Hydraulic disk saw

Abstract

The utility model discloses a hydraulic disk saw which comprises a frame body, a saw disk and a first protective cover, an annular sliding rail is installed on the first protective cover, a second protective cover is installed on the annular sliding rail, the second protective cover is connected to the outer side of the first protective cover in a sleeved mode, and a plurality of rolling pieces are installed on the second protective cover. The multiple rolling pieces move along the interior of the annular sliding rail, the annular sliding rail is fixedly connected to the first protection cover, the two ends of the annular sliding rail and the two ends of the first protection cover are located on the same plane, and when one end of the second protection cover and one end of the first protection cover are located on the same plane, the rolling pieces move. And the other end of the second protective cover and the other end of the first protective cover are also positioned on the same plane. Compared with the prior art, the hydraulic disk saw has the advantages that the annular protective cover capable of stretching out and retracting is installed on the outer side of the upper shell of the disk saw blade, the disk saw blade can be wrapped and protected in the process of carrying and transporting the hydraulic disk saw, and carrying and transporting are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of circular saws, specifically relating to a hydraulic circular saw. Background Technology

[0002] A hydraulic circular saw is a cutting tool powered by a hydraulic pump. High-pressure fluid flows to a hydraulic motor, driving the circular saw to rotate. When the hydraulic motor rotates, the power is transmitted to the saw blade, causing it to rotate at high speed. The saw teeth of the blade are close to the surface of the object being cut, achieving the cutting operation. It can be used for horizontal and vertical cutting of various materials, such as concrete, rock, steel structures, brick walls, and asphalt.

[0003] The blades mounted on hydraulic circular saws have relatively sharp ends, making it inconvenient to carry and transport them without a storage box or by disassembling the blades. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic circular saw to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a hydraulic circular saw, including a frame, a saw disc, and a first protective cover. An annular slide rail is installed on the first protective cover, and a second protective cover is installed on the annular slide rail. The second protective cover is sleeved on the outside of the first protective cover, and a plurality of rolling elements are installed on the second protective cover. The plurality of rolling elements move along the inside of the annular slide rail.

[0006] The first protective cover is equipped with an annular slide rail, and the annular slide rail is equipped with a second protective cover. The second protective cover is sleeved on the outside of the first protective cover, and a plurality of rolling elements are installed on the second protective cover. The plurality of rolling elements move along the inside of the annular slide rail.

[0007] In one or more embodiments of this utility model, the annular slide rail is fixedly connected to the first protective cover, and the two ends of the annular slide rail are on the same plane as the two ends of the first protective cover.

[0008] In one or more embodiments of this utility model, the rolling element includes a pair of rollers, the annular slide rail has a rolling surface inside, the pair of rollers cooperate with the rolling surface, and the distance between the two sides inside the annular slide rail cooperates with the distance between the outer sides of the pair of rollers.

[0009] In one or more embodiments of this utility model, a connecting shaft is connected between a pair of rollers, the connecting shaft passing through a second protective cover, and the pair of rollers are located on the inner and outer sides of the second protective cover.

[0010] In one or more embodiments of this utility model, when one end of the second protective cover is on the same plane as one end of the first protective cover, the other end of the second protective cover is also on the same plane as the other end of the first protective cover.

[0011] In one or more embodiments of this utility model, a pair of second connecting plates are fixedly connected to the side of the second protective cover away from the roller.

[0012] In one or more embodiments of this utility model, a plurality of springs are installed on the second connecting plate, and the plurality of springs are compression springs.

[0013] In one or more embodiments of this utility model, one end of the spring is fixedly connected to the second connecting plate, and the other end is fixedly connected to the first connecting plate, the first connecting plate and the second connecting plate cooperating with each other.

[0014] In one or more embodiments of this utility model, a cleaning block is connected to the first connecting plate, and the cleaning block is a hard sponge block.

[0015] In one or more embodiments of this utility model, the side of the first connecting plate that contacts the cleaning block is provided with barbs, and the side of the cleaning block that contacts the first connecting plate is provided with a velvety surface, wherein the velvety surface and the barbs cooperate with each other.

[0016] Compared with the prior art, the beneficial effect of this utility model is that an extended and retractable annular protective cover is installed on the outer side of the upper shell of the circular saw blade. During the carrying and transportation of the hydraulic circular saw, the circular saw blade can be wrapped and protected, making it convenient to carry and transport. Attached Figure Description

[0017] Figure 1 This is a first structural diagram of a hydraulic circular saw according to an embodiment of the present invention;

[0018] Figure 2 This is a second structural diagram of a hydraulic circular saw according to one embodiment of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a third structural diagram of a hydraulic circular saw according to one embodiment of the present invention;

[0021] Figure 5 This is a fourth structural diagram of a hydraulic circular saw in one embodiment of the present invention;

[0022] Figure 6 This is a part drawing of a hydraulic circular saw according to one embodiment of the present invention.

[0023] Explanation of key figure labels:

[0024] 1-Frame, 101-Retrieval rack, 102-Hydraulic pipe, 103-Start handle, 2-Saw disc, 3-First protective cover, 301-Circular slide rail, 302-Roller, 3021-Connecting shaft, 4-Second protective cover, 5-Cleaning block, 501-First connecting plate, 502-Spring, 503-Second connecting plate. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] refer to Figures 1-4 As shown, this utility model provides a hydraulic circular saw, including a frame 1, a saw disc 2, and a first protective cover 3. A pick-up frame 101 is connected to the frame 1, and the pick-up frame 101 is equipped with a pick-up part. The hydraulic circular saw is operated by holding the pick-up frame 101 with one hand and the frame 1 with the other hand to perform cuts at various angles. A hydraulic pipe 102 installed on the frame 1 is used for inputting and outputting hydraulic fluid, driving the rotation of the circular saw through high-pressure fluid. A start handle 103 installed on the frame 1 is used to start and stop the hydraulic circular saw, controlling the start and stop of the operation. The saw disc 2 is a detachable circular disc; replacing the saw disc allows for cutting materials such as wood, aluminum, and fiberglass. Different saw discs can be used to adapt to different cutting needs, such as horizontal and vertical cuts. The first protective cover 3 is fixedly connected to the frame 1, and the opening angle of the first protective cover 3 is greater than 180 degrees. It is used to shield personnel from foreign objects generated during cutting operations.

[0027] A ring slide rail 301 is installed on the first protective cover 3. The ring slide rail 301 is fixedly connected to the first protective cover 3. A second protective cover 4 is installed on the ring slide rail 301. The two ends of the ring slide rail 301 are on the same plane as the two ends of the first protective cover 3.

[0028] refer to Figures 3-4As shown, when one end of the second protective cover 4 is on the same plane as one end of the first protective cover 3, the other end of the second protective cover 4 is also on the same plane as the other end of the first protective cover 3. That is, the opening angle of the first protective cover 3 is equal to the opening angle of the annular slide rail 301 and the opening angle of the second protective cover 4. When the annular slide rail 301 is installed on the first protective cover 3, its sides will not extend beyond the sides of the first protective cover 3. The second protective cover 4 is fitted onto the outside of the first protective cover 3. Several rolling elements are installed on the second protective cover 4, and these rolling elements move along the inside of the annular slide rail 301. The annular slide rail 301 is fixedly connected to the first protective cover 3. Simultaneously, the rolling elements installed on the second protective cover 4 move along the inside of the annular slide rail 301, meaning the second protective cover 4 can move along the annular slide rail 301 on the first protective cover 3. Because the first protective cover 3 and the annular slide rail 301 are coaxial, the second protective cover 4 can move around the first protective cover 3.

[0029] refer to Figures 3-4 As shown, the rolling element includes a pair of rollers 302. A rolling surface is provided inside the annular slide rail 301. The rollers 302 cooperate with the rolling surface, and are in close contact with it. The rollers 302 can move along the rolling surface inside the annular slide rail 301. Because the rollers 302 are mounted on the second protective cover 4, the second protective cover 4 can move along the curvature of the rolling surface of the annular slide rail 301. The distance between the two sides inside the annular slide rail 301 matches the distance between the outer sides of the pair of rollers 302, and a connecting shaft 3021 connects the pair of rollers 302. Therefore, the pair of rollers 302 and the connecting shaft 3021 will not disengage from the annular slide rail 301 during movement. The connecting shaft 3021 passes through the second protective cover 4. A pair of rollers 302 are located on the inner and outer sides of the second protective cover 4. The annular slide rail 301 is coaxial with the first protective cover 3. The curvature of each position in the annular slide rail 301 is the same. The rollers 302 will not deviate in curvature during the movement, that is, the second protective cover 4 will not get stuck when it moves around the first protective cover 3.

[0030] refer to Figures 2-4 As shown, a locking device is provided at one end of the annular slide rail 301 near the roller 302 when the second protective cover 4 is fully extended and covers the saw disc 2. This device limits the roller 302 and prevents the second protective cover 4 from detaching from the annular slide rail 301 due to excessive extension. Simultaneously, a removable stop is provided at the other end of the annular slide rail 301. When the second protective cover 4 is installed on the annular slide rail 301, the stop is removed. After installation, the stop is reinserted into the annular slide rail 301 to limit the roller 302 and prevent the second protective cover 4 from detaching from the annular slide rail 301 due to excessive sliding.

[0031] The height of the two side plates on the second protective cover 4 is greater than the depth of the cutting edge of the saw blade. When the second protective cover 4 slides along the first protective cover 3 via the rollers 302 and extends completely, it can work with the first protective cover 3 to completely cover the cutting edge of the saw blade 2, achieving the effect of protecting the cutting edge and making it easy to carry. At the same time, when cutting is required, the second protective cover 4 can be slid in the opposite direction. The second protective cover 4 will rotate around the axis of the first protective cover 3 and eventually be completely stored on the outer side above the first protective cover 3, realizing the retraction of the second protective cover 4 without affecting the operation of the hydraulic circular saw. At the same time, the friction between the multiple rollers 302 and the annular slide rail 301 is sufficient to keep the second protective cover 4 stationary after extension and retraction.

[0032] refer to Figures 3-4 As shown, a cleaning component is installed on the side of the second protective cover 4 away from the roller 302. This component is used to clean and maintain the saw disc 2 as the second protective cover 4 extends and surrounds the saw disc 2. After using the hydraulic circular saw disc, the second protective cover 4 is opened. The cleaning component on the second protective cover 4 can wipe the surface of the saw disc 2 and can also be oiled. This allows the cleaning component to lubricate and maintain the saw disc 2 during the opening of the second protective cover 4, facilitating long-term storage and extending the service life of the saw disc 2.

[0033] refer to Figures 5-6 As shown, a pair of second connecting plates 503 are fixedly connected inside the second protective cover 4. Several springs 502 are installed on the second connecting plates 503. The springs 502 are compression springs. During the cleaning of the circular saw disc, the springs 502 are compressed towards the second connecting plates 503. When the second protective cover 4 is retracted, the first protective cover 3 also compresses the springs 502 towards the second connecting plates 503, thus achieving the storage of the cleaning components. The connection points on the first protective cover 3 are rounded to prevent scratching or obstruction of the cleaning components during the retraction of the second protective cover 4, facilitating the retraction and storage of the cleaning components. One end of the spring 502 is fixedly connected to the second connecting plate 503, and the other end is fixedly connected to the first connecting plate 501. The first connecting plate 501 and the second connecting plate 503 cooperate with each other. The first connecting plate 501 and the second connecting plate 503 have the same shape and are located at both ends of the spring 502.

[0034] refer to Figures 5-6As shown, a cleaning block 5 is connected to the first connecting plate 501. The cleaning block 5 is a hard sponge block. The surface of the hard sponge block is relatively hard, so it will not be stuck by the blades on the saw disc 2 when it contacts the saw disc 2. At the same time, under the traction of the spring 502, even if blockage occurs, the cleaning block 5 can be released from the saw disc 2 after a small range of shaking. The side of the first connecting plate 501 that contacts the cleaning block 5 is provided with barbs, and the side of the cleaning block 5 that contacts the first connecting plate 501 is provided with a velvet surface. The velvet surface and the barbs work together, that is, the connection between the cleaning block 5 and the first connecting plate 501 is a Velcro fit, which facilitates quick replacement of the dirty or damaged cleaning block 5. The cleaning block 5 can clean the surface of the saw disc 2 and can also be oiled. During the extension and retraction of the second protective cover 4, the oil-soaked cleaning block 5 can clean the saw disc 2 while applying lubricant, thus maintaining the saw disc 2.

[0035] In practical use, the hydraulic circular saw is operated by holding the frame 1 and the pick-up rack 101. The saw disc 2 is started by pressing the start handle 103. After the operation is completed, when it is necessary to carry the hydraulic circular saw, the second protective cover 4 on the outer side of the first protective cover 3 can be manually pulled downwards. The rolling element fixedly connected to the second protective cover 4 rolls along the inside of the annular slide rail 301. The annular slide rail 301, the first protective cover 3, and the second protective cover 4 are all coaxial. That is, the second protective cover 4 can be extended and retracted along the direction of the first protective cover 3 through the annular slide rail 301. When the second protective cover 4 is fully extended, it surrounds the blade of the saw disc 2 inside, increasing the safety of carrying it. When the second protective cover 4 is fully retracted above the first protective cover 3, it does not affect the normal operation of the saw disc 2.

[0036] The second protective cover 4 is equipped with a cleaning component. During the extension and retraction of the second protective cover 4, the cleaning block 5 wraps around the saw disc 2 and cleans the surface of the saw disc 2's blade. Alternatively, the cleaning block 5 can be oiled to clean and maintain the saw disc 2 while it is being cleaned, thus extending the service life of the saw disc 2 and making it easier to store.

[0037] Compared with the prior art, the beneficial effect of this utility model is that an extended and retractable annular protective cover is installed on the outer side of the upper shell of the circular saw blade. During the carrying and transportation of the hydraulic circular saw, the circular saw blade can be wrapped and protected, making it convenient to carry and transport.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic circular saw comprising a frame, a saw disc and a first protective cover, characterized in that, The first protective cover is provided with an annular slide rail, the second protective cover is installed on the annular slide rail and is sleeved outside the first protective cover, a plurality of rolling elements are installed on the second protective cover, and the plurality of rolling elements are displaced along the inside of the annular slide rail.

2. A hydraulic disc saw according to claim 1, characterized in that The annular slide rail is fixedly connected to the first protective cover, and the two ends of the annular slide rail are in the same plane as the two ends of the first protective cover.

3. A hydraulic disc saw according to claim 2, wherein, The rolling element comprises a pair of rollers, the inside of the annular slide rail is provided with a rolling surface, and the pair of rollers are matched with the rolling surface, and the distance between the two sides of the inside of the annular slide rail is matched with the distance between the two sides of the outside of the pair of rollers.

4. A hydraulic disc saw according to claim 3, wherein, A connecting shaft is connected between the pair of rollers, the connecting shaft penetrates through the second protective cover, and the pair of rollers are divided into the inside and the outside of the second protective cover.

5. A hydraulic disc saw according to claim 1, wherein, When the one end of the second protective cover is in the same plane as the one end of the first protective cover, the other end of the second protective cover is also in the same plane as the other end of the first protective cover.

6. A hydraulic disc saw according to claim 1, wherein, The inside of the second protective cover, away from the side of the roller, is fixedly connected to a pair of second connecting plates.

7. A hydraulic disc saw according to claim 6, wherein, A plurality of springs are installed on the second connecting plate, and the plurality of springs are compression springs.

8. A hydraulic disc saw according to claim 7, wherein, One end of the spring is fixedly connected to the second connecting plate, the other end is fixedly connected to a first connecting plate, and the first connecting plate and the second connecting plate are matched.

9. A hydraulic disc saw according to claim 8, wherein, The first connecting plate is connected to a cleaning block, and the cleaning block is a hard sponge block.

10. A hydraulic disc saw according to claim 9, wherein, The side of the first connecting plate, in contact with the cleaning block, is provided with a hook, the side of the cleaning block, in contact with the first connecting plate, is provided with a velvet surface, and the velvet surface and the hook are matched with each other.

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