CN217030641U - Portal frame with liftable crossbeam - Google Patents
Portal frame with liftable crossbeam Download PDFInfo
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- CN217030641U CN217030641U CN202123359752.1U CN202123359752U CN217030641U CN 217030641 U CN217030641 U CN 217030641U CN 202123359752 U CN202123359752 U CN 202123359752U CN 217030641 U CN217030641 U CN 217030641U
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Abstract
The utility model relates to a portal frame with a liftable beam. The portal frame also comprises a lifting device for driving the cross beam to ascend and descend in the vertical direction, the lifting device comprises a driving device, a transmission rod, a pair of screw rods and an adjusting block, the upper ends of the screw rods are connected with an output shaft of the driving device through the transmission rod, and the adjusting block is sleeved on the screw rods; the pair of screw rods are respectively arranged at two ends of the cross beam, and the screw rods are in threaded connection with the adjusting blocks; the two ends of the transmission rod are provided with first bevel gears, the upper ends of the pair of screw rods are provided with second bevel gears, and the first bevel gears are meshed with the second bevel gears. According to the portal frame, the screw and the adjusting block are arranged between the cross beam and the driving motor, so that the lifting height of the cross beam is convenient to adjust, and the precision is controllable. Through setting up the transfer line for the both sides screw rod can synchronous revolution, thereby make crossbeam both ends can go up and down in step, with low costs, easy maintenance.
Description
Technical Field
The utility model provides a portal frame with a liftable beam, which is used for detecting automobile parts.
Background
With the development of the automobile field, the requirements for the safety of automobiles are gradually increased. Therefore, the demand for testing parts of automobiles is gradually increasing. However, when testing the automobile parts, the pressure, tension or fatigue endurance test of the parts is usually performed by using the state of the parts in the driving process of the simulated vehicle as a standard. In general, a test head needs to be hoisted in a test, so that a lifting portal frame needs to be adopted.
The existing portal frame can move in the up and down directions and is mainly divided into three types, one type is moved up and down by a motor and a steel wire rope, and the portal frame is mainly used for heavy industrial factories and building construction. The second portal frame is a pure mechanical type, and the height is adjusted by manual disassembly and assembly. The third is that the motor drives the beam to move up and down, but the motors are needed on both sides, and a servo motor or a fine control device is needed to synchronize the two motors, so that the cost is high, and the motor is easy to damage and has high maintenance and repair costs.
The first portal frame is difficult to accurately control the moving position of the first portal frame and is not suitable for testing automobile parts. The second portal frame can only move a designed distance in each movement, and stepless adjustment of the distance cannot be realized. The third portal frame is high in cost and easy to damage. Therefore, a portal frame which is convenient to move up and down, high in adjustment precision, low in cost and easy to maintain is needed to meet the test requirements of automobile parts.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a portal frame with a liftable crossbeam.
The technical scheme adopted by the utility model is as follows:
the portal frame comprises a pair of supports which are vertically arranged on the left and the right, and a cross beam which is arranged between the pair of supports in a liftable manner, and further comprises a lifting device for driving the cross beam to ascend and descend in the vertical direction, wherein the lifting device comprises a driving device, a transmission rod which is coaxially and fixedly connected with an output shaft of the driving device, a pair of screw rods which are respectively arranged on the left side and the right side of the portal frame, and a pair of adjusting blocks which are respectively in sliding connection with the pair of supports and are respectively in threaded connection with the pair of screw rods; the two end parts of the cross beam are respectively connected with a pair of adjusting blocks; the two ends of the transmission rod are coaxially and fixedly provided with first bevel gears, the upper ends of the pair of screw rods are coaxially and fixedly provided with second bevel gears, and the first bevel gears are meshed with the second bevel gears in a one-to-one correspondence mode.
Preferably, a pair of supporting plates which are distributed up and down are fixedly arranged on the inner side of each bracket, and the upper end and the lower end of each screw rod are respectively connected with the pair of supporting plates in a rotating manner.
Preferably, the upper end of the screw rod penetrates through the supporting plate positioned above and is fixed with the second bevel gear.
Preferably, at least one guide rod is fixedly arranged between the pair of support plates positioned on the same side, the guide rod penetrates through the adjusting block, and the adjusting block is in sliding connection with the guide rod.
Preferably, the extension direction of the screw coincides with the extension direction of the bracket.
Preferably, the guide bar extends in the same direction as the bracket.
Preferably, the side of the adjusting block facing the cross beam is provided with a groove, and the end of the cross beam is accommodated in the groove and is rotatably and detachably connected with the adjusting block.
Preferably, a cross frame is erected at the upper ends of the pair of brackets, the driving device is fixedly connected to one end of the cross frame, a fixing piece is fixedly arranged at the other end of the cross frame, one end of the transmission rod is connected with an output shaft of the driving device, and the other end of the transmission rod is rotatably connected with the fixing piece.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the portal frame, the screw and the adjusting block in threaded connection with the screw are arranged between the cross beam and the driving motor, so that the lifting height of the cross beam is convenient to adjust, and the precision is controllable; meanwhile, the transmission rod is arranged between the driving motor and the screw rods, so that the screw rods on the two sides can rotate synchronously, the two ends of the cross beam can lift synchronously, and the use convenience of the portal frame is improved; low cost and easy maintenance.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a schematic view of the overall structure of an embodiment of the present invention.
FIG. 2 is an enlarged schematic view of the structure A in the embodiment shown in FIG. 1
Fig. 3 is an enlarged schematic view of the structure B of the embodiment shown in fig. 1.
Fig. 4 is an exploded view of the structure in the embodiment shown in fig. 1.
Fig. 5 is a schematic structural view of the turning device in the embodiment shown in fig. 1.
Wherein the reference numerals are as follows:
110: a support; 120: a cross frame; 121: a fixing member; 122: a support bracket; 130: a cross beam; 210: a screw; 211: a second bevel gear; 220: an adjusting block; 230: a transmission rod; 231: a second bevel gear; 240: a drive device; 250: a support plate; 260: a guide bar; 310: a support frame; 320: a screw structure; 330: a connecting rod; 340: a turntable; 350: a pointer.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present application provides a gantry with a liftable cross beam 130, as shown in fig. 1.
The gantry with the liftable crossbeam 130 comprises a pair of brackets 110 and the crossbeam 130 capable of sliding up and down relative to the brackets 110.
Referring to fig. 1 to 4, the pair of brackets 110 are vertically disposed at left and right sides, respectively, the beam 130 is disposed between the pair of brackets 110, and left and right end portions of the beam 130 are slidably connected to the brackets 110. Preferably, in order to enhance the stability of the pair of brackets 110, a cross frame 120 is provided at the upper ends of the pair of brackets 110, and both ends of the cross frame 120 are fixedly connected to the upper ends of the pair of brackets 110, respectively.
A lifting device for driving the cross beam 130 to lift is arranged between the end of the cross beam 130 and the bracket 110, and the lifting rod device comprises a driving device 240, a transmission rod 230, a pair of screw rods 210 and an adjusting block 220. The pair of screws 210 are rotatably disposed inside the pair of brackets 110 in a one-to-one correspondence manner, and a pair of support plates 250 is fixedly disposed inside each bracket 110. The supporting plates 250 are respectively disposed at the upper and lower portions of the inner side of the same supporting frame 310, and the screw 210 is disposed between the supporting plates 250 and rotatably connected to the supporting plates 250. Of the pair of support plates 250 on the same side, the support plate 250 on the lower side constitutes a support with the screw 210. And the upper end of the screw 210 is connected to the driving rod 230 through the supporting plate 250 located at the upper side. Further, the adjusting block 220 is sleeved on the screw rod 210 and is in threaded connection with the screw rod 210. When the screw 210 rotates, the adjusting block 220 ascends or descends. The height adjustment precision of the adjusting block 220 can be adjusted through the thread pitch of the screw 210, and the thread pitch adjustment can be selected according to actual requirements in the using process, which is not limited in the present application.
Preferably, at least one guide rod 260 is fixedly disposed between the pair of support plates 250 located on the same side, and the guide rod 260 passes through the adjustment block 220 and is slidably connected with the adjustment block 220. Wherein, the extending direction of the guide rod 260 is consistent with the screw 210, and the gravity center axis of the guide rod 260 is parallel to the gravity center axis of the screw 210. The guide bar 260 serves to define the moving direction of the adjusting block 220 so that the adjusting block 220 can move only up and down without displacement in the horizontal direction.
The driving device 240 is driven by the driving rod 230 to the pair of screws 210. Specifically, the driving rod 230 is a horizontally disposed rod member, the extending direction of which is consistent with the extending direction of the cross beam 130, and the driving rod 230 is rotatably disposed above the cross frame 120. The transmission rod 230 is provided with first bevel gears 231 at both ends thereof, and the pair of screws 210 are provided with second bevel gears 211 at upper ends thereof, wherein the first bevel gears 231 are respectively engaged with the second bevel gears 211 in a one-to-one correspondence. The output shaft of the driving device 240 is connected to the transmission rod 230 to rotate the transmission rod 230. When the transmission rod 230 rotates, the first bevel gear 231 and the second bevel gear 211 are engaged to drive the pair of screws 210 to rotate synchronously, so as to avoid a time difference when the pair of screws 210 rotate.
Further, the driving device 240 is fixedly connected to one end of the cross frame 130, and the other end of the cross frame 130 is fixedly provided with an "L" shaped fixing member 121. The transmission rod 230 has one end connected to an output shaft of the driving device 240 and the other end rotatably connected to the fixing member 121. Specifically, the fixing member 121 has a first side portion and a second side portion, the first side portion is fixed to the cross frame 120, and the second side portion is rotatably connected to the transmission rod 230 through a bearing. Preferably, a support bracket 122 for supporting the transmission rod 230 is disposed at the middle of the cross frame 120, and the support bracket 122 is connected to the transmission rod 230 through a bearing, so as to reduce the friction coefficient between the support bracket 122 and the transmission rod 230.
Preferably, the adjusting block 220 is rotatably connected to the cross beam 130, and a turning device 300 is disposed at one end of the cross beam 130, so that the cross beam 130 of the gantry can rotate about its own axis as a rotation axis. That is, the beam 130 may be horizontally flipped to increase the utility of the gantry. Specifically, the turning device 300 includes a support frame 310 fixed to the adjusting block 220, a screw mechanism 320 rotatably disposed inside the support frame 310, and a turntable 340 driven by the screw mechanism 320 through a connecting rod 330. The turntable 340 is disposed at an end of the beam 130, and a through hole is formed at a center of the turntable 340. The cross member 130 is inserted into the adjusting block 220 after passing through the rotary plate 340, and is rotatably and detachably connected with the adjusting block 220. The nut 322 in the screw mechanism 320 is in transmission with the turntable 340 through the connecting rod 330, one end of the connecting rod 330 is rotatably connected with the nut 322 in the screw mechanism 320 through a horizontally arranged rotating shaft, and the other end is connected with the edge of the turntable 340 through a horizontally arranged rotating shaft. When the bolt 321 in the screw rod mechanism 320 rotates, the nut 322 in the screw rod mechanism 320 is driven to ascend or descend; the lifting of the nut 322 is transmitted through the connecting rod 330 to drive the rotating disc 340 to rotate clockwise or counterclockwise, so that the beam 130 fixed with the rotating disc 340 can be horizontally turned. Alternatively, the turntable 340 may be disposed at both ends of the cross member 130, and the turnover device 300 may be disposed at one end of the cross member 130.
Preferably, the dial 340 is provided with an angle scale on a side facing the adjustment block 220, and the adjustment block 220 is fixedly provided with a pointer 350, and the pointer 350 points to the scale, so that an operator can conveniently observe the rotation angle of the dial 340. When the dial 340 is rotated, the pointer 350 fixed to the adjustment block 220 is not rotated, and thus, the scale indicated by the pointer 350 is changed.
It should be noted that in the description of the orientation of the present application, the state of the gantry in use is referred to, and the "inside" of the bracket is referred to the bracket itself, the direction toward the other bracket is the inside, and the direction away from the other bracket is the outside, so as to facilitate the description of the present invention and simplify the description, but it does 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 should not be construed as limiting the present invention.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
according to the portal frame, the screw and the adjusting block in threaded connection with the screw are arranged between the cross beam and the driving motor, so that the lifting height of the cross beam is convenient to adjust, and the precision is controllable; meanwhile, the transmission rod is arranged between the driving motor and the screw rods, so that the screw rods on the two sides can rotate synchronously, the two ends of the cross beam can lift synchronously, the use convenience of the portal frame is improved, and the portal frame is low in cost and easy to maintain.
The above-mentioned embodiments are provided only for illustrating the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention by this, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. A portal frame with a liftable crossbeam comprises a pair of supports (110) vertically arranged at the left and right, and a crossbeam (130) arranged between the supports (110) in a liftable manner, and is characterized by further comprising a lifting device for driving the crossbeam (130) to ascend and descend in the vertical direction, wherein the lifting device comprises a driving device (240), a transmission rod (230) coaxially and fixedly connected with an output shaft of the driving device (240), a pair of screw rods (210) respectively arranged at the left side and the right side of the portal frame, and a pair of adjusting blocks (220) respectively connected with the supports (110) in a sliding manner and respectively in threaded connection with the screw rods (210); two end parts of the cross beam (130) are respectively connected with the pair of adjusting blocks (220); the two ends of the transmission rod (230) are coaxially and fixedly provided with first bevel gears (231), the upper ends of the pair of screw rods (210) are coaxially and fixedly provided with second bevel gears (211), and the first bevel gears (231) are meshed with the second bevel gears (211) in a one-to-one correspondence mode.
2. The portal frame with the liftable beam according to claim 1, wherein a pair of supporting plates (250) distributed up and down are fixedly arranged on the inner side of each bracket (110), and the upper end and the lower end of each screw rod (210) are respectively rotatably connected with the pair of supporting plates (250).
3. The gantry with a liftable and lowerable crossbeam according to claim 2, wherein the upper end of the screw (210) penetrates through the supporting plate (250) above and is fixed to the second bevel gear (211).
4. The portal frame with the liftable and lowerable crossbeam according to claim 2, wherein at least one guide rod (260) is fixedly disposed between the pair of support plates (250) on the same side, the guide rod (260) penetrates through the adjusting block (220), and the adjusting block (220) is slidably connected to the guide rod (260).
5. The gantry with liftable and lowerable crossbeam according to claim 1, wherein the screw (210) extends in the same direction as the support (110).
6. The gantry with liftable and lowerable crossbeam according to claim 4, wherein said guide bar (260) extends in the same direction as said support (110).
7. The portal frame with the liftable and lowerable crossbeam according to claim 1, wherein the side of the adjusting block (220) facing the crossbeam (130) is recessed, and an end of the crossbeam (130) is received in the recess and rotatably and detachably connected to the adjusting block (220).
8. The portal frame with the liftable beam as claimed in claim 1, wherein a cross frame (120) is erected at the upper ends of the pair of brackets (110), the driving device (240) is fixedly connected to one end of the cross frame (120), a fixing member (121) is fixedly arranged at the other end of the cross frame (120), one end of the transmission rod (230) is connected with an output shaft of the driving device (240), and the other end of the transmission rod is rotatably connected with the fixing member (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123359752.1U CN217030641U (en) | 2021-12-28 | 2021-12-28 | Portal frame with liftable crossbeam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123359752.1U CN217030641U (en) | 2021-12-28 | 2021-12-28 | Portal frame with liftable crossbeam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217030641U true CN217030641U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123359752.1U Active CN217030641U (en) | 2021-12-28 | 2021-12-28 | Portal frame with liftable crossbeam |
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| Country | Link |
|---|---|
| CN (1) | CN217030641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117169257A (en) * | 2023-11-01 | 2023-12-05 | 上海超群检测科技股份有限公司 | X-ray imaging device |
-
2021
- 2021-12-28 CN CN202123359752.1U patent/CN217030641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117169257A (en) * | 2023-11-01 | 2023-12-05 | 上海超群检测科技股份有限公司 | X-ray imaging device |
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