Foundation pit excavation device for civil construction

Abstract

The utility model discloses a foundation pit excavation device for civil construction, including wood pole, the both ends of wood pole are detachably connected with spade head and sleeve pipe, the top opening of sleeve pipe is movably equipped with the inside rod, the top of sleeve pipe is provided with the locking mechanism for fixed inside rod, the top fixed connection of inside rod has the connecting sleeve, the top opening of connecting sleeve is equipped with the connecting rod, in the utility model, adjust the inside rod's overhanging length on sleeve pipe, then operate locking mechanism and fix inside rod with sleeve pipe to adjust the interval between spade head and handle, through the convex strip on connecting rod inserts into different recess, can adjust the included angle between handle and spade head, through the screwing inside thread sleeve joint on connecting sleeve, can fix connecting rod with connecting sleeve to the convenient different worker when using this device, according to the use habit, the interval and the included angle between handle and spade head are adjusted quickly, and use more convenient.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit construction technology, specifically a foundation pit excavation device for civil engineering construction. Background Technology

[0002] With the continuous development of construction machinery, most of the excavators used in the construction of civil engineering foundation pits are now used for unloading and excavation. However, since excavators cannot operate with precision, workers still need to use shovels to excavate the bottom, corners and other special areas of the foundation pit in order to more accurately control the excavation depth, prevent over-excavation, and minimize disturbance to the foundation soil.

[0003] Most shovels commonly used in engineering projects are of a fixed structure, consisting of a shovel head, a handle, and a grip. The distance and angle between the shovel head and the grip cannot be adjusted. Since different construction workers have different heights, arm spans, and force exertion habits, fixed-structure shovels cannot meet the usage habits of different workers and need to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a foundation pit excavation device for civil engineering construction, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A foundation pit excavation device for civil construction includes a wooden pole with a shovel head and a sleeve detachably connected to both ends. An inner rod is movably inserted through the top opening of the sleeve, and a locking mechanism for fixing the inner rod is provided at the top of the sleeve. A connecting sleeve is fixedly connected to the top of the inner rod, and a connecting rod is inserted through the top opening of the connecting sleeve. Multiple protrusions are circumferentially distributed on the bottom of the outer wall of the connecting rod. A groove matching the protrusions is formed on the inner wall of the connecting sleeve. An internally threaded sleeve is fitted on the outer wall of the connecting rod. The connecting sleeve is connected to the internally threaded sleeve through an external thread. A limit ring is fixedly fitted on the outer wall of the connecting rod inside the internally threaded sleeve. A handle is fixedly installed at the top of the connecting rod.

[0007] As a further embodiment of this utility model: the top opening size of the internal threaded sleeve is adapted to the outer diameter of the connecting rod, and the outer diameter of the limiting ring is larger than the top opening size of the connecting sleeve and the internal threaded sleeve.

[0008] As a further embodiment of this utility model: the locking mechanism includes a nut sleeved on the top end of the sleeve, the top end of the sleeve is provided with multiple opening slots distributed in a circular pattern to form multiple petals at the top end of the sleeve, the outer wall of each petal is provided with an external thread adapted to the nut, the top end of each petal is chamfered, and the top opening of the nut is conical.

[0009] As a further embodiment of this utility model, the outer walls of both the inner rod and the nut are provided with anti-slip textures.

[0010] As a further embodiment of this utility model: a guide groove is provided on the outer wall of the inner rod, and a guide pin is fixedly inserted through the outer wall of the sleeve, with the guide pin located inside the guide groove.

[0011] As a further embodiment of this utility model: the sleeve and the shovel head are respectively sleeved on both ends of the wooden rod, and both the sleeve and the shovel head are interference fit with the wooden rod. Both the sleeve and the shovel head are fixedly connected to the wooden rod by self-tapping screws, and the sleeve and the shovel head are provided with through holes adapted to the self-tapping screws.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the extension length of the inner rod is adjusted on the sleeve, and then the locking mechanism is used to fix the inner rod to the sleeve to adjust the distance between the shovel head and the handle. By inserting the protrusion on the connecting rod into different grooves, the included angle between the handle and the shovel head can be adjusted. By tightening the internal thread on the connecting sleeve, the connecting rod and the connecting sleeve can be fixed. This allows different workers to quickly adjust the distance and included angle between the handle and the shovel head according to their usage habits when using this device, making it more convenient to use. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a foundation pit excavation device for civil engineering construction.

[0015] Figure 2 for Figure 1 A partial sectional view.

[0016] Figure 3 for Figure 1 Sectional view at point A in the middle.

[0017] Figure 4 This is a schematic diagram of the protruding strip in a foundation pit excavation device for civil engineering construction.

[0018] Among them, the components are: 1. wooden rod, 2. shovel head, 3. sleeve, 4. self-tapping screw, 5. guide pin, 6. inner rod, 7. guide groove, 8. opening groove, 9. petal body, 10. nut, 11. connecting sleeve, 12. groove, 13. connecting rod, 14. protrusion, 15. limiting ring, 16. internal thread sleeve, and 17. handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 In this embodiment of the present invention, a foundation pit excavation device for civil construction includes a wooden pole 1. A shovel head 2 and a sleeve 3 are detachably connected to both ends of the wooden pole 1. An inner rod 6 is movably inserted through the top opening of the sleeve 3. A locking mechanism for fixing the inner rod 6 is provided at the top of the sleeve 3. A connecting sleeve 11 is fixedly connected to the top of the inner rod 6. A connecting rod 13 is inserted through the top opening of the connecting sleeve 11. Multiple protrusions 14 are circumferentially distributed on the bottom of the outer wall of the connecting rod 13. The connecting sleeve 11... The inner wall has a groove 12 that matches the protrusion 14. The outer wall of the connecting rod 13 is fitted with an internally threaded sleeve 16. The connecting sleeve 11 is connected to the internally threaded sleeve 16 through an external thread. The outer wall of the connecting rod 13 located inside the internally threaded sleeve 16 is fixedly fitted with a limiting ring 15. A handle 17 is fixedly installed at the top of the connecting rod 13. The top opening size of the internally threaded sleeve 16 is adapted to the outer diameter of the connecting rod 13. The outer diameter of the limiting ring 15 is larger than the top opening size of the connecting sleeve 11 and the internally threaded sleeve 16.

[0021] By adopting the above-described solution, this utility model allows for adjustment of the extension length of the inner rod 6 on the sleeve 3 during use. Then, the locking mechanism is used to fix the inner rod 6 to the sleeve 3, thereby adjusting the distance between the shovel head 2 and the handle 17. By inserting the protrusion 14 on the connecting rod 13 into different grooves 12, the angle between the handle 17 and the shovel head 2 can be adjusted. Finally, by tightening the internal threaded fitting 16 on the connecting sleeve 11, the connecting rod 13 and the connecting sleeve 11 can be fixed. This allows different workers to quickly adjust the distance and angle between the handle 17 and the shovel head 2 according to their usage habits, making the device more convenient to use.

[0022] Specific combination Figure 2 and Figure 3 In one embodiment of the present invention, the locking mechanism includes a nut 10 sleeved on the top end of the sleeve 3. The top end of the sleeve 3 is provided with a plurality of circumferentially distributed openings 8 to form a plurality of petals 9 at the top end of the sleeve 3. The outer wall of each petal 9 is provided with an external thread adapted to the nut 10. The top end of each petal 9 is chamfered. The top opening of the nut 10 is conical.

[0023] By tightening the nut 10 at the top of the sleeve 3, the conical inner wall of the nut 10 can be used to apply pressure to the valve body 9 by cooperating with the chamfer at the top of the valve body 9, so as to push each valve body 9 to deform and clamp the inner rod 6. The operation is simple and convenient.

[0024] Specific combination Figure 1 In one embodiment of this utility model, the outer walls of the inner rod 6, the inner threaded sleeve 16, and the nut 10 are all provided with anti-slip textures. The anti-slip textures on the inner rod 6 can increase the friction between the inner rod 6 and the inner wall of the valve body 9, thereby improving the reliability of the valve body 9 clamping the inner rod 6 and preventing slippage between the two. The anti-slip textures on the inner threaded sleeve 16 and the nut 10 facilitate the rotation operation of the two.

[0025] Specific combination Figure 2 and Figure 3 In one embodiment of this utility model, the outer wall of the inner rod 6 is provided with a guide groove 7, and the outer wall of the sleeve 3 is fixedly provided with a guide pin 5. The guide pin 5 is located in the guide groove 7. Through the cooperation of the guide groove 7 and the guide pin 5, the inner rod 6 can be guided in the sleeve 3 to prevent relative rotation between the inner rod 6 and the sleeve 3. Thus, when adjusting the length of the inner rod 6 extending out of the sleeve 3, the included angle between the handle 17 and the shovel head 2 is prevented from changing.

[0026] Specific combination Figure 1 In one embodiment of this utility model, the sleeve 3 and the shovel head 2 are respectively sleeved on both ends of the wooden rod 1, and both the sleeve 3 and the shovel head 2 are interference fit with the wooden rod 1. The sleeve 3 and the shovel head 2 are fixedly connected to the wooden rod 1 by self-tapping screws 4. The sleeve 3 and the shovel head 2 are provided with through holes adapted to the self-tapping screws 4, so as to facilitate replacement when the shovel head 2 or the wooden rod 1 is damaged.

[0027] In addition, to reduce the weight of the device, all components except the shovel head 2 and the wooden rod 1 can be made of high-strength engineering plastics.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundation pit excavation device for civil engineering construction, characterized in that: The device includes a wooden rod (1), with a shovel head (2) and a sleeve (3) detachably connected to both ends of the wooden rod (1). An inner rod (6) is movably inserted through the top opening of the sleeve (3). A locking mechanism for fixing the inner rod (6) is provided at the top of the sleeve (3). A connecting sleeve (11) is fixedly connected to the top of the inner rod (6). A connecting rod (13) is inserted through the top opening of the connecting sleeve (11). Multiple protrusions (14) are arranged in a circular pattern at the bottom of the outer wall of the connecting rod (13). A groove (12) matching the protrusions (14) is opened on the inner wall of the connecting sleeve (11). An internal threaded sleeve (16) is fitted on the outer wall of the connecting rod (13). The connecting sleeve (11) is connected to the internal threaded sleeve (16) through an external thread. A limit ring (15) is fixedly fitted on the outer wall of the connecting rod (13) inside the internal threaded sleeve (16). A handle (17) is fixedly installed at the top of the connecting rod (13).

2. The foundation pit excavation device for civil construction according to claim 1, characterized in that: The top opening size of the internal threaded sleeve (16) is adapted to the outer diameter of the connecting rod (13), and the outer diameter of the limiting ring (15) is larger than the top opening size of the connecting sleeve (11) and the internal threaded sleeve (16).

3. The foundation pit excavation device for civil construction according to claim 1, characterized in that: The locking mechanism includes a nut (10) sleeved on the top of the sleeve (3). The top of the sleeve (3) has multiple opening slots (8) distributed in a circular pattern to form multiple petals (9) at the top of the sleeve (3). The outer wall of each petal (9) is provided with an external thread that is compatible with the nut (10). The top of each petal (9) is chamfered, and the top opening of the nut (10) is conical.

4. The foundation pit excavation device for civil construction according to claim 3, characterized in that: The outer walls of the inner rod (6) and the nut (10) are both provided with anti-slip textures.

5. The foundation pit excavation device for civil construction according to claim 1, characterized in that: The outer wall of the inner rod (6) is provided with a guide groove (7), and the outer wall of the sleeve (3) is fixedly provided with a guide pin (5), which is located in the guide groove (7).

6. The foundation pit excavation device for civil construction according to claim 1, characterized in that: The sleeve (3) and the shovel head (2) are respectively fitted onto both ends of the wooden rod (1), and both the sleeve (3) and the shovel head (2) are interference-fitted with the wooden rod (1). Both the sleeve (3) and the shovel head (2) are fixedly connected to the wooden rod (1) by self-tapping screws (4). Through holes adapted to the self-tapping screws (4) are provided on the sleeve (3) and the shovel head (2).

Images