A silent double-layer hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses a silent double-layer hydraulic cylinder, wherein a protective mechanism is arranged on the outside of the hydraulic cylinder body, and the protective mechanism includes a second protective sleeve and a first protective sleeve arranged on the outside of the hydraulic cylinder body from front to back, and the outsides of the first protective sleeve and the second protective sleeve are both provided with protective pads, and the insides of the first protective sleeve and the second protective sleeve are both provided with sound insulation boards, and the insides of the sound insulation boards are respectively provided with a first sound insulation layer and a second sound insulation layer from left to right, and a sound insulation cavity is opened between the first sound insulation layer and the second sound insulation layer. The first sound insulation layer and the second sound insulation layer inside the sound insulation board of the utility model can achieve the purpose of double sound insulation for the hydraulic cylinder body, and the sound insulation effect can be improved through the sound insulation cavity, so that the hydraulic cylinder body has the purpose of silence, and at the same time, the sound insulation board can be embedded into the inside of the connecting hole through the positioning rod to achieve its positioning and installation, and has good practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a silent double-layer hydraulic oil cylinder. Background Art

[0002] A double-layer hydraulic cylinder is a special hydraulic cylinder structure, which consists of two or more pistons, one of which is located inside the other piston. Double-layer hydraulic cylinders are widely used in various mechanical equipment due to their high efficiency, flexibility and reliability. When the hydraulic cylinder is working, it will generate noise, which will affect the construction workers, so it is necessary to mute and reduce the noise of the hydraulic cylinder.

[0003] A Chinese patent discloses a noise-reducing hydraulic cylinder (authorization announcement number CN213870514U). This patented technology can effectively reduce noise, avoid noise pollution and nuisance to the public, and avoid noise affecting the physical and mental health of construction workers. It improves the reliability and convenience of using the hydraulic cylinder and is practical.

[0004] However, most of the existing hydraulic cylinders adopt a single-layer sound insulation method for noise reduction, which results in poor noise reduction effect and affects the surrounding staff. For example, the above-mentioned reference document adopts a single-layer sound insulation method. In actual application, the single-layer sound insulation effect is poor. When the noise is loud, it will still be transmitted to the outside and affect the surrounding staff. Therefore, those skilled in the art provide a silent double-layer hydraulic cylinder to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a silent double-layer hydraulic cylinder to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A silent double-layer hydraulic cylinder comprises a hydraulic cylinder body and an oil outlet pipe and an oil inlet pipe arranged in front of the hydraulic cylinder body from left to right, connecting seats are symmetrically arranged on both sides of the hydraulic cylinder body, and a protective mechanism is arranged on the outside of the hydraulic cylinder body, the protective mechanism comprises a second protective sleeve and a first protective sleeve arranged on the outside of the hydraulic cylinder body from front to back, the outsides of the first protective sleeve and the second protective sleeve are both provided with protective pads, the insides of the first protective sleeve and the second protective sleeve are both provided with sound insulation boards, the insides of the sound insulation boards are respectively provided with a first sound insulation layer and a second sound insulation layer from left to right, and sound insulation is opened between the first sound insulation layer and the second sound insulation layer.

[0008] As a further solution of the utility model: positioning pins are symmetrically arranged on the rear surface of the second protective sleeve near the first protective sleeve, and positioning holes that are matched with the positioning pins are opened on the front surface of the first protective sleeve.

[0009] As a further solution of the utility model: a connecting hole is opened on the outside of the positioning pin, bolts are symmetrically arranged on the outside of the first protective sleeve, and the ends of the bolts are embedded in the connecting hole and threadedly connected to the connecting hole.

[0010] As a further solution of the present invention: the radius of the first protective sleeve and the second protective sleeve are the same, and a fixing hole is opened on the outside of the second protective sleeve.

[0011] As a further solution of the utility model: positioning rods are symmetrically arranged on the outer side of the sound insulation board, and mounting holes that engage with the positioning rods are opened on the inner sides of the first protective sleeve and the second protective sleeve.

[0012] As a further solution of the present invention: the first sound insulation layer and the second sound insulation layer have the same thickness, and the first sound insulation layer and the second sound insulation layer are both made of sound insulation rock wool.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model can achieve the purpose of protecting the hydraulic cylinder body through the first protective cover and the second protective cover in the protective mechanism, and can improve its protective performance through the protective pad on the outside, so as to avoid the damage of the outside of the hydraulic cylinder body by external force and improve its service life. At the same time, the first protective cover and the second protective cover can be installed and disassembled by embedding the positioning pin into the positioning hole, which has good practicality.

[0015] 2. The first sound insulation layer and the second sound insulation layer inside the sound insulation board of the utility model can achieve the purpose of double sound insulation for the hydraulic cylinder body, and the sound insulation effect can be improved through the sound insulation cavity, so that the hydraulic cylinder body has the purpose of silence. At the same time, the sound insulation board can be embedded in the connection hole through the positioning rod to achieve its positioning installation, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a silent double-layer hydraulic cylinder;

[0017] Figure 2 It is a structural schematic diagram of a protective mechanism in a silent double-layer hydraulic cylinder;

[0018] Figure 3 The figure is a schematic diagram of the structure of a soundproof plate in a silent double-layer hydraulic cylinder.

[0019] In the figure: 1. hydraulic cylinder body; 11. oil outlet pipe; 12. oil inlet pipe; 2. connecting seat; 3. protection mechanism; 31. first protection cover; 32. second protection cover; 33. positioning hole; 34. positioning pin; 4. sound insulation board; 41. first sound insulation layer; 42. sound insulation cavity; 43. positioning rod; 431. mounting hole; 44. second sound insulation layer. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0021] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] Embodiment 1:

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the present embodiment proposes a silent double-layer hydraulic cylinder, comprising a hydraulic cylinder body 1 and an oil outlet pipe 11 and an oil inlet pipe 12 arranged in front of the hydraulic cylinder body 1 from left to right, a connecting seat 2 is symmetrically arranged on both sides of the hydraulic cylinder body 1, and a protective mechanism 3 is arranged on the outside of the hydraulic cylinder body 1, the protective mechanism 3 comprises a second protective sleeve 32 and a first protective sleeve 31 arranged on the outside of the hydraulic cylinder body 1 from front to back, the first protective sleeve 31 and the second protective sleeve 32 are both provided with protective pads on the outside, and the first protective sleeve 31 and the second protective sleeve 32 are both provided with sound insulation boards 4 on the inside, and the first sound insulation layer 41 and the second sound insulation layer 44 are respectively arranged inside the sound insulation board 4 from left to right, and a sound insulation cavity 42 is opened between the first sound insulation layer 41 and the second sound insulation layer 44. The setting can achieve the purpose of protecting the hydraulic cylinder body 1 by using the protective mechanism 3, and the sound insulation effect of the hydraulic cylinder body 1 can be improved by the first sound insulation layer 41 and the second sound insulation layer 44 inside the sound insulation board 4, so as to avoid excessive noise affecting the surrounding staff.

[0027] Embodiment 2:

[0028] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0029] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, a positioning pin 34 is symmetrically arranged on the rear surface of the second protective sleeve 32 near the position of the first protective sleeve 31, and a positioning hole 33 which is compatible with the positioning pin 34 is opened on the front surface of the first protective sleeve 31, and a connecting hole is opened on the outside of the positioning pin 34, and bolts are symmetrically arranged on the outside of the first protective sleeve 31, and the ends of the bolts are embedded in the connecting holes and threadedly connected to the connecting holes. This arrangement utilizes the positioning pin 34 to be embedded in the positioning hole 33 and threadedly connected to the connecting hole by the bolt, thereby facilitating the positioning and installation of the first protective sleeve 31 and the second protective sleeve 32, so as to achieve the purpose of protecting the hydraulic cylinder body 1.

[0030] like Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the radius of the first protective sleeve 31 and the second protective sleeve 32 are the same, and a fixing hole is opened on the outside of the second protective sleeve 32. This setting utilizes the opening of the fixing hole to facilitate the positioning and installation of the second protective sleeve 32 to the outside of the hydraulic cylinder body 1.

[0031] like Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, positioning rods 43 are symmetrically arranged on the outer side of the sound insulation board 4, and the inner sides of the first protective cover 31 and the second protective cover 32 are provided with mounting holes 431 which are engaged with the positioning rods 43. This arrangement utilizes the positioning rods 43 to be embedded in the interior of the mounting holes 431 to realize the installation and disassembly of the sound insulation board 4.

[0032] like Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, the first sound insulation layer 41 and the second sound insulation layer 44 have the same thickness, and the materials of the first sound insulation layer 41 and the second sound insulation layer 44 are both sound insulation rock wool. This arrangement utilizes the first sound insulation layer 41 and the second sound insulation layer 44 to achieve the purpose of double sound insulation for the hydraulic cylinder body 1, and has good practicality.

[0033] Embodiment 3:

[0034] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0035] Specifically, when the silent double-layer hydraulic cylinder is working / in use: first, the first protective sleeve 31 and the second protective sleeve 32 in the protective mechanism 3 are installed to the outside of the hydraulic cylinder body 1. During installation, the positioning pin 34 can be embedded into the positioning hole 33 and locked by bolts, thereby achieving the purpose of installing the first protective sleeve 31 and the second protective sleeve 32. In this way, the hydraulic cylinder body 1 can be protected by the first protective sleeve 31 and the second protective sleeve 32, and the protective pads on the outside of the first protective sleeve 31 and the second protective sleeve 32 can improve its protection effect and improve the service life of the hydraulic cylinder body 1. A sound insulation board 4 is also provided on the inner side of the first protective sleeve 31 and the second protective sleeve 32. The first sound insulation layer 41 and the second sound insulation layer 44 inside the sound insulation board 4 can achieve the purpose of double sound insulation for the hydraulic cylinder body 1, and the sound insulation cavity 42 can improve its sound insulation effect, so that the hydraulic cylinder body 1 has the purpose of being silent.

[0036] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A silent double-layer hydraulic cylinder, comprising a hydraulic cylinder body (1) and an oil outlet pipe (11) and an oil inlet pipe (12) arranged in front of the hydraulic cylinder body (1) from left to right, characterized in that: Connecting seats (2) are symmetrically arranged on both sides of the hydraulic cylinder body (1), and a protective mechanism (3) is arranged outside the hydraulic cylinder body (1), the protective mechanism (3) comprising a second protective sleeve (32) and a first protective sleeve (31) arranged outside the hydraulic cylinder body (1) from front to back, the first protective sleeve (31) and the second protective sleeve (32) are both provided with protective pads on the outside, the first protective sleeve (31) and the second protective sleeve (32) are both provided with sound insulation boards (4) on the inside, the first protective sleeve (31) and the second protective sleeve (32) are respectively provided with a first sound insulation layer (41) and a second sound insulation layer (44) inside the sound insulation board (4) from left to right, and a sound insulation cavity (42) is opened between the first sound insulation layer (41) and the second sound insulation layer (44).

2. A silent double-layer hydraulic cylinder according to claim 1, characterized in that: A positioning pin (34) is symmetrically arranged on the rear surface of the second protective sleeve (32) near the first protective sleeve (31), and a positioning hole (33) adapted to the positioning pin (34) is opened on the front surface of the first protective sleeve (31).

3. A silent double-layer hydraulic cylinder according to claim 2, characterized in that: A connection hole is provided on the outside of the positioning pin (34), bolts are symmetrically arranged on the outside of the first protective sleeve (31), and the ends of the bolts are embedded in the connection hole and threadedly connected to the connection hole.

4. A silent double-layer hydraulic cylinder according to claim 1, characterized in that: The first protective sleeve (31) and the second protective sleeve (32) have the same radius, and a fixing hole is provided on the outside of the second protective sleeve (32).

5. A silent double-layer hydraulic cylinder according to claim 1, characterized in that: Positioning rods (43) are symmetrically arranged on the outer side of the sound insulation board (4), and mounting holes (431) that engage with the positioning rods (43) are provided on the inner sides of the first protective sleeve (31) and the second protective sleeve (32).

6. A silent double-layer hydraulic cylinder according to claim 1, characterized in that: The first sound insulation layer (41) and the second sound insulation layer (44) have the same thickness, and the first sound insulation layer (41) and the second sound insulation layer (44) are both made of sound insulation rock wool.

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