Linear electric cylinder with cooling function

Abstract

The utility model discloses a linear type electric cylinder with a cooling function, which comprises a driving box body, a cooling device and a cooling device, the driving shell is located in the driving box body, a driving piece is installed in the driving shell, and the driving shell communicates with the liquid inlet through a fourth connector; a screw rod assembly is arranged in the cylinder barrel, and the screw rod assembly is connected with the driving piece; the two ends of the cylinder barrel are provided with a first adapter and a second adapter respectively, the first adapter and the second adapter are both communicated with the cylinder barrel, the first adapter is communicated with the driving shell through a first pipeline, and a liquid outlet is formed in the second adapter. Cooling liquid can enter from the liquid inlet, sequentially flows through the fourth connector, the interior of the driving shell, the first pipeline, the first adapter, the interior of the cylinder barrel and the second adapter and then flows out from the liquid outlet, the cooling liquid flows through the whole electric cylinder, the whole electric cylinder can be cooled, and the service life of the electric cylinder can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cylinders, in particular to a linear electric cylinder with a cooling function. Background Art

[0002] The main power components of the electric cylinder include the motor, screw and piston rod. The motor drives the screw to rotate, and the rotation of the screw is converted into the linear motion of the piston rod. The whole process is converted into linear reciprocating motion through rotational friction motion. When the electric cylinder works for a long time, these motion processes will generate too much heat. If the heat is not dissipated in time, it will affect the service life of the electric cylinder. The existing heat dissipation of the electric cylinder is mainly concentrated on the screw part, while ignoring the heat dissipation of the motor. In actual use, it is impossible to effectively dissipate the heat of the entire electric cylinder. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing heat dissipation method only dissipates heat locally in the electric cylinder.

[0004] To this end, the utility model provides a linear electric cylinder with a cooling function, which can cool down the electric cylinder as a whole.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a linear electric cylinder with a cooling function, comprising: a driving box body, on which a liquid inlet is provided; a driving shell, which is located in the driving box body, a driving member is installed in the driving shell, and the driving shell is connected to the liquid inlet through a fourth joint; a cylinder barrel, in which a screw rod assembly is provided, and the screw rod assembly is connected to the driving member; a first adapter and a second adapter are respectively provided at both ends of the cylinder barrel, the first adapter and the second adapter are both connected to the cylinder barrel, the first adapter is connected to the driving shell through a first pipe, and the second adapter is provided with a liquid outlet.

[0006] Furthermore, the cylinder barrel is provided with a channel, and two ends of the channel are respectively connected to the first adapter and the second adapter.

[0007] Furthermore, the drive housing is provided with a first joint and a second joint, the first joint is connected to one end of the first pipe, and the second joint is connected to the fourth joint.

[0008] Furthermore, a third joint is installed on the first adapter, and the third joint is connected to the other end of the first pipeline.

[0009] Furthermore, the driving box body includes: a main box body, a front box cover and a rear box cover, the front box cover and the rear box cover are respectively connected to the front and rear ends of the main box body, the liquid inlet is arranged on the main box body, and the first pipe runs through the front box cover.

[0010] Furthermore, it also includes: a protective cover, which is arranged on the first pipe located outside the driving box.

[0011] Furthermore, a bearing assembly is provided between the first adapter and the front box cover, and the bearing assembly is sleeved on the screw assembly.

[0012] Furthermore, a piston and a piston rod assembly are sleeved on the screw rod assembly, and the piston is fixedly connected to the piston rod assembly.

[0013] Furthermore, it also includes: a front end cover, the front end cover is connected to the cylinder barrel, the second adapter is located between the cylinder barrel and the front end cover, and the piston rod assembly passes through the front end cover.

[0014] Furthermore, temperature sensors are installed on the drive housing and the inner wall of the cylinder.

[0015] Furthermore, the inner cavity of the drive housing is connected to an external cooling fan.

[0016] The beneficial effect of the utility model is that the coolant can enter from the liquid inlet, flow through the first pipeline, the interior of the drive housing, the second pipeline, the first adapter, the interior of the cylinder, the second adapter in sequence, and then flow out from the liquid outlet. The coolant flows through the entire electric cylinder, which can cool the electric cylinder as a whole, which is beneficial to extending the service life of the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the linear electric cylinder of the utility model.

[0019] Figure 2 It is a cross-sectional view of the linear electric cylinder of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the liquid inlet and the liquid outlet of the utility model.

[0021] In the figure: 1, drive housing; 2, drive housing; 3, drive member; 4, first pipeline; 5, cylinder; 6, screw assembly; 7, first adapter; 8, second adapter; 9, fourth joint; 10, protective cover; 11, bearing assembly; 12, piston; 13, piston rod assembly; 14, front end cover; 101, liquid inlet; 102, main housing; 103, front box cover; 104, rear box cover; 21, first joint; 22, second joint; 51, channel; 71, third joint; 81, liquid outlet; 111, bearing seat; 112, bearing; 113, bearing inner sleeve; 114, bearing pressure sleeve; 115, bearing pressure cover; 116, locking nut; 1031, first through hole; 141, second through hole. DETAILED DESCRIPTION

[0022] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0023] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figures 1 to 3As shown, the linear electric cylinder with cooling function of the utility model comprises: a driving box body 1, a driving shell 2 and a cylinder barrel 5, the driving box body 1 is provided with a liquid inlet 101, the driving shell 2 is located in the driving box body 1, a driving member 3 is installed in the driving shell 2, the driving shell 2 is connected with the liquid inlet 101 through a fourth joint 9, a screw assembly 6 is provided in the cylinder barrel 5, the screw assembly 6 is connected with the driving member 3, a first adapter 7 and a second adapter 8 are respectively provided at both ends of the cylinder barrel 5, the first adapter 7 and the second adapter 8 are both connected with the cylinder barrel 5, the first adapter 7 is connected with the driving shell 2 through a first pipe 4, and a liquid outlet 81 is provided on the second adapter 8.

[0026] In other words, when the coolant enters from the liquid inlet 101, it can enter the interior of the drive housing 2 through the fourth joint 9, and the coolant can cool the drive member 3 (for example, a motor). When the drive housing 2 is filled with coolant, the coolant can enter the first adapter 7 through the first pipe 4, and then enter the cylinder 5, and can cool the screw assembly 6, and finally flow out from the liquid outlet 81 on the second adapter 8. The coolant flows through the entire electric cylinder, and can cool the entire electric cylinder, which is beneficial to extending the service life of the electric cylinder.

[0027] Specifically, the cylinder 5 is provided with a channel 51, and the two ends of the channel 51 are respectively connected to the first adapter 7 and the second adapter 8. There are multiple channels 51, and the multiple channels 51 are evenly distributed along the circumference of the cylinder. The first adapter 7 and the second adapter 8 are both provided with holes for communicating with the channel 51. The hole on the first adapter 7 is connected to the first pipe 4, and the hole on the second adapter 8 is connected to the liquid outlet 81. Therefore, the coolant enters the hole of the first adapter 7 through the first pipe 4, then enters the channel 51, then enters the hole of the second adapter 8, and finally flows out from the liquid outlet 81.

[0028] For example, the drive housing 2 is provided with a first joint 21 and a second joint 22, the first joint 21 is connected to one end of the first pipe 4, and the second joint 22 is connected to the fourth joint 9. The first adapter 7 is provided with a third joint 71, and the third joint 71 is connected to the other end of the first pipe 4. The first pipe 4 and the fourth joint 9 are staggered in position, and the first joint 21 and the second joint 22 are also staggered in position. The drive housing 1 includes: a main housing 102, a front housing cover 103 and a rear housing cover 104, the front housing cover 103 and the rear housing cover 104 are respectively connected to the front and rear ends of the main housing 102, the liquid inlet 101 is provided on the main housing 102, and the first pipe 4 passes through the front housing cover 103. The linear electric cylinder also includes: a protective cover 10, and the protective cover 10 is provided on the first pipe 4 located outside the drive housing 1. That is, a part of the first pipe 4 is located inside the drive housing 1, and another part of the first pipe 4 is located outside the drive housing 1, and the first pipe 4 located outside the drive housing 1 is protected by the protective cover 10.

[0029] For example, a bearing assembly 11 is provided between the first adapter 7 and the front box cover 103, and the bearing assembly 11 is sleeved on the screw assembly 6. The bearing assembly 11 includes: a bearing seat 111, a bearing 112, a bearing inner sleeve 113, a bearing press sleeve 114 and a bearing cover 115. The bearing inner sleeve 113 is sleeved on the rear end of the screw assembly 6, the bearing 112 is sleeved on the bearing inner sleeve 113, the bearing seat 111 is sleeved on the bearing 112, the bearing press sleeve 114 is sleeved on the bearing inner sleeve 113 and is located at the rear side of the bearing 112, and the bearing cover 115 is connected to the front end of the bearing seat 111. A locking nut 116 is also provided on the rear side of the bearing press sleeve 114. The bearing seat 111 is located between the front box cover 103 and the first adapter 7. When the driving member 3 rotates, the screw assembly 6 is driven to rotate, and the bearing inner sleeve 113 will rotate with the screw assembly 6. The front box cover 103 is also provided with a first through hole 1031 , into which lubricating oil can be injected to lubricate the bearing 112 .

[0030] For example, the piston 12 and the piston rod assembly 13 are sleeved on the screw assembly 6, and the piston 12 and the piston rod assembly 13 are fixedly connected. The linear electric cylinder also includes: a front end cover 14, the front end cover 14 is connected to the cylinder barrel 5, the second adapter 8 is located between the cylinder barrel 5 and the front end cover 14, and the piston rod assembly 13 passes through the front end cover 14. The screw assembly 6 includes a screw and a nut, but when the screw rotates, it can be converted into a linear movement of the nut. The piston 12 and the piston rod assembly 13 are both installed on the nut, thereby realizing the linear movement of the piston 12 and the piston rod assembly 13. A second through hole 141 is opened on the front end cover 14, and lubricating oil can be injected into the second through hole 141 to lubricate the components in the cylinder barrel 5.

[0031] For example, a temperature sensor (not shown in the figure) can also be installed on the inner wall of the drive housing 2 and the cylinder 5. The temperature sensor is used to monitor the temperature change inside the electric cylinder, so as to facilitate the regulation of the flow rate and circulation frequency of the coolant for better cooling. For example, the inner cavity of the drive housing 2 can also be connected to an external cooling fan, and the airflow generated by the rotation of the fan can take away the heat generated by the drive member 3.

[0032] In summary, the linear electric cylinder of the utility model has a more compact overall structure through structural improvement; the coolant can enter from the liquid inlet 101, flow through the fourth joint 9, the interior of the drive housing 2, the first pipeline 4, the first adapter 7, the interior of the cylinder 5, the second adapter 8 in sequence, and then flow out from the liquid outlet 81. The coolant flows through the entire electric cylinder, which can cool the electric cylinder as a whole, and can also cool the electric cylinder as a whole, which is beneficial to extending the service life of the electric cylinder.

[0033] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A linear electric cylinder with cooling function, characterized in that: include: A driving housing (1), wherein the driving housing (1) is provided with a liquid inlet (101); A drive housing (2), the drive housing (2) being located inside the drive housing (1), a drive member (3) being installed inside the drive housing (2), and the drive housing (2) being connected to the liquid inlet (101) via a fourth joint (9); A cylinder barrel (5), wherein a screw assembly (6) is arranged in the cylinder barrel (5), and the screw assembly (6) is connected to the driving member (3); A first adapter (7) and a second adapter (8) are respectively provided at both ends of the cylinder (5); the first adapter (7) and the second adapter (8) are both connected to the cylinder (5); the first adapter (7) is connected to the drive housing (2) via a first pipe (4); and the second adapter (8) is provided with a liquid outlet (81).

2. The linear electric cylinder with cooling function according to claim 1, characterized in that: The cylinder (5) is provided with a channel (51), and two ends of the channel (51) are respectively connected to the first adapter (7) and the second adapter (8).

3. The linear electric cylinder with cooling function according to claim 1, characterized in that: The drive housing (2) is provided with a first joint (21) and a second joint (22), the first joint (21) being connected to one end of the first pipeline (4), and the second joint (22) being connected to a fourth joint (9).

4. The linear electric cylinder with cooling function according to claim 3, characterized in that: A third joint (71) is installed on the first adapter (7), and the third joint (71) is connected to the other end of the first pipeline (4).

5. The linear electric cylinder with cooling function according to claim 1, characterized in that: The driving housing (1) comprises: a main housing (102), a front housing cover (103) and a rear housing cover (104); the front housing cover (103) and the rear housing cover (104) are respectively connected to the front and rear ends of the main housing (102); the liquid inlet (101) is arranged on the main housing (102); and the first pipe (4) passes through the front housing cover (103).

6. The linear electric cylinder with cooling function according to claim 5, characterized in that: Also includes: A protective cover (10) is provided on the first pipe (4) located outside the drive housing (1).

7. The linear electric cylinder with cooling function according to claim 5, characterized in that: A bearing assembly (11) is provided between the first adapter (7) and the front box cover (103), and the bearing assembly (11) is sleeved on the screw assembly (6).

8. The linear electric cylinder with cooling function according to claim 1, characterized in that: The screw rod assembly (6) is sleeved with a piston (12) and a piston rod assembly (13), and the piston (12) and the piston rod assembly (13) are fixedly connected.

9. The linear electric cylinder with cooling function according to claim 8, characterized in that: Also includes: A front end cover (14), the front end cover (14) is connected to the cylinder barrel (5), the second adapter (8) is located between the cylinder barrel (5) and the front end cover (14), and the piston rod assembly (13) passes through the front end cover (14).

10. The linear electric cylinder with cooling function according to claim 1, characterized in that: Temperature sensors are installed on the inner walls of the drive housing (2) and the cylinder barrel (5).

11. The linear electric cylinder with cooling function according to claim 1, characterized in that: The inner cavity of the drive housing (2) is in communication with an external cooling fan.

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