Shovel for pipeline excavation, paying-off and grooving

Abstract

The utility model discloses a spade for pipeline excavation, paying off and grooving, and belongs to the technical field of manual tools. A spade for pipeline excavation, paying off and grooving comprises a spade head and a main spade handle connected with the spade head, an auxiliary spade handle is arranged at the end, away from the spade head, of the main spade handle in the axial direction in a telescopic mode, a limiting mechanism is arranged on the main spade handle, and the limiting mechanism comprises a limiting groove and a first elastic piece. The multiple limiting grooves are formed in the surface of the auxiliary shovel handle in the axial direction, the first elastic piece is fixedly connected with the main shovel handle, and first limiting blocks corresponding to the limiting grooves are arranged on the inner wall of the first elastic piece; the shovel has the advantages that the total length of the main shovel handle and the auxiliary shovel handle is convenient to adjust, and the shovel is suitable for users with different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, in particular to a shovel used for pipeline excavation, laying out and grooving. Background Art

[0002] In the process of pipeline excavation, laying out and grooving, a shovel is one of the commonly used manual tools. The existing shovel selection should be based on different project needs, the height and strength of the user, and then choose a shovel length that suits the user, so that the grooving and laying out work can be completed more efficiently and labor-savingly. However, in actual operations, it is difficult for procurement personnel to buy a shovel that suits personal and project needs on the market. Operators use shovels that are not suitable for their height for a long time, which easily adds difficulties to the construction and increases labor costs and time costs. Utility Model Content

[0003] The utility model aims to solve the problem that the shovel in the prior art cannot adjust the length of the shovel handle to adapt to different heights of users, and proposes a shovel for pipeline excavation, laying out and grooving.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A shovel for pipeline excavation, laying out and grooving, comprises a shovel head and a main shovel handle connected to the shovel head, an auxiliary shovel handle is axially retractable at one end of the main shovel handle away from the shovel head, a limiting mechanism is provided on the main shovel handle, the limiting mechanism comprises a limiting groove and a first spring sheet, a plurality of the limiting grooves are axially arranged on the surface of the auxiliary shovel handle, the first spring sheet is fixedly connected to the main shovel handle, and a first limiting block corresponding to the limiting groove is provided on the inner wall of the first spring sheet.

[0006] Furthermore, the limiting mechanism also includes a first outer tube and a first inner tube. The first inner tube is sleeved on the outside of the auxiliary shovel handle. The first inner tube is coaxial and fixedly connected to the main shovel handle. The first spring piece is arranged on the first inner tube. The outside of the first inner tube is coaxially and detachably sleeved with a first outer tube for constraining the first spring piece.

[0007] Furthermore, a U-shaped first slit is provided at the bottom of the inner wall of the first inner tube, a first elastic sheet is formed inside the first slit, and a top of the first elastic sheet is connected to the first inner tube.

[0008] Furthermore, a first thread groove is arranged on the outer wall of the first inner tube, the first thread groove passes through the surface of the first elastic sheet, and a first thread corresponding to the first elastic sheet is arranged on the inner wall of the first outer tube.

[0009] Furthermore, an adjustable soft pad with a self-locking function is axially slidably provided on the auxiliary shovel handle.

[0010] Furthermore, the adjustable cushion includes a cushion cover, a second inner tube, a second spring sheet, and a second limit block. The cushion cover is fixedly connected to the second inner tube, the second inner tube is axially slidably mounted on the auxiliary shovel handle, the second inner tube is provided with a second spring sheet, and the second spring sheet is provided with a second limit block corresponding to the limit groove.

[0011] Furthermore, one end of the second inner tube is connected to a screw tube sleeved on the auxiliary shovel handle, the second elastic piece is arranged on the screw tube, and the second outer tube is sleeved on the outside of the screw tube.

[0012] Furthermore, the second spring piece is embedded in the side wall of the screw tube, the right end of the second spring piece is connected to the screw tube, the upper and lower sides and the left end of the second spring piece are provided with second slits, and the second slits penetrate the side wall of the screw tube.

[0013] Furthermore, a second thread groove is provided on the outer wall of the threaded tube, and a second thread corresponding to the second thread groove is provided on the inner wall of the second outer tube.

[0014] Compared with the prior art, the utility model provides a shovel for pipeline excavation, laying out and grooving, which has the following beneficial effects:

[0015] The utility model discloses a shovel for pipeline excavation, laying out and grooving. When in use, two hands respectively hold a main shovel handle and an auxiliary shovel handle, insert or pull the auxiliary shovel handle, and adjust the total length of the main shovel handle and the auxiliary shovel handle to a suitable length, so that a first limit block is aligned with a limit groove, and the first limit block is clamped into the limit groove under the driving action of a first spring sheet, so as to prevent the auxiliary shovel handle from freely rotating or extending in the main shovel handle, thereby adjusting the length of the shovel handle of the shovel to a length suitable for the height of the user, making it easy to use and improving work efficiency.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement of part A;

[0019] Figure 3 This is a schematic diagram of the first inner tube structure of the utility model;

[0020] Figure 4This is a schematic diagram of the cross-section of the inner structure of the first outer tube of the utility model;

[0021] Figure 5 This is a schematic front view of the first spring piece structure of the utility model;

[0022] Figure 6 For the utility model Figure 1 A schematic diagram of the structure of part B in the middle is enlarged;

[0023] Figure 7 It is a three-dimensional schematic diagram of the threaded pipe structure of the utility model;

[0024] Figure 8 This is a schematic diagram of the main view of the threaded pipe structure of the utility model;

[0025] Fig. 9 It is a cross-sectional schematic diagram of the threaded pipe structure of the utility model from a top view angle.

[0026] In the figure:

[0027] 1. Shovel head; 2. Main shovel handle; 3. Auxiliary shovel handle; 301. Limiting groove; 4. Limiting mechanism; 401. First outer tube; 402. First inner tube; 403. First threaded groove; 404. First spring piece; 405. First slit; 406. First screw thread; 407. First limiting block; 5. Adjustable cushion; 501. Cushion sleeve; 502. Second outer tube; 503. Second inner tube; 504. Screw tube; 505. Second threaded groove; 506. Second spring piece; 507. Second slit; 508. Second screw thread; 509. Second limiting block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Reference Figure 1-8 The utility model discloses a shovel for pipeline excavation, laying out and grooving, comprising a shovel head 1 and a main shovel handle 2 connected to the shovel head 1, wherein one end of the main shovel handle 2 away from the shovel head 1 is axially telescopically connected to an auxiliary shovel handle 3, a telescopic groove is provided inside the main shovel handle 2, and the auxiliary shovel handle 3 extends upward to the outside of the main shovel handle 2.

[0030] A limiting mechanism 4 is installed on the main shovel handle 2, and the limiting mechanism 4 includes a limiting groove 301 and a first spring piece 404. The limiting groove 301 is an arc-surface groove. Multiple limiting grooves 301 are axially arranged on the surface of the auxiliary shovel handle 3. The first spring piece 404 is fixedly connected to the main shovel handle 2. A first limiting block 407 corresponding to the limiting groove 301 is integrally formed on the inner wall of the first spring piece 404. The first limiting block 407 is an arc-shaped protrusion. When the auxiliary shovel handle 3 is inserted or removed, the first limiting block 407 slides in or out of the limiting groove 301. When the first limiting block 407 slides into the limiting groove 301, the auxiliary shovel handle 3 is prevented from extending or rotating. When the first limiting block 407 slides out of the limiting groove 301, it slides in contact with the surface of the auxiliary shovel handle 3.

[0031] The limiting mechanism 4 also includes a first outer tube 401 and a first inner tube 402. The first inner tube 402 is sleeved on the outside of the auxiliary shovel handle 3. The first inner tube 402 is coaxial with the main shovel handle 2 and fixedly connected. The first inner tube 402 is fixed to the end of the main shovel handle 2 away from the shovel head 1.

[0032] The first spring piece 404 is fixedly connected to the first inner tube 402, and the outside of the first inner tube 402 is coaxially and detachably covered with a first outer tube 401 for restraining the first spring piece 404. When the first limit block 407 slides into the limit groove 301, it engages with the limit groove 301. At this time, the first outer tube 401 is moved to cover the outside of the first spring piece 404 to prevent the first spring piece 404 from tilting outward, thereby fixing the relative positions of the main shovel handle 2 and the auxiliary shovel handle 3.

[0033] A U-shaped first slit 405 is formed at the bottom of the inner wall of the first inner tube 402 . A first elastic piece 404 is formed inside the first slit 405 . The top of the first elastic piece 404 is connected to the first inner tube 402 .

[0034] The top of the first spring piece 404 is fixedly connected to the first inner tube 402, and first slits 405 are processed on the left and right sides and between the bottom of the first spring piece 404 and the first inner tube 402. The first slits 405 penetrate the side wall of the first inner tube 402, and the first limit block 407 is fixed at the bottom of the inner wall of the first spring piece 404.

[0035] In fact, the first spring piece 404 and the first inner tube 402 are an integrally formed structure. During manufacturing, the side wall of the first inner tube 402 is cut through along the first slit 405, so that only one end of the first spring piece 404 is fixedly connected to the first inner tube 402. The end of the first spring piece 404 connected to the first inner tube 402 is the fixed end, and the end away from the fixed end is the movable end. The first limit block 407 is located on the inner wall of the movable end.

[0036] During the process of inserting and removing the auxiliary shovel handle 3, when the first limit block 407 slides out of the limit groove 301, the auxiliary shovel handle 3 pushes the first limit block 407 outward, so that the movable end of the first spring piece 404 is tilted outward, and when the first limit block 407 slides into the limit groove 301, the first spring piece 404 restores its original shape under the action of elasticity, so that the first limit block 407 is automatically engaged with the limit groove 301.

[0037] A first thread groove 403 is processed on the outer wall of the first inner tube 402 , and the first thread groove 403 passes through the surface of the first elastic piece 404 . A first thread tooth 406 corresponding to the first elastic piece 404 is processed on the inner wall of the first outer tube 401 .

[0038] The first outer tube 401 is threadedly connected to the first inner tube 402 by the cooperation of the first screw thread 406 and the first thread groove 403. When the first outer tube 401 is screwed, the first outer tube 401 moves axially, approaching or moving away from the first elastic sheet 404, thereby constraining the first elastic sheet 404 or separating from the first elastic sheet 404.

[0039] The length of the first screw thread 406 is smaller than that of the first thread groove 403 , and when the first outer tube 401 is tightened, the first elastic sheet 404 can be completely covered, and when the first outer tube 401 is loosened, the first elastic sheet 404 can be completely exposed.

[0040] An adjustable cushion 5 with a self-locking function is axially slidably installed on the auxiliary shovel handle 3. The adjustable cushion 5 is used for the user to hold it, thereby increasing friction and reducing redness and swelling of the user's hand caused by holding the auxiliary shovel handle 3 for a long time, thereby improving the user experience.

[0041] When in use, the user can slide the adjustable cushion 5 to a suitable position (generally fixed on the end of the auxiliary shovel handle 3 away from the main shovel handle 2, and can also be adjusted to other positions according to personal habits and usage needs) according to his or her height, arm length and other conditions, and then lock the adjustable cushion 5 to facilitate stable grip of the adjustable cushion 5 and operation of the auxiliary shovel handle 3.

[0042] The adjustable cushion 5 includes a cushion sleeve 501, a second inner tube 503, a second spring piece 506, and a second limit block 509. The cushion sleeve 501 is fixedly connected to the second inner tube 503, and the second inner tube 503 is axially slidably mounted on the auxiliary shovel handle 3. The second inner tube 503 is fixedly installed with a second spring piece 506, and the second spring piece 506 is fixedly connected to the second limit block 509 corresponding to the limit groove 301.

[0043] When in use, the second inner tube 503, the second spring piece 506 and the second limit block 509 are driven to move by pushing, pulling or twisting the cushion sleeve 501. When the second limit block 509 slides on the surface of the auxiliary shovel handle 3, the adjustable cushion 5 slides freely on the auxiliary shovel handle 3 to adjust its position. When it is adjusted to a suitable range, the position of the adjustable cushion 5 is fine-tuned so that the second limit block 509 is inserted into the adjacent limit groove 301. Under the elastic action of the second spring piece 506, the second limit block 509 automatically remains engaged with the limit groove 301.

[0044] One end of the second inner tube 503 is connected to a screw tube 504 which is sleeved on the auxiliary shovel handle 3. The second inner tube 503 is coaxial with the screw tube 504. The second spring piece 506 is fixed on the screw tube 504. The second limit block 509 is fixedly mounted on the inner wall of the second spring piece 506. The second outer tube 502 is sleeved on the outside of the screw tube 504.

[0045] When the second outer tube 502 is put on the screw tube 504, the second outer tube 502 prevents the second spring piece 506 from tilting upward, and fixes the relative position between the adjustable cushion 5 and the auxiliary shovel handle 3. When the second outer tube 502 is removed from the screw tube 504, the second spring piece 506 can tilt outward, and the adjustable cushion 5 can move on the auxiliary shovel handle 3.

[0046] A second U-shaped slit 507 is formed at the bottom of the screw tube 504 . The U-shape of the second slit 507 is rotated 90 degrees to the right. A second elastic piece 506 is formed inside the second slit 507 . The right end of the second elastic piece 506 is connected to the screw tube 504 .

[0047] The right end of the second elastic piece 506 is fixedly connected to the screw tube 504 . The upper and lower sides and the left end of the second elastic piece 506 are all provided with second slits 507 . The second slits 507 penetrate the side wall of the screw tube 504 .

[0048] The second spring piece 506 and the screw tube 504 are also an integrally formed structure. During manufacturing, a second slit 507 is cut along the side wall of the screw tube 504 to form the second spring piece 506. The right end of the second spring piece 506 is a fixed end, and the left end is a movable end. The second limit block 509 is located on the inner wall of the movable end of the second spring piece 506.

[0049] A second thread groove 505 is processed on the outer wall of the screw tube 504, and a second screw thread 508 corresponding to the second thread groove 505 is processed on the inner wall of the second outer tube 502. The second outer tube 502 and the screw tube 504 are screwed together by the second screw thread 508 and the second thread groove 505.

[0050] When the second outer tube 502 is tightened, the second outer tube 502 can completely cover the second elastic sheet 506 , and when the second outer tube 502 is loosened, the second elastic sheet 506 can completely leak out.

[0051] In the present application, the outer diameters of the first outer tube 401 , the cushion sleeve 501 , and the second outer tube 502 are the same as the outer diameter of the main shovel handle 2 , which is convenient for holding.

[0052] Working principle: when laying out and grooving the pipeline, first loosen the first outer tube 401 to completely disengage the first outer tube 401 from the first spring piece 404, then twist the auxiliary shovel handle 3 to disengage the first limit block 407 from the limit groove 301, and the auxiliary shovel handle 3 pushes the first limit block 407 and the first spring piece 404 outward, and then plug and unplug the auxiliary shovel handle 3, adjust the extended length of the auxiliary shovel handle 3, so that the length of the main shovel handle 2 and the auxiliary shovel handle 3 conforms to the user's own usage habits, and then fine-tune the position of the auxiliary shovel handle 3 so that the first limit block 407 is aligned and engaged with the adjacent limit groove 301, and finally tighten the first outer tube 401 to fix the position of the auxiliary shovel handle 3. Similarly, the position of the adjustable cushion 5 can be adjusted.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A shovel for pipeline excavation, laying out and grooving, comprising a shovel head (1) and a main shovel handle (2) connected to the shovel head (1), characterized in that: An auxiliary shovel handle (3) is axially retractable at one end of the main shovel handle (2) away from the shovel head (1); a limiting mechanism (4) is provided on the main shovel handle (2); the limiting mechanism (4) comprises a limiting groove (301) and a first spring sheet (404); a plurality of the limiting grooves (301) are axially arranged on the surface of the auxiliary shovel handle (3); the first spring sheet (404) is fixedly connected to the main shovel handle (2); and a first limiting block corresponding to the limiting groove (301) is provided on the inner wall of the first spring sheet (404).

2. A shovel for pipeline excavation, laying out and grooving according to claim 1, characterized in that: The limiting mechanism (4) further comprises a first outer tube (401) and a first inner tube (402); the first inner tube (402) is sleeved on the outside of the auxiliary shovel handle (3); the first inner tube (402) and the main shovel handle (2) are coaxial and fixedly connected; the first spring piece (404) is arranged on the first inner tube (402); the outside of the first inner tube (402) is coaxially and detachably sleeved with the first outer tube (401) for restraining the first spring piece (404).

3. A shovel for pipeline excavation, laying out and grooving according to claim 2, characterized in that: A U-shaped first slit (405) is provided at the bottom of the inner wall of the first inner tube (402), a first elastic sheet (404) is formed inside the first slit (405), and the top of the first elastic sheet (404) is connected to the first inner tube (402).

4. A shovel for pipeline excavation, laying out and grooving according to claim 3, characterized in that: A first thread groove (403) is provided on the outer wall of the first inner tube (402), the first thread groove (403) passes through the surface of the first elastic sheet (404), and a first thread corresponding to the first elastic sheet (404) is provided on the inner wall of the first outer tube (401).

5. The shovel for pipeline excavation, laying out and grooving according to claim 1, characterized in that: An adjustable soft pad (5) with a self-locking function is axially slidably arranged on the auxiliary shovel handle (3).

6. A shovel for pipeline excavation, laying out and grooving according to claim 5, characterized in that: The adjustable soft cushion (5) comprises a soft cushion sleeve (501), a second inner tube (503), a second spring piece (506), and a second limiting block (509); the inside of the soft cushion sleeve (501) is fixedly connected to the second inner tube (503); the second inner tube (503) is axially slidably sleeved on the auxiliary shovel handle (3); the second inner tube (503) is provided with a second spring piece (506); the inside of the second spring piece (506) is provided with a second limiting block (509) corresponding to the limiting groove (301).

7. A shovel for pipeline excavation, laying out and grooving according to claim 6, characterized in that: One end of the second inner tube (503) is connected to a screw tube (504) sleeved on the auxiliary shovel handle (3); the second spring piece (506) is arranged on the screw tube (504); and the second outer tube (502) is sleeved on the outside of the screw tube (504).

8. The shovel for pipeline excavation, laying out and grooving according to claim 7, characterized in that: A U-shaped second slit (507) is provided at the bottom of the screw tube (504), a second spring piece (506) is formed inside the second slit (507), and the right end of the second spring piece (506) is connected to the screw tube (504).

9. A shovel for pipeline excavation, laying out and grooving according to claim 8, characterized in that: A second thread groove (505) is provided on the outer wall of the threaded tube (504), and a second thread tooth (508) corresponding to the second thread groove (505) is provided on the inner wall of the second outer tube (502).

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