A load-bearing device mounted on an electric cylinder

Abstract

This utility model provides a load-bearing device installed on an electric cylinder, belonging to the field of electric cylinder technology. It includes a fixed support mechanism installed on the cylinder body and a movable support mechanism installed on the cylinder shaft. The fixed support mechanism is fixed to the cylinder body by a first locking frame and a second locking frame, which are mounted on a guide rail. Rollers are installed at both ends of the movable support mechanism, and the rollers roll in cooperation with the guide rail. The movable support mechanism is sleeved on the cylinder shaft and moves synchronously with it. By bearing the radial force of the cylinder shaft and transmitting the force to the fixed support mechanism, the movable support mechanism reduces the stress on the cylinder shaft, decreases wear on the internal slider and deformation of the steel balls, extends the service life of the electric cylinder, and reduces maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of electric cylinder technology, and in particular to a load-bearing device installed on an electric cylinder. Background Technology

[0002] An electric cylinder is a modular product that integrates a servo motor and a lead screw, enabling the conversion of the servo motor's rotary motion into the linear motion of the shaft, thus achieving high-precision control.

[0003] Electric cylinders are designed primarily to withstand axial forces. However, in actual production line use, electric cylinders may experience radial load operation. Prolonged load operation will cause wear on the internal slider and deformation of the steel balls, leading to equipment shutdown and production stagnation. Utility Model Content

[0004] This invention addresses the problems of internal slider wear and steel ball deformation caused by radial load operation in existing electric cylinders. It provides a load-bearing device mounted on the electric cylinder, comprising a fixed support mechanism mounted on the cylinder body and a movable support mechanism mounted on the cylinder shaft. The fixed support mechanism is fixed to the cylinder body by a first locking bracket and a second locking bracket, which are mounted on a guide rail. Rollers are mounted at both ends of the movable support mechanism, rolling in cooperation with the guide rail. The movable support mechanism is fitted onto the cylinder shaft and moves synchronously with it. By bearing the radial force of the cylinder shaft and transmitting the force to the fixed support mechanism, the movable support mechanism reduces the stress on the cylinder shaft, thereby decreasing wear on the internal slider and deformation of the steel balls, extending the service life of the electric cylinder, and reducing maintenance costs.

[0005] The technical solution adopted in this utility model is:

[0006] A load-bearing device mounted on an electric cylinder, comprising:

[0007] A fixed support mechanism mounted on the cylinder body of the electric cylinder and a movable support mechanism mounted on the shaft of the electric cylinder;

[0008] The fixed support mechanism includes:

[0009] Guide rail and a first locking bracket and a second locking bracket disposed on the guide rail;

[0010] The activity support organization includes at least:

[0011] A load-bearing plate having a through hole for the shaft to pass through, the load-bearing plate being sleeved with the shaft through the through hole; and a pair of rollers installed at the lower end of the load-bearing plate and rollingly engaging with the guide rail;

[0012] When the shaft extends or retracts, the movable support mechanism can move along the path defined by the guide rail by means of the roller.

[0013] Preferably, both the first locking frame and the second locking frame are U-shaped structures and have the same dimensions.

[0014] Preferably, threaded holes are machined on the side plates of both the first locking frame and the second locking frame, and adjusting bolts are installed in the threaded holes.

[0015] Preferably, two fixing holes are machined on the side plate of the second locking frame, and the fixing holes are located near the opening of the second locking frame.

[0016] Preferably, the guide rail is L-shaped, with different lengths on the two side plates.

[0017] Preferably, the side plate with a longer guide rail is provided with a waist-shaped hole of a certain length.

[0018] Preferably, the fixing hole coincides with the waist-shaped hole, and the second locking bracket adjusts its position on the guide rail through the waist-shaped hole.

[0019] Preferably, the bearing plate is provided with three sets of adjustment components at the through hole, and the angle between each pair of adjustment components is 120°. When the adjustment component is pressed against the shaft, the movable support mechanism can move in accordance with the extension or retraction of the shaft.

[0020] Preferably, the adjustment component includes:

[0021] The slide rail is welded to the load-bearing plate;

[0022] The bracket has a U-shaped structure, with side plates welded to the outer surfaces of both sides of the slide rail;

[0023] A slider, having threaded holes machined on it, is installed in the slide rail;

[0024] A servo motor is mounted on the bracket.

[0025] Preferably, the servo motor shaft is fixedly connected to the screw, the screw passes through the threaded hole, and the rotation of the servo motor drives the screw to rotate, causing the slider to slide back and forth in the slide rail.

[0026] The beneficial effects of this utility model are:

[0027] The fixed support mechanism is secured to the electric cylinder body via a first locking bracket and a second locking bracket, which are mounted on a guide rail. The movable support mechanism has rollers at both ends, which roll in cooperation with the guide rail. The movable support mechanism is fitted onto the electric cylinder's shaft and moves synchronously with it. By bearing the radial force of the electric cylinder shaft and transmitting it to the fixed support mechanism, the movable support mechanism reduces the stress on the electric cylinder shaft, thereby decreasing wear on the internal slider and deformation of the steel balls, extending the electric cylinder's service life, and reducing maintenance costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the working of the load-bearing device in this utility model.

[0030] Figure 2 This is a structural schematic diagram of the fixed support mechanism in this utility model.

[0031] Figure 3 This is a schematic diagram of the movable support mechanism in this utility model.

[0032] Figure 4 This is a partially enlarged view of the adjustment component at point A in the movable support mechanism of this utility model.

[0033] Marked in the image:

[0034] 100: Electric cylinder; 200: Load-bearing device;

[0035] 210: Fixed support mechanism; 211: First locking frame; 212: Adjusting bolt; 213: Second locking frame; 214: Guide rail; 215: Fixing bolt; 216: Fixing nut;

[0036] 2111: First threaded hole; 2131: Second threaded hole; 2132: Fixing hole; 2141: Oval hole;

[0037] 220: Movable support mechanism; 221: Load-bearing plate; 222: Adjustment component; 223: Connecting plate; 224: Roller; 225: Connecting shaft; 226: Rib plate;

[0038] 2211: Notch; 2221: Slide rail; 2222: Bracket; 2223: Servo motor; 2224: Slider. Detailed Implementation

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0041] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0042] This embodiment provides a load-bearing device 200 installed on an electric cylinder 100 to withstand the radial force exerted on the electric cylinder 100 during operation, thereby extending the service life of the electric cylinder 100 and reducing maintenance costs. The load-bearing device 200 includes a fixed support mechanism 210 and a movable support mechanism 220. The various components of the load-bearing device 200 are described in detail below.

[0043] like Figure 2 As shown, the fixed support mechanism 210 includes a first locking frame 211, an adjusting bolt 212, a second locking frame 213, a guide rail 214, a fixing bolt 215, and a fixing nut 216. The first locking frame 211 has a U-shaped structure with two side plates of equal length. A first threaded hole 2111 passes through both side plates of the first locking frame 211 and is used to install the adjusting bolt 212. The second locking frame 213 also has a U-shaped structure and the same dimensions as the first locking frame 211. A second threaded hole 2131 and a fixing hole 2132 are machined on the two side plates of the second locking frame 213, respectively. The second threaded hole 2131 is close to the top of the second locking frame 213, while the fixing hole 2132 is away from the top of the second locking frame 213. The fixing hole 2132 is a circular through hole used to install the fixing bolt 215. Two fixing holes 2132 are arranged on the side plate of the second locking bracket 213. The two fixing holes 2132 are located on the same horizontal line and are spaced apart by a certain distance. The height of the second threaded hole 2131 from the top of the second locking bracket 213 is the same as the height of the first threaded hole 2111 from the top of the first locking bracket 211.

[0044] The guide rail 214 is roughly L-shaped, with two side plates facing each other. The two side plates are of unequal length, and the longer side plate has a waist-shaped hole 2141 of a certain length machined at its center for mounting the second locking bracket 213 and adjusting the position or length of the fixing support mechanism 210. By adjusting the position of the second locking bracket 213 in the waist-shaped hole 2141, the fixing support mechanism 210 can accommodate electric cylinders 100 of different lengths. The waist-shaped hole 2141 is parallel to the bottom plane of the guide rail 214. The two guide rails 214 are respectively welded to the outer sides of the two side plates of the first locking bracket 211. The longer side plate of the guide rail 214 is in contact with the outer surface of the first locking bracket 211, with the bottom of the guide rail 214 facing upwards. The opening of the first locking bracket 211 faces downwards and is welded to the guide rail 214, thus the guide rail 214 is located below the first threaded hole 2111.

[0045] Then, with the opening of the second locking bracket 213 facing downwards and the fixing hole 2132 aligned with the oblong hole 2141, a fixing bolt 215 is inserted into the combined structure of the fixing hole 2132 and the oblong hole 2141. Next, a fixing nut 216 is fitted to the other end of the combined structure of the fixing hole 2132 and the oblong hole 2141. After adjusting the position of the second locking bracket 213, the fixing nut 216 is tightened. Finally, an adjusting bolt 212 is fitted into the first threaded hole 2111 and the second threaded hole 2131. The adjusting bolt is tightened so that the end of the adjusting bolt 212 abuts against the outer shell of the electric cylinder 100, thus fixing the fixed support mechanism 210 onto the electric cylinder 100.

[0046] Figure 3 This is a structural diagram of the movable support mechanism 220 in the load-bearing device 200. The movable support mechanism 220 includes a load-bearing plate 221, an adjusting component 222, a connecting plate 223, rollers 224, a connecting shaft 225, and stiffening plates 226. The load-bearing plate 221 has a symmetrical structure with a circular through-hole machined at its center. The diameter of the through-hole is much larger than the diameter of the shaft of the electric cylinder 100. The through-hole is used to fit the load-bearing plate 221 onto the shaft of the electric cylinder 100. Below the circular through-hole, the load-bearing plate 221 has a notch 2211 to allow the relatively long side plate of the guide rail 214 to pass during movement. The two sides of the load-bearing plate 221 are welded to the connecting plate 223, which has two mounting holes machined on the same horizontal line. The stiffening plate 226 is welded at the connection between the load-bearing plate 221 and the connecting plate 223. It is located on the side of the circular through hole away from the center of the load-bearing plate 221 and perpendicular to the load-bearing plate 221 and the connecting plate 223, and is used to strengthen the structural strength.

[0047] The roller 224 has a through hole machined in its center, and a bearing is installed inside the through hole. The connecting shaft 225 is cylindrical in shape, with a flange formed circumferentially at one end and threads machined at the other end. The roller 224 is mounted on the outside of the connecting plate 223. The through hole of the roller 224 is aligned with the mounting hole on the connecting plate 223, and then the connecting shaft 225 is inserted into the combination structure of the through hole and the mounting hole. The connecting shaft 225 passes through the bearing in the roller 224, and the flanged end is installed in the through hole of the roller 224, with the flange fitting against the bearing in the roller 224. The threaded end of the connecting shaft 225 extends to the other side of the connecting plate 223, and then a nut is fitted onto the connecting shaft 225 to fix the roller 224 to the connecting plate 223, allowing it to rotate around the connecting shaft 225.

[0048] Depend on Figure 3 It can be seen that three adjustment components 222 are installed on the load-bearing plate 221, and the offset angle between each pair is the same, which is 120°.

[0049] Figure 4 This is a partially enlarged view of the adjustment component 222 at point A in the movable support mechanism 220. The adjustment component 222 includes a slide rail 2221, a bracket 2222, a servo motor 2223, and a slider 2224. The slide rail 2221 is a rectangular tube of a certain length, with a groove machined on one side surface for the slider 2224 to slide through. The groove connects to the cavity inside the slide rail 2221. The surface of the slide rail 2221 without the groove is welded to the support plate 221. The bracket 2222 is roughly U-shaped, with a flange formed on one side of its bottom. A through hole is machined at the center of the flange, and threaded holes are machined around the through hole. The two side plates of the bracket 2222 are welded to the outer surfaces of the two sides of the slide rail 2221, and the flange at the bottom of the bracket 2222 is away from the support plate 221.

[0050] The slider 2224 is T-shaped, with its wider end installed inside the slide rail 2221, and its narrower end machined with a threaded hole that coincides with the through hole on the flange of the bracket 2222. The surface of the slider 2224 that contacts the shaft of the electric cylinder 100 is machined into a concave arc, and an anti-slip material is applied to the concave arc to prevent slippage when the slider 2224 presses against the shaft of the electric cylinder 100.

[0051] The shaft of the servo motor 2223 is fixedly connected to the screw. The shaft of the servo motor 2223 passes through the through hole of the bottom flange of the bracket 2222, thereby allowing the screw to pass through the threaded hole of the slider 2224. The servo motor 2223 drives the screw to rotate, causing the slider 2224 to reciprocate on the screw, thus adapting to the shafts of the electric cylinder 100 with different diameters. The servo motor 2223 is fixed to the bracket 2222 by bolts fitting into the threaded hole on the bracket 2222.

[0052] When using the load-bearing device 200, the through hole on the load-bearing plate 221 of the movable support mechanism 220 must first be fitted onto the front end of the electric cylinder 100 shaft. Then, the three servo motors 2223 are started, and the control program controls the simultaneous rotation of the three servo motors 2223. The screw, fixedly connected to the shaft of the servo motor 2223, also rotates synchronously. The rotation of the screw causes the three sliders 2224 installed in the slide rail 2221 to move simultaneously towards the electric cylinder 100 shaft. The concave surface of the slider 2224 contacts the surface of the electric cylinder 100 shaft and gradually presses against it. Because the three adjusting components 222 are distributed at 120° and move synchronously, the center of the through hole on the load-bearing plate 221 gradually coincides with the center of the electric cylinder 100.

[0053] Next, adjust the position of the fixed support mechanism 210 so that the rollers 224 on both sides of the movable support mechanism 220 are placed inside the guide rails 214 on both sides of the fixed support mechanism 210 and in contact with the bottom of the guide rails 214. Finally, tighten the four adjusting bolts 212 on the fixed support mechanism 210 so that the ends of the adjusting bolts 212 abut against the outer shell of the electric cylinder 100. Thus, the fixed support mechanism 210 is fixed on the electric cylinder 100, and the load-bearing device 200 is installed.

[0054] The slider 2224, under the action of the screw, presses against the shaft of the electric cylinder 100. The concave surface of the slider 2224 is coated with an anti-slip material, generating significant friction. This causes the shaft of the electric cylinder 100 to move the movable support mechanism 220 within the guide rail 214 of the fixed support mechanism 210. Rollers 224 are installed on both sides of the movable support mechanism 220, reducing frictional resistance within the guide rail 214 and allowing it to move rapidly along with the shaft of the electric cylinder 100.

[0055] When the shaft of the electric cylinder 100 is subjected to radial force, the shaft will transmit the force to the slider 2224, and then to the adjusting assembly 222. Since the adjusting assembly 222 is fixedly connected to the support plate 221, the force is then transmitted to the support plate 221, and thus to the entire movable support mechanism 220.

[0056] The movable support mechanism 220 contacts the guide rail 214 via rollers 224, and the guide rail 214 is rigidly connected to the first locking frame 211 and the second locking frame 213. Therefore, the movable support mechanism 220 transmits force to the guide rail 214, and further to the entire fixed support mechanism 210, so that the entire fixed support mechanism 210 bears the radial force acting on the shaft of the electric cylinder 100, while the shaft of the electric cylinder 100 bears less force.

[0057] The four adjusting bolts 212 of the fixed support mechanism 210 abut against the outer shell of the electric cylinder 100, thereby generating friction to counteract the force borne by the fixed support mechanism 210 from the electric cylinder 100. This reduces wear on the internal slider and deformation of the steel balls of the electric cylinder 100, extends the service life of the electric cylinder 100, and reduces maintenance costs.

[0058] The above embodiments are merely a more detailed description of the present utility model. For those skilled in the art, modifications or equivalent substitutions can still be made to the technical solutions in the foregoing embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model patent.

Claims

1. A force bearing device mounted on an electrical cylinder, characterized in that, include: A fixed support mechanism mounted on the cylinder body of the electric cylinder and a movable support mechanism mounted on the shaft of the electric cylinder; The fixed support mechanism includes: Guide rail and a first locking bracket and a second locking bracket disposed on the guide rail; The activity support organization includes at least: A load-bearing plate having a through hole for the shaft to pass through, the load-bearing plate being sleeved with the shaft through the through hole; and a pair of rollers installed at the lower end of the load-bearing plate and rollingly engaging with the guide rail; When the shaft extends or retracts, the movable support mechanism can move along the path defined by the guide rail by means of the roller.

2. The force transfer device of claim 1, wherein Both the first locking frame and the second locking frame are U-shaped structures and have the same dimensions.

3. The force transfer device of claim 2, wherein, Both the first locking frame and the second locking frame have threaded holes machined on their side plates, and adjusting bolts are installed in the threaded holes.

4. The load-bearing device according to claim 3, characterized in that, The second locking frame has two fixing holes machined on its side plate, and the fixing holes are located near the opening of the second locking frame.

5. The load-bearing device according to claim 4, characterized in that, The guide rail is L-shaped, with different lengths on the two side plates.

6. The force transfer device of claim 5, wherein, The longer side plate of the guide rail is provided with a waist-shaped hole of a certain length.

7. The force transfer device of claim 6, wherein, The fixing hole coincides with the waist-shaped hole, and the second locking bracket adjusts its position on the guide rail through the waist-shaped hole.

8. The force transfer device of claim 1, wherein, Three sets of adjustment components are provided at the through hole of the load-bearing plate. The angle between each pair of adjustment components is 120°. When the adjustment component is pressed against the shaft, the movable support mechanism can move in accordance with the extension or retraction of the shaft.

9. The force transfer device of claim 8, wherein, The adjustment component includes: The slide rail is welded to the load-bearing plate; The bracket has a U-shaped structure, with side plates welded to the outer surfaces of both sides of the slide rail; A slider, having threaded holes machined on it, is installed in the slide rail; A servo motor is mounted on the bracket.

10. The force transfer device of claim 9, wherein, The servo motor's shaft is fixedly connected to the screw, which passes through the threaded hole. The rotation of the servo motor drives the screw to rotate, causing the slider to slide back and forth within the slide rail.

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