Scraper blade device, telescopic boom and concrete wet spraying machine

Abstract

The utility model relates to the field of engineering machinery, and discloses a scraper device, a telescopic boom and a concrete wet spraying machine, the scraper device comprises a fixed seat, a movable seat and an elastic piece, the first end of the movable seat is hinged with the first end of the fixed seat, and the elastic piece is connected between the second end of the fixed seat and the second end of the movable seat. The scraping plate is fixedly connected to the movable base and extends in the direction from the first end to the second end of the movable base. The scraping plate device can be applied to a telescopic boom frame, the fixed seat is fixedly connected to the end of the basic boom, the scraping plate is made to abut against the outer side wall of the telescopic boom, in the retracting process of the telescopic boom, the scraping plate can stop scraping concrete on the telescopic boom, the concrete is prevented from entering a cavity of the basic boom, and when the telescopic boom deviates downwards, the scraping plate is not prone to falling off. And under the acting force of the elastic piece, the scraping plate can always abut against the outer side wall of the telescopic arm, the effect of preventing concrete from entering the inner cavity of the foundation arm is good, and reliability is high.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery, specifically relating to a scraper device, a telescopic boom, and a concrete wet spraying machine. Background Technology

[0002] Wet concrete spraying machines are widely used in concrete spraying operations in construction, tunneling, and other engineering projects. During operation, a common problem arises when the telescopic boom retracts, concrete on it is carried into the inner cavity of the base boom. Over time, this accumulation accelerates the wear of the slider inside the base boom, leading to wear and cracking of both the telescopic boom and the base boom. Therefore, a scraper is typically bolted to the end of the base boom, contacting the outer wall of the telescopic boom. When the telescopic boom retracts, the scraper prevents concrete from entering the cavity of the base boom. However, in practical applications, due to gravity or wear of the lower slider, the telescopic boom may shift downwards, creating a gap between its top surface and the upper scraper. Concrete can easily enter the cavity of the base boom through this gap. In other words, the existing scraper structure is ineffective and unreliable in preventing concrete from entering the cavity of the base boom. Utility Model Content

[0003] In view of the above-mentioned deficiencies or defects in the prior art, this utility model provides a scraper device, a telescopic boom, and a concrete wet spraying machine, which can effectively prevent concrete from being carried into the inner cavity of the base arm when the telescopic boom is retracted, with better effect and higher reliability.

[0004] To achieve the above objectives, this utility model provides a scraper device, comprising:

[0005] Fixed base;

[0006] A movable seat, wherein the first end of the movable seat is hinged to the first end of the fixed seat;

[0007] An elastic element is connected between the second end of the fixed seat and the second end of the movable seat, and is used to apply an elastic tension to the movable seat;

[0008] A scraper is fixedly connected to the movable seat and extends along the direction from the first end to the second end of the movable seat.

[0009] Optionally, the scraper is detachably connected to the movable seat.

[0010] Optionally, the fixed seat includes a fixed plate and a first connecting ear plate that are fixedly connected. The first connecting ear plate extends along the width direction of the fixed plate. The movable seat includes a movable plate and a second connecting ear plate that are fixedly connected. The second connecting ear plate extends along the width direction of the movable plate. The first end of the second connecting ear plate is hinged to the first end of the first connecting ear plate. The elastic element is connected between the second end of the second connecting ear plate and the second end of the first connecting ear plate. The scraper is fixedly connected to the movable plate and extends along the direction from the first end to the second end of the second connecting ear plate.

[0011] Optionally, the fixed seat includes two first connecting lugs, which are arranged at intervals along the length of the fixed plate. The movable seat includes two second connecting lugs, which are arranged at intervals along the length of the movable plate. The two second connecting lugs are located between the two first connecting lugs and are respectively hinged to the two first connecting lugs.

[0012] Optionally, the fixing base further includes a hinge shaft, which is fixedly connected between the first ends of the two first connecting lugs, and the first ends of the two second connecting lugs are sleeved on the hinge shaft and have a gap with the hinge shaft.

[0013] Optionally, the elastic element is a tension spring.

[0014] Optionally, the second end of the first connecting ear plate is provided with a first connecting hole, the second end of the second connecting ear plate is provided with a second connecting hole, one end of the tension spring is hooked on the first connecting hole, and the other end is hooked on the second connecting hole.

[0015] Optionally, the scraper is an isosceles trapezoidal plate structure, and its width gradually decreases along the direction from the first end to the second end of the movable seat.

[0016] This utility model also provides a telescopic boom, comprising:

[0017] Basic arm;

[0018] A telescopic arm, which is nested within the base arm;

[0019] In the aforementioned scraper device, the fixed base is fixedly connected to the end of the base arm, the scraper abuts against the outer wall of the telescopic arm, and the elastic element is hidden on the inner side of the scraper facing the telescopic arm.

[0020] This utility model also provides a concrete wet spraying machine, including the telescopic boom described above.

[0021] Through the above technical solution, the scraper device of this utility model can be applied to telescopic booms. The fixed seat is fixedly connected to the end of the base boom, and the scraper is pressed against the outer wall of the telescopic boom. With this configuration, during the retraction of the telescopic boom, the scraper can block and scrape away the concrete on the telescopic boom, preventing the concrete from entering the cavity of the base boom. In addition, the elastic element will continuously apply elastic tension to the movable seat. When the telescopic boom shifts downward, under the action of the elastic element, the scraper can always remain pressed against the outer wall of the telescopic boom without gaps, thus effectively preventing concrete from entering the cavity of the base boom with high reliability.

[0022] Other features and advantages of this invention will be described in detail in the following detailed embodiments section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the scraper device in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the scraper device applied to a telescopic boom in one embodiment of the present invention;

[0026] Figure 3 for Figure 2 Side sectional view of the scraper device applied to the telescopic boom.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Fixture

[0029] 11 Fixing plate 12 First connecting ear plate

[0030] 2 movable seats

[0031] 21 Movable plate 22 Second connecting ear plate

[0032] 3. Elastic components

[0033] 4 scraper

[0034] 5. Hinge shaft

[0035] 6. Basic Arm

[0036] 7 Telescopic boom Detailed Implementation

[0037] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] In this utility model, unless otherwise stated, directional terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. The directional terms "inner" and "outer" refer to the inside and outside of the outline of each component itself.

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] A first exemplary embodiment of this utility model provides a scraper device, as shown in the attached drawing. Figure 1 To be continued Figure 3 As shown, the scraper device includes:

[0042] Fixed base 1;

[0043] Movable seat 2, the first end of which is hinged to the first end of fixed seat 1;

[0044] The elastic element 3 is connected between the second end of the fixed seat 1 and the second end of the movable seat 2, and is used to apply an elastic tension to the movable seat 2.

[0045] Scraper 4 is fixedly connected to movable seat 2 and extends along the direction from the first end to the second end of movable seat 2.

[0046] The scraper device of this embodiment can be applied to a telescopic boom. The fixed seat 1 is fixedly connected to the end of the base boom, and the scraper 4 is pressed against the outer wall of the telescopic boom. With this configuration, during the retraction of the telescopic boom, the scraper 4 can block and scrape away the concrete on the telescopic boom, preventing the concrete from entering the cavity of the base boom. In addition, the elastic element 3 will continuously apply an elastic tension to the movable seat 2. When the telescopic boom moves downward, under the action of the elastic element 3, the scraper 4 can always remain pressed against the outer wall of the telescopic boom without gaps, thus effectively preventing concrete from entering the cavity of the base boom with high reliability.

[0047] In addition, the elastic element 3 is connected between the fixed seat 1 and the movable seat 2. In actual application, the elastic element 3 is hidden inside the scraper 4 facing the telescopic arm. In this way, it can avoid the situation where concrete accumulates on the elastic element 3 and causes the elastic element 3 to fail, thus effectively ensuring the service life of the scraper device.

[0048] In one embodiment, the scraper 4 is detachably connected to the movable seat 2. This arrangement facilitates the replacement of the scraper 4.

[0049] Specifically, the scraper 4 can be detachably fastened to the movable seat 2 by means of fasteners such as bolts.

[0050] In one embodiment, reference is made to the appendix. Figure 1 As shown, the fixed base 1 includes a fixed plate 11 and a first connecting ear plate 12 that are fixedly connected. The first connecting ear plate 12 extends along the width direction of the fixed plate 11. The movable base 2 includes a movable plate 21 and a second connecting ear plate 22 that are fixedly connected. The second connecting ear plate 22 extends along the width direction of the movable plate 21. The first end of the second connecting ear plate 22 is hinged to the first end of the first connecting ear plate 12. An elastic element 3 is connected between the second end of the second connecting ear plate 22 and the second end of the first connecting ear plate 12. The scraper 4 is fixedly connected to the movable plate 21 and extends along the direction from the first end to the second end of the second connecting ear plate 22.

[0051] In this embodiment, the first end of the movable seat 2 is hinged to the first end of the fixed seat 1 by hinged to the first end of the second connecting ear plate 22 and the first end of the first connecting ear plate 12.

[0052] Specifically, the fixing plate 11 and the first connecting ear plate 12 can be fixedly connected by welding or be an integrally formed structure. The fixing plate 11 can be fixedly connected to the end of the base arm by fasteners such as bolts.

[0053] Specifically, the scraper 4 is stacked on the movable plate 21 and fastened together by bolts or other fasteners.

[0054] In one embodiment, reference is made to the appendix. Figure 1 As shown, the fixed base 1 includes two first connecting lugs 12, which are spaced apart along the length of the fixed plate 11. The movable base 2 includes two second connecting lugs 22, which are spaced apart along the length of the movable plate 21. The two second connecting lugs 22 are located between the two first connecting lugs 12 and are hinged to each of the two first connecting lugs 12. This arrangement effectively ensures the connection strength between the movable base 2 and the fixed base 1.

[0055] Of course, in some other embodiments, the fixed base 1 may include three or more first connecting ear plates 12, and the multiple first connecting ear plates 12 are arranged at intervals along the length direction of the fixed plate 11. The movable base 2 may include three or more second connecting ear plates 22, and the multiple second connecting ear plates 22 are arranged at intervals along the length direction of the movable plate 21. The multiple second connecting ear plates 22 are respectively hinged to the multiple first connecting ear plates 12 in a one-to-one correspondence.

[0056] In one embodiment, reference is made to the appendix. Figure 1 As shown, the fixed base 1 also includes a hinge shaft 5, which is fixedly connected between the first ends of the two first connecting lugs 12. The first ends of the two second connecting lugs 22 are sleeved on the hinge shaft 5 and have a gap between them. This arrangement allows the movable base 2 to pivot relative to the fixed base 1 around the hinge shaft 5.

[0057] Specifically, one end of the hinge shaft 5 has an external thread and is connected to the first end of a first connecting ear plate 12 by a nut, and the other end passes through the first end of another first connecting ear plate 12 and is connected to a retaining plate. The retaining plate cooperates with the first connecting ear plate 12 to restrict the circumferential rotation of the hinge shaft 5.

[0058] In one embodiment, the elastic element 3 is a tension spring. Of course, in other embodiments, the elastic element 3 can also be other elastic elements with elastic tension.

[0059] In one embodiment, reference is made to the appendix. Figure 1 As shown, the second end of the first connecting ear plate 12 is provided with a first connecting hole, and the second end of the second connecting ear plate 22 is provided with a second connecting hole. One end of the tension spring is hooked onto the first connecting hole, and the other end is hooked onto the second connecting hole. This arrangement facilitates the assembly and disassembly of the tension spring.

[0060] Of course, in some other embodiments, the two ends of the tension spring can be fastened together with fasteners or welded to the second end of the first connecting ear plate 12 and the second end of the second connecting ear plate 22, respectively.

[0061] In one embodiment, reference is made to the appendix. Figure 1 To be continued Figure 3 As shown, the scraper 4 is an isosceles trapezoidal plate structure, and its width gradually decreases along the direction from the first end to the second end of the movable seat 2. With this arrangement, when the telescopic boom 7 is actually applied, multiple scraper devices can be arranged along the circumference of the telescopic boom, and the scrapers 4 of two adjacent scraper devices can be joined together to prevent a large amount of concrete from flowing into the inner cavity of the foundation boom from the gap between two adjacent scrapers.

[0062] A second exemplary embodiment of this utility model provides a telescopic boom, as shown in the attached figure. Figure 2 and attached Figure 3As shown, the telescopic boom includes:

[0063] Basic arm 6;

[0064] Telescopic arm 7 is nested within the base arm 6;

[0065] In the aforementioned scraper device, the fixed base 1 is fixedly connected to the end of the base arm 6, the scraper 4 presses against the outer wall of the telescopic arm 7, and the elastic element 3 is hidden inside the scraper 4 facing the telescopic arm 7.

[0066] Specifically, the telescopic boom may include multiple scraper devices, which are arranged circumferentially along the telescopic boom 7, and the scrapers 4 of two adjacent scraper devices engage with each other.

[0067] Obviously, the telescopic boom in this embodiment also has the technical effects of the scraper device described above.

[0068] A third exemplary embodiment of this utility model provides a concrete wet spraying machine, including the telescopic boom described above.

[0069] Clearly, the concrete wet spraying machine in this embodiment also possesses the technical effects of the telescopic boom described above.

[0070] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A scraper device, characterized in that, include: Fixed base (1); Movable seat (2), the first end of which is hinged to the first end of fixed seat (1); An elastic element (3) is connected between the second end of the fixed seat (1) and the second end of the movable seat (2) and is used to apply an elastic tension to the movable seat (2); Scraper (4), which is fixedly connected to the movable seat (2) and extends along the direction from the first end to the second end of the movable seat (2).

2. The scraper device according to claim 1, characterized in that, The scraper (4) is detachably connected to the movable seat (2).

3. The scraper device according to claim 1, characterized in that, The fixed seat (1) includes a fixed plate (11) and a first connecting ear plate (12) that are fixedly connected. The first connecting ear plate (12) extends along the width direction of the fixed plate (11). The movable seat (2) includes a movable plate (21) and a second connecting ear plate (22) that are fixedly connected. The second connecting ear plate (22) extends along the width direction of the movable plate (21). The first end of the second connecting ear plate (22) is hinged to the first end of the first connecting ear plate (12). The elastic element (3) is connected between the second end of the second connecting ear plate (22) and the second end of the first connecting ear plate (12). The scraper (4) is fixedly connected to the movable plate (21) and extends along the direction from the first end to the second end of the second connecting ear plate (22).

4. The scraper device according to claim 3, characterized in that, The fixed seat (1) includes two first connecting ear plates (12), which are spaced apart along the length of the fixed plate (11). The movable seat (2) includes two second connecting ear plates (22), which are spaced apart along the length of the movable plate (21). The two second connecting ear plates (22) are located between the two first connecting ear plates (12) and are respectively hinged to the two first connecting ear plates (12).

5. The scraper device according to claim 4, characterized in that, The fixed base (1) also includes a hinge shaft (5), which is fixedly connected between the first ends of the two first connecting ear plates (12). The first ends of the two second connecting ear plates (22) are sleeved on the hinge shaft (5) and have a gap with the hinge shaft (5).

6. The scraper device according to claim 3, characterized in that, The elastic element (3) is a tension spring.

7. The scraper device according to claim 6, characterized in that, The second end of the first connecting ear plate (12) is provided with a first connecting hole, and the second end of the second connecting ear plate (22) is provided with a second connecting hole. One end of the tension spring is hooked on the first connecting hole, and the other end is hooked on the second connecting hole.

8. The scraper device according to claim 1, characterized in that, The scraper (4) is an isosceles trapezoidal plate structure, and its width gradually decreases along the direction from the first end to the second end of the movable seat (2).

9. A telescopic boom, characterized in that, include: Basic arm (6); Telescopic arm (7), which is nested within the base arm (6); According to any one of claims 1 to 8, the fixed seat (1) is fixedly connected to the end of the base arm (6), the scraper (4) abuts against the outer side wall of the telescopic arm (7), and the elastic element (3) is hidden on the inner side of the scraper (4) facing the telescopic arm (7).

10. A concrete wet spraying machine, characterized in that, Including the telescopic boom as described in claim 9.

Images