Tool shovel having labor-saving lever structure
By designing a tool shovel with a labor-saving lever structure, and utilizing the lever principle and buffer elastic components, the problems of low operating efficiency and high labor intensity of traditional shovels are solved, achieving efficient and uniform sand mixing and sand-spreading operations.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUIZHOU ZHENGZI TECHNOLOGY CO LTD
- Filing Date
- 2026-01-20
- Publication Date
- 2026-06-25
AI Technical Summary
Traditional manual sand mixing with shovels is inefficient, physically demanding, and can easily cause spinal strain and workplace injuries.
Design a tool shovel with a labor-saving lever structure. Utilizing the lever principle, it achieves labor-saving operation, reduces the burden on workers, and optimizes the sand-spraying effect through roller support and cushioning elastic components.
By combining the lever principle with a buffer elastic component, the labor intensity of workers is reduced, the efficiency of sand mixing and the uniformity of sand dispersal are improved, and the risk of work-related injuries is reduced.
Abstract
Description
A tool shovel with a labor-saving lever structure Technical Field
[0001] This invention relates to the field of tool shovel technology, and in particular to a tool shovel with a force-saving lever structure. Background Technology
[0002] A shovel, also known as a spade, is a common tool for digging, lifting, or moving materials. It is suitable for loose materials such as sand, snow, and soil, and is widely used in construction, landscaping, agriculture, and other fields. For example, in the construction and decoration industry, it is often necessary to mix sand and cement evenly. When mechanical equipment cannot be used, workers usually use traditional hand shovels to continuously shovel and toss sand to achieve the mixing.
[0003] However, the traditional manual sand-mixing method using shovels is ineffective in terms of mixing, requiring workers to repeat the process multiple times, resulting in numerous operations, long processing times, and low work efficiency. Furthermore, workers must bend over and swing the shovel to insert the shovel head into the sand pile and scoop up more sand. During this process, workers bear the weight of both the sand and the shovel itself, leading to high labor intensity, increased risk of spinal strain, and even workplace injuries.
[0004] Therefore, how to design a tool shovel with a labor-saving lever structure to overcome the above-mentioned technical problems is needed. Summary of the Invention
[0005] In view of the shortcomings of the prior art, the present invention provides a tool shovel with a force-saving lever structure, which can achieve force-saving operation by utilizing the lever principle, thereby overcoming the above-mentioned technical problems.
[0006] The objective of this invention is achieved through the following technical solution:
[0007] A tool shovel with a labor-saving lever structure includes: a front shovel component, an operating component, a moving component, and a support body, wherein the front shovel component, the operating component, and the moving component are all disposed on the support body;
[0008] The moving component includes a roller, which is pressed against the ground. A resistance point and a power point are formed above the roller. The resistance point is located on the support body, and the power point is located on the support body or the operating component. The distance from the resistance point to the roller is L1, and the distance from the power point to the roller is L2, where L1 < L2.
[0009] In one embodiment, the front shovel component includes a shovel bar and a shovel head disposed at the end of the shovel bar, the shovel bar being connected to the support body, and the junction of the shovel bar and the support body forming the resistance point;
[0010] The control component includes an extension, which is a curved rod structure. The extension has a connecting part and a corner. The connecting part is connected to the support body, and the corner forms the power application point.
[0011] In one embodiment, the support body is provided with a clamp assembly, and the connecting part of the extension is slidably and adjustably disposed on the support body through the clamp assembly.
[0012] In one embodiment, the support body is a straight rod structure;
[0013] The front shovel component includes a shovel bar and a shovel head located at the end of the shovel bar. The shovel bar is connected to the support body, and the junction of the shovel bar and the support body forms the resistance point.
[0014] The control component includes an extension of a straight rod structure, which is connected to the support body, and the junction of the extension and the support body forms the power application point.
[0015] In one embodiment, the supporting body is a telescopic structure or a split structure.
[0016] In one embodiment, the support body is provided with a connecting sleeve, and the shovel bar is connected to the support body through the connecting sleeve;
[0017] The connecting sleeve is provided with a plug-in part and a sleeve part. The shovel rod and the extension are plugged into the plug-in part, and the sleeve part is slidably disposed on the support body. The plug-in part and the sleeve part are integrally formed.
[0018] In one embodiment, the support body is provided with a locking assembly, which includes a rod assembly and a locking member. The shovel rod is inserted into the rod assembly, and the locking member is sleeved on the support body. The rod assembly and the locking member are hinged together by an adjusting screw, and the adjusting screw is used to achieve tightness and fixation.
[0019] In one embodiment, the support body is a curved rod structure;
[0020] The front shovel component includes a shovel head, which is connected to the support body.
[0021] The point of contact between the moving component and the supporting body forms the resistance point;
[0022] The control component includes an extension member connected to the support body, and the junction of the extension member and the support body forms the power application point.
[0023] In one embodiment, the moving component includes a cushioning elastic component disposed between the support body and the roller.
[0024] In one embodiment, the buffer elastic component includes a telescopic rod and an elastic element, the elastic element being a spring structure and sleeved around the telescopic rod; one end of the telescopic rod is connected to the support body, and the other end of the telescopic rod is provided with a wheel frame for mounting the roller.
[0025] In summary, the tool shovel with the lever structure of the present invention can achieve labor-saving operation by utilizing the lever principle, thereby reducing the burden on workers during operation and reducing labor intensity; at the same time, it optimizes the sand-spreading effect, making the sand mixing more uniform, thereby improving work efficiency. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.
[0027] Figure 1 is a schematic diagram of the tool shovel structure of the force-saving lever structure of the present invention;
[0028] Figure 2 is a plan view of the tool shovel with the force-saving lever structure shown in Figure 1;
[0029] Figure 3 is a schematic diagram of the structure of the moving component shown in Figure 1;
[0030] Figure 4 is an exploded view of the tool shovel with the force-saving lever structure of Embodiment 1;
[0031] Figure 5 is a schematic diagram of the integrated extension component in Embodiment 1;
[0032] Figure 6 is a schematic diagram of the tool shovel with the force-saving lever structure in Embodiment 2;
[0033] Figure 7 is a partially exploded view of the tool shovel with the force-saving lever structure of Embodiment 2;
[0034] Figure 8 is a schematic diagram of the tool shovel with the force-saving lever structure in Embodiment 3;
[0035] Figure 9 is a partially exploded view of the tool shovel with the force-saving lever structure of Embodiment 3;
[0036] Figure 10 is a schematic diagram of the fit between the support body and the connecting sleeve;
[0037] Figure 11 is a schematic diagram of the cooperation relationship between the support body and the locking assembly. Detailed Implementation
[0038] To facilitate understanding of the present invention, a more comprehensive description will be provided below with reference to the accompanying drawings. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships are also considered within the scope of the present invention without substantial alteration of the technical content.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0040] The present invention provides a tool shovel 10 with a force-saving lever structure, as shown in Figures 1 and 2, which includes: a front shovel component 100, an operating component 200, a moving component 300, and a support body 400. The front shovel component 100, the operating component 200, and the moving component 300 are all disposed on the support body 400.
[0041] As shown in Figure 2, the front shovel component 100 includes a shovel head 110 for supporting sand, and the operating component 200 includes an extension 210 connected to the support body 400. The moving component 300 includes a roller 310, which is pressed against the ground. A resistance point 301 and a power point 302 are formed above the roller 310. The resistance point 301 is located on the support body 400, and the power point 302 is located on either the support body 400 or the operating component 200. The distance from the resistance point 301 to the roller 310 is less than the distance from the power point 302 to the roller 310. For ease of explanation, the distance from the resistance point 301 to the roller 310 is referred to as L1, and the distance from the power point 302 to the roller 310 is referred to as L2, where L1 < L2.
[0042] The tool shovel 10 of this invention mainly utilizes the lever principle formed by L1 < L2, enabling labor-saving operation during sand shoveling and sand-throwing. Its main operating principle is as follows: Taking sand mixing during decoration as an example, firstly, the moving part 300 is placed on the ground via the roller 310. The worker applies a pushing force to the operating part 200, causing the tool shovel 10 to move forward and insert the shovel head 110 into the sand pile. Then, the worker pulls the operating part 200 backward, causing the tool shovel 10 to move backward a certain distance. The shovel head 110 shovels up some sand and separates it from the sand pile, thus completing the sand shoveling operation. Next, the worker presses down on the extension 210 of the operating part 200, causing the tool shovel 10 to swing around the roller 310 as a fulcrum, thereby causing the shovel head 110 of the front shovel part 100 to tilt upward. At this time, the sand separates from the shovel head 110 under the action of centrifugal force, that is, the shovel head 110 throws the sand forward, completing the sand-throwing operation. The sand is dispersed in the air and then falls back onto the sand pile or the ground. This process is repeated to achieve uniform mixing of the sand pile.
[0043] During sand shoveling and sand-throwing, the roller 310 of the moving part 300 is supported on the ground, and the weight of the tool shovel 10 itself and the weight of the sand are borne by the moving part 300, thus greatly reducing the burden on the worker. Secondly, the roller 310 serves as the rotation center of the tool shovel 10, and the weight borne by the shovel head 110 is transmitted to the supporting body 400. The force acts at the resistance point 301, and the lever arm of the resistance is the distance L1 from the resistance point 301 to the roller 310. The worker's operation is transmitted to the supporting body 400 through the extension 210 of the operating part 200, and the force acts at the power point 302. The lever arm of the driving force is the distance L2 from the power point 302 to the roller 310. Since L2 > L1, it can save effort.
[0044] Further, as shown in Figure 1, the moving part 300 includes a buffer elastic component 320, which is disposed between the support body 400 and the roller 310. It should be emphasized that the buffer elastic component 340 plays an important role in use, providing elastic force between the support body 400 and the moving part 300, so that the sand can be lifted higher and spread more widely in the air during the sand-throwing operation.
[0045] Specifically, during sand-throwing, the worker quickly presses down on the operating component 200, causing the tool shovel 10 to sway around the roller 310 as a fulcrum. Simultaneously, excess downward pressure compresses the buffer elastic component 320. At the moment the worker stops applying force, the accumulated elastic potential energy in the buffer elastic component 320 is rapidly released, causing the tool shovel 10 to tend to jump upwards. This results in a greater centrifugal force on the sand on the shovel head 110 at the moment of lifting, allowing it to spread more evenly in the air, thus achieving better sand-throwing operation and promoting more uniform mixing of the sand pile.
[0046] Preferably, as shown in Figure 3, the buffer elastic component 320 includes a telescopic rod 321 and an elastic element 322. The elastic element 322 is a spring structure and is sleeved around the telescopic rod 321. One end of the telescopic rod 321 is connected to the support body 400, and the other end of the telescopic rod 321 is provided with a wheel frame 323 for mounting the roller 310.
[0047] Preferably, the operating component 200 also includes a grip bar 220 (as shown in Figure 1). The grip bar 220 is located at the end of the extension 210. The grip bar 220 is designed to facilitate push-pull operations by the worker and to make it more ergonomic.
[0048] The front shovel component 100, operating component 200, moving component 300, and supporting body 400 of the present invention have various structural styles and combinations. The specific structure of the tool shovel 10 with the effort-saving lever structure is described below through some specific embodiments. Example
[0049] As shown in Figures 1, 2 and 4, the front shovel component 100 also includes a shovel bar 120, a shovel head 110 is located at the end of the shovel bar 120, the shovel bar 120 is connected to the support body 400, and the junction of the shovel bar 120 and the support body 400 forms a resistance force point 301.
[0050] The extension 210 of the control component 200 is a curved rod structure. The extension 210 is provided with a connecting part 211 and a corner 212. The connecting part 211 is connected to the support body 400, and the corner 212 forms a power application point 302. The moving component 300 is provided on the support body 400.
[0051] Preferably, the support body 400 is provided with a clamp assembly 410 (as shown in Figure 4), and the connecting portion 211 of the extension 210 is slidably and adjustably disposed on the support body 400 via the clamp assembly 410. The clamp assembly 410 is prior art well known to those skilled in the art, therefore it will not be described in detail here; readers can refer to existing technologies. It is worth noting that the sliding adjustment of the connecting portion 211 on the support body 400 can change the height of the corner 212, that is, change the position of the power application point 302, and thus change the height of the end of the extension 210, thereby adapting to workers of different heights.
[0052] It should also be noted that the extension 210 can be a one-piece molded structure (as shown in Figure 5), or it can be constructed by segmented connection (as shown in Figure 4), telescopic, folding, etc., so as to facilitate subsequent storage and carrying. Example
[0053] As shown in Figures 6 and 7, the supporting body 400 is a straight rod structure;
[0054] The front shovel component 100 also includes a shovel bar 120, a shovel head 110 located at the end of the shovel bar 120, the shovel bar 120 being connected to the support body 400, and the junction of the shovel bar 120 and the support body 400 forming a resistance point 301;
[0055] The extension 210 of the control component 200 is a straight rod (as shown in Figure 6) or a curved rod structure (as shown in Figure 7), and the extension 210 is connected to the support body 400, and the joint between the extension 210 and the support body 400 forms a power application point 302.
[0056] Preferably, for ease of storage and transport, the support body 400 can also adopt a telescopic rod structure or a folding structure. This allows the support body 400 to be retracted or folded when not in use, thus shortening its length. Similarly, the support body 400 can also adopt a split structure, dividing it into at least two sections. This allows it to be disassembled to shorten its length when not in use and reassembled when needed. Likewise, the extension 210 can be a one-piece molded structure or constructed through segmented connections, telescopic extension, or folding for subsequent storage and transport. Whether it is a telescopic rod structure, a folding structure, or a split structure, all are prior art known to those skilled in the art, and therefore will not be described further in this invention. Example
[0057] As shown in Figures 8 and 9, the support body 400 is a curved rod structure, and the shovel head 110 of the front shovel component 100 is connected to the support body 400.
[0058] The point of contact between the moving part 300 and the supporting body 400 forms a resistance point 301;
[0059] The extension 210 of the control component 200 is connected to the support body 400, and the joint between the extension 210 and the support body 400 forms a power application point 302.
[0060] In this embodiment, the support body 400 with a bent rod structure realizes the function of the shovel 120 in other embodiments, thereby eliminating the need for the shovel 120 and reducing production costs.
[0061] It should be noted that in the above embodiments, there are multiple connection methods between the shovel 120 and the support body 400, and between the extension 210 and the support body 400. For example, in the simplest case, the support body 400 can be fixedly connected to the shovel 120 and the extension 210 respectively through welding, riveting, or screws. This type of fixed connection ensures that the positions of the resistance point 301 and the power point 302 are relatively fixed, meaning that the lengths of L1 and L2 do not change.
[0062] Of course, a movable connection method can also be adopted, so that the positions of the resistance point 301 and the power point 302 can be adjusted adaptively as needed. That is to say, the lengths of L1 and L2 are adjustable. For example, as shown in Figure 10, the support body 400 is provided with a connecting sleeve 420, and the shovel 120 is connected to the support body 400 through the connecting sleeve 420. The connecting sleeve 420 is provided with an insertion part 421 and a sleeve part 422. The shovel 120 and the extension 210 are inserted into the insertion part 421, and the sleeve part 422 is slidably disposed on the support body 400. The insertion part 421 and the sleeve part 422 are integrally formed, so that the angle between the shovel 120 and the support body 400 and the angle between the extension 210 and the support body 400 are fixed. This connecting sleeve 420 has the advantages of simple and reliable structure and low production cost, and the included angle is fixed, which also makes it easy to add reinforcing ribs or reinforcing rods (not shown) to enhance the overall strength of the connecting sleeve 420 and improve the stability of the tool shovel 10.
[0063] For example, as shown in Figure 11, the support body 400 is equipped with a locking assembly 430, which includes a rod assembly 431 and a locking movable part 432. The shovel 120 or the extension 210 is inserted into the rod assembly 431, and the locking movable part 432 is sleeved on the support body 400. The rod assembly 431 and the locking movable part 432 are hinged together by an adjusting screw 433, and the screw is adjusted to tighten or loosen the connection. In this connection method, the angle between the shovel 120 and the support body 400, and the angle between the extension 210 and the support body 400 are adjustable. Workers can change the angle between the shovel 120 and the support body 400 as needed, thereby changing the inclination of the shovel 120 to adapt to different operations; they can also change the angle between the extension 210 and the support body 400, and then, in conjunction with the position adjustment of the power application point 302, further change the height of the end of the extension 210 to accommodate different heights.
[0064] It should also be noted that with this type of movable connection, the front shovel component 100, the operating component 200, and the moving component 300 can be separated from each other, thus facilitating storage and carrying. In particular, with the connection method of the locking assembly 430, the shovel bar 120, the extension 210, and the moving component 300 can also be attached to the support body 400 by rotating and folding, which also achieves convenient storage and carrying.
[0065] In summary, the tool shovel 10 with the lever structure of the present invention can achieve labor-saving operation by utilizing the lever principle, thereby reducing the burden on workers during operation and reducing labor intensity; at the same time, it optimizes the sand-spreading effect, making the sand mixing more uniform, thereby improving work efficiency.
[0066] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A tool spade of the force multiplying lever construction, characterised in that, include: The device includes a front shovel component, an operating component, a moving component, and a supporting body, wherein the front shovel component, the operating component, and the moving component are all mounted on the supporting body. The moving component includes a roller, which is pressed against the ground. A resistance point and a power point are formed above the roller. The resistance point is located on the support body, and the power point is located on the support body or the operating component. The distance from the resistance point to the roller is L1, and the distance from the power point to the roller is L2, where L1 < L2.
2. The tool shovel with the labor-saving lever structure according to claim 1, characterized in that, The front shovel component includes a shovel bar and a shovel head located at the end of the shovel bar. The shovel bar is connected to the support body, and the junction of the shovel bar and the support body forms the resistance point. The control component includes an extension, which is a curved rod structure. The extension has a connecting part and a corner. The connecting part is connected to the support body, and the corner forms the power application point.
3. The tool spade of claim 2 wherein, The support body is provided with a clamp assembly, and the connecting part of the extension is slidably and adjustablely disposed on the support body through the clamp assembly.
4. The tool shovel with the labor-saving lever structure according to claim 1, characterized in that, The supporting structure is a straight rod structure; The front shovel component includes a shovel bar and a shovel head located at the end of the shovel bar. The shovel bar is connected to the support body, and the junction of the shovel bar and the support body forms the resistance point. The operating component includes an extension member connected to the support body, and the junction of the extension member and the support body forms the power application point.
5. The tool spade of claim 4 wherein, The supporting structure is a telescopic structure or a split structure.
6. The tool spade of claim 2 to 4 wherein, The support body is provided with a connecting sleeve, and the shovel bar is connected to the support body through the connecting sleeve; The connecting sleeve is provided with a plug-in part and a sleeve part. The shovel rod and the extension are plugged into the plug-in part, and the sleeve part is slidably disposed on the support body. The plug-in part and the sleeve part are integrally formed.
7. The tool spade of claim 2, 3 or 4 wherein, The support body is provided with a locking assembly, which includes a rod assembly and a locking member. The shovel rod is inserted into the rod assembly, and the locking member is sleeved on the support body. The rod assembly and the locking member are hinged together by an adjusting screw, and the adjusting screw is used to achieve tightness and fixation.
8. The tool shovel with the labor-saving lever structure according to claim 1, characterized in that, The supporting structure is a curved rod structure; The front shovel component includes a shovel head, which is connected to the support body. The point of contact between the moving component and the supporting body forms the resistance point; The operating component includes an extension member connected to the support body, and the junction of the extension member and the support body forms the power application point.
9. The tool spade of claim 1 wherein, The moving part includes a cushioning elastic component, which is disposed between the support body and the roller.
10. The tool spade of claim 9 wherein, The buffer elastic assembly comprises a telescopic rod and an elastic piece, the elastic piece is a spring structure, and the elastic piece is sleeved on the periphery of the telescopic rod; One end of the telescopic rod is connected with the support body, and the other end of the telescopic rod is provided with a wheel frame for mounting the roller.