligned with one end of the first sliding groove (13) respectively. At this time, the length of the two sleeve assemblies (3) is equal to the radius of the manhole arc segment. S5, rotate the two sleeve rod assemblies (3), use the two scribing tools to draw two semi-circular arcs on the hull structure, and then draw two straight lines along the inner frame of the opening frame (1) in the width direction to form the manhole outline; S6, cut the manhole into the hull structure along the outline of the manhole.

Images