Support

Abstract

The utility model relates to a support which comprises a base, a bearing mechanism, a lifting mechanism and a locking mechanism, and the base comprises an upper support and a lower support which are arranged at intervals in the height direction; the bearing mechanism comprises a supporting seat connected to the upper support, a pair of carrier rollers is arranged on the supporting seat, and the two carrier rollers are used for bearing a part to be supported and can move in the opposite directions or in the opposite directions. The lifting mechanism is connected between the upper support and the lower support and comprises a first supporting part and a second supporting part, the first supporting part is connected to the lower support, and the second supporting part is movably connected between the first supporting part and the upper support in the height direction; the locking mechanism is used for locking the first supporting part and the second supporting part in an unlockable mode. According to the technical scheme, the support can adjust the supporting height through the relative movement of the first supporting part and the second supporting part in the height direction, and can adaptively support to-be-supported pieces with different sizes through the opposite or opposite movement of the two carrier rollers, so that the support has wide applicability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of maintenance devices, and in particular, to a bracket. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices.

[0003] After a period of use, the steam turbine needs to be overhauled. During the overhaul of the steam turbine, the main shaft needs to be supported to facilitate comprehensive overhaul and maintenance. In the related art, the main shaft is generally supported by two relatively independent brackets, but the height of the bracket cannot be adjusted according to the diameter of the impeller on the main shaft, which makes the overhaul very laborious and there is a risk of height operation, which has certain limitations when used. Utility Model Content

[0004] The purpose of the present disclosure is to provide a bracket that can adjust the support height and has a wider applicability, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above object, the present disclosure provides a bracket, comprising:

[0006] A base, comprising an upper support and a lower support arranged at intervals in a height direction;

[0007] The supporting mechanism comprises a supporting seat connected to the upper support, wherein a pair of rollers are arranged on the supporting seat, the two rollers are used to support the member to be supported and the two rollers can move toward or away from each other;

[0008] a lifting mechanism connected between the upper support and the lower support, the lifting mechanism comprising a first support portion and a second support portion, the first support portion being connected to the lower support, and the second support portion being movably connected between the first support portion and the upper support in the height direction; and

[0009] The locking mechanism is used to unlockably lock the first supporting portion and the second supporting portion.

[0010] Optionally, the first support portion includes a support rod connected to the lower support, the second support portion includes an adjustment rod slidably connected to the support rod along the height direction, a sliding groove is formed on the support rod for the adjustment rod to slide and insert, and the locking mechanism includes a locking piece, which is used to penetrate one of the side walls of the support rod and enter the sliding groove to detachably abut the adjustment rod.

[0011] Optionally, the locking member includes a locking rod slidably inserted into the support rod, a ratchet is formed on one side of the adjusting rod close to the locking rod, and an end of the locking rod close to the adjusting rod has a pawl portion to cooperate and abut against the ratchet to limit the movement of the adjusting rod toward the lower support.

[0012] Optionally, the locking mechanism also includes a first connecting frame, a guide sleeve and an elastic member, the first connecting frame and the guide sleeve are connected to the support rod, the guide sleeve is used for the sliding insertion of the locking rod, the elastic member is connected between the locking rod and the guide sleeve, and / or the elastic member is connected between the locking rod and the first connecting frame.

[0013] Optionally, a pull ring is connected to the end of the locking rod away from the support rod, and a limit block is provided on the pull ring. The pull ring is used to drive the locking rod to move in a direction away from the support rod, and can stop the movement of the locking rod toward the support rod through the limit block.

[0014] Optionally, the locking mechanism also includes a second connecting frame connected to the first connecting frame on a side away from the support rod, the pull ring has an end connected to the locking rod and a lifting portion connected to the end, the end is passed through the second connecting frame, the limit block is arranged at the end, and an avoidance hole for the limit block to pass through is formed on the second connecting frame, and the limit block can abut against the side of the second connecting frame away from the first connecting frame.

[0015] Optionally, a limiting structure for stopping the limiting block is provided on a side of the second connecting frame away from the first connecting frame.

[0016] Optionally, a cavity is formed on the support seat, and a first screw and a second screw with opposite thread directions are rotatably connected between inner walls on opposite sides of the support seat forming the cavity, one end of the first screw away from the inner wall of the support seat forming the cavity is connected to one end of the second screw away from the inner wall of the support seat forming the cavity, the first screw and the second screw are each threadedly connected to a sliding seat, the two sliding seats are respectively connected to the two rollers, at least one side of the sliding seat contacts the inner wall of the support seat forming the cavity, and the first screw and / or the second screw are connected to a driving member.

[0017] Optionally, the bracket also includes a driving assembly, which includes a driving motor, a first support rod connected to the lower support, and a second support rod movably connected to the first support rod along the height direction, the first support rod is connected to a rack, and the output shaft of the driving motor is connected to a gear meshing with the rack.

[0018] Optionally, the lifting mechanisms are provided in plural numbers and are evenly arranged around the center circumference of the base.

[0019] Through the above technical solution, the bracket can change the height of the upper support and the supporting mechanism by moving the second supporting part relative to the first supporting part in the height direction, and can support the part to be supported by two rollers, and then lock the first supporting part and the second supporting part by the locking mechanism to adaptively support the parts to be supported at different heights. In addition, the two rollers can also move toward or away from each other to adaptively adjust the position for parts to be supported of different sizes. Therefore, the bracket can adjust the support height and supporting size, and has a wide applicability.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of a bracket provided in an exemplary embodiment of the present disclosure;

[0023] Figure 2 is a front view structural schematic diagram of a bracket provided in an exemplary embodiment of the present disclosure;

[0024] Figure 3 is a schematic cross-sectional structural diagram of a locking mechanism provided in an exemplary embodiment of the present disclosure;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of a supporting mechanism provided in an exemplary embodiment of the present disclosure.

[0026] Description of Reference Numerals

[0027] 1. Base; 11. Upper support; 12. Lower support; 2. Support mechanism; 21. Support seat; 211. Cavity; 22. Roller; 23. First screw; 24. Second screw; 25. Sliding seat; 26. Driving member; 3. Lifting mechanism; 31. First supporting part; 311. Support rod; 3111. Sliding groove; 32. Second supporting part; 321. Adjusting rod; 3211. Ratchet; 4. Locking mechanism Structure; 41. locking member; 411. locking rod; 4111. ratchet portion; 42. first connecting frame; 43. guide sleeve; 44. elastic member; 45. pull ring; 451. limit block; 452. end; 453. lifting portion; 46. second connecting frame; 461. avoidance hole; 5. driving assembly; 51. driving motor; 52. first support rod; 53. second support rod; 54. rack; 55. gear. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component; "far" and "near" refer to the distance and nearness of the corresponding component in space relative to another component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] The bracket in the exemplary embodiment of the present disclosure will be described below with reference to the accompanying drawings.

[0031] refer to Figures 1 to 4 The present invention provides a bracket, including a base 1, a supporting mechanism 2, a lifting mechanism 3 and a locking mechanism 4, wherein the base 1 includes an upper support 11 and a lower support 12 arranged at intervals along the height direction; the supporting mechanism 2 includes a support seat 21 connected to the upper support 11, and a pair of rollers 22 are arranged on the support seat 21, the two rollers 22 are used to support the supported member and the two rollers 22 can move toward or away from each other; the lifting mechanism 3 is connected between the upper support 11 and the lower support 12, and includes a first supporting part 31 and a second supporting part 32, the first supporting part 31 is connected to the lower support 12, and the second supporting part 32 is movably connected between the first supporting part 31 and the upper support 11 in the height direction; the locking mechanism 4 is used to unlockably lock the first supporting part 31 and the second supporting part 32.

[0032] Through the above technical solution, the bracket can change the height of the upper support 11 and the supporting mechanism 2 by moving the second supporting part 32 relative to the first supporting part 31 in the height direction, and can support the part to be supported by two rollers 22, and then lock the first supporting part 31 and the second supporting part 32 by the locking mechanism 4 to adaptively support the parts to be supported at different heights. In addition, the two rollers 22 can also move toward or away from each other to adaptively adjust the position for parts to be supported of different sizes. Therefore, the bracket can adjust the support height and supporting size, and has a wide applicability.

[0033] In some embodiments, reference Figure 1 and Figure 2 The first support part 31 may include a support rod 311 connected to the lower support 12, and the second support part 32 may include an adjustment rod 321 slidably connected to the support rod 311 along the height direction. The support rod 311 is formed with a slide groove 3111 for the adjustment rod 321 to slide and insert. The end of the adjustment rod 321 away from the support rod 311 is connected to the upper support 11. In addition, the locking mechanism 4 may include a locking member 41, which is used to penetrate one of the side walls of the support rod 311 and enter the slide groove 3111 to detachably abut the adjustment rod 321. In this way, the height of the upper support 11 and the supporting mechanism 2 can be changed by the relative sliding of the adjustment rod 321 relative to the support rod 311 in the first direction, thereby adjusting the support height of the bracket, and then the adjustment rod 321 is fixed relative to the support rod 311 by the locking member 41 abutting against the adjustment rod 321, and the support member to be supported is supported by the two rollers 22.

[0034] In some other possible embodiments not shown in the drawings, the first support portion 31 may include a screw connected to the lower support 12, and the second support portion 32 may include a sleeve threadedly sleeved on the screw, and the end of the sleeve away from the screw is rotatably connected to the upper support 11, so that the position of the sleeve in the first direction can be changed by rotating the sleeve on the screw to change the height of the upper support 11 and the supporting mechanism 2, thereby adjusting the support height of the bracket, and then the locking member 41 can be used to abut the adjusting rod 321 to fix the adjusting rod 321 relative to the supporting rod 311, and the supporting member to be supported is supported by the two rollers 22. The present disclosure does not make specific limitations on this.

[0035] It is understood that the locking member 41 can be constructed in any suitable manner. In some embodiments, referring to Figure 3The locking member 41 may include a locking rod 411 slidably inserted into the support rod 311, a ratchet 3211 is formed on one side of the adjusting rod 321 close to the locking rod 411, and a pawl portion 4111 is provided at one end of the locking rod 411 close to the adjusting rod 321 to cooperate with the ratchet 3211 to limit the movement of the adjusting rod 321 toward the lower support 12. The ratchet 3211 is arranged on the adjusting rod 321 along the height direction, and the ratchet 3211 has a flat edge and a beveled edge, and the beveled edge extends from the adjusting rod 321 toward the side close to the support rod 311, so when the height of the bracket needs to be increased, the adjusting rod 321 can be directly lifted to increase the height of the upper support 11 and the supporting mechanism 2. In this process, the beveled edge contacts the ratchet pawl 4111 and drives the ratchet pawl 4111 to move toward the side away from the support rod 311 to avoid the beveled edge from moving upward in the height direction. When the bracket is adjusted to the required height, the ratchet pawl 4111 abuts against the flat edge to stop the adjusting rod 321 from moving downward in the height direction, so as to fix the adjusting rod 321 relative to the support rod 311. In this way, when the height of the bracket is increased, the locking member 41 does not need to be operated, and the adjustment process is relatively simple and the adjustment efficiency is relatively high.

[0036] When the height of the bracket needs to be lowered, the locking rod 411 can be moved toward the side away from the adjustment rod 321 so that the pawl portion 4111 disengages from the ratchet 3211, thereby releasing the locking effect on the adjustment rod 321. After adjusting the bracket to the required height, the locking rod 411 is moved toward the side close to the adjustment rod 321 to abut against the flat edge of the ratchet 3211, thereby stopping the adjustment rod 321 from moving downward in the height direction, thereby fixing the adjustment rod 321 relative to the support rod 311.

[0037] In addition, in some other possible embodiments not shown in the drawings, the locking member 41 may also be configured as a locking bolt, which is threadedly connected and penetrates the support rod 311, so that the end 452 of the locking bolt close to the adjustment rod 321 can abut against the adjustment rod 321 to fix the adjustment rod 321 relative to the support rod 311. For example, when the height of the bracket needs to be adjusted, the locking bolt is loosened to disengage from the adjustment rod 321, and the adjustment rod 321 is slid in the first direction relative to the support rod 311 to change the height of the upper support 11 and the supporting mechanism 2, thereby adjusting the support height of the bracket. When the bracket is adjusted to the required height, the locking bolt is tightened to abut against the adjustment rod 321 to fix the adjustment rod 321 relative to the support rod 311. The present disclosure is not limited to this.

[0038] In some embodiments, reference Figure 3The locking mechanism 4 may further include a first connecting frame 42, a guide sleeve 43 and an elastic member 44. The first connecting frame 42 and the guide sleeve 43 are connected to the support rod 311. The guide sleeve 43 is used for the sliding insertion of the locking rod 411. The elastic member 44 is connected between the locking rod 411 and the guide sleeve 43, and / or the elastic member 44 is connected between the locking rod 411 and the first connecting frame 42. In this way, the guide sleeve 43 can guide the movement of the locking rod 411 toward or away from the adjustment rod 321, reduce the possibility of the locking rod 411 being separated from the support rod 311, and ensure the locking effect of the locking rod 411 on the adjustment rod 321. In addition, the elastic member 44 can drive the locking rod 411 to move toward the adjustment rod 321. For example, when the height of the bracket needs to be increased, the adjustment rod 321 is lifted to increase the height of the upper support 11 and the supporting mechanism 2. When the bracket is adjusted to the required height, the elastic member 44 drives the locking rod 411 to move and rebound in the direction close to the adjustment rod 321 so that the pawl portion 4111 abuts against the ratchet 3211. At this time, the pawl portion 4111 abuts against the flat edge to stop the adjustment rod 321 from moving downward in the height direction, so as to fix the adjustment rod 321 relative to the support rod 311. In this way, when the height of the bracket is increased, there is no need to manually move the locking member 41, which is simple to operate and has high adjustment efficiency.

[0039] When the height of the bracket needs to be lowered, the locking rod 411 can be pulled toward the side away from the adjustment rod 321 so that the pawl portion 4111 disengages from the ratchet 3211, thereby releasing the locking effect on the adjustment rod 321. After adjusting the bracket to the required height, the locking rod 411 is loosened, and the elastic member 44 drives the locking rod 411 to move toward the side close to the adjustment rod 321 and rebound to abut against the flat edge of the ratchet 3211, thereby stopping the adjustment rod 321 from moving downward in the height direction to fix the adjustment rod 321 relative to the support rod 311.

[0040] The elastic member 44 may exemplarily include a structural member such as a spring or an elastic band that can reset the locking rod 411 to a position abutting against the adjusting rod 321. The present disclosure exemplarily configures the elastic member 44 as a spring, which may be connected between the locking rod 411 and the guide sleeve 43, or between the locking rod 411 and the first connecting frame 42. Of course, the number of springs may be set to multiple, and the spring may be simultaneously connected between the locking rod 411 and the guide sleeve 43, and between the locking rod 411 and the first connecting frame 42. The present disclosure is not limited thereto.

[0041] It is understandable that when the height of the bracket needs to be lowered, the locking rod 411 needs to move toward one side of the adjustment rod 321 so that the pawl portion 4111 is disengaged from the ratchet 3211 and maintains this state, so as to release the locking effect on the adjustment rod 321. During this process, if the staff keeps pulling the locking rod 411, it will undoubtedly increase the labor intensity of the staff. Therefore, in some embodiments, reference is made to FIG. Figure 3 The end 452 of the locking rod 411 away from the support rod 311 may be connected to a pull ring 45, and a stopper 451 may be provided on the pull ring 45. The pull ring 45 is used to drive the locking rod 411 to move in a direction away from the support rod 311, and can stop the movement of the locking rod 411 toward the support rod 311 through the stopper 451. In this way, the staff can pull the locking rod 411 through the pull ring 45 to facilitate the movement of the locking rod 411, and then stop the movement of the locking rod 411 toward the support rod 311 through the stopper 451, so that the staff does not need to continuously pull the pull ring 45 to maintain the position of the locking rod 411, thereby reducing the labor intensity of the staff.

[0042] Exemplarily, the connection between the pull ring 45 and the locking rod 411 is located in the first connecting frame 42, and a mounting groove for placing the limit block 451 is formed on the pull ring 45, and the limit block 451 is rotatably connected to the mounting groove. When the staff pulls the locking rod 411 to move away from the support rod 311 through the pull ring 45, the limit block 451 is placed in the mounting groove so as not to affect the movement of the pull ring 45 relative to the first connecting frame 42. When the pawl portion 4111 is disengaged from the ratchet 3211, the limit block 451 is located outside the first connecting frame 42. At this time, the limit block 451 is rotated to protrude from the mounting groove, and the pull ring 45 is loosened. The limit block 451 can abut against the first connecting frame 42 to stop the movement of the locking rod 411 toward the support rod 311, so as to fix the locking rod 411 and maintain the position of the locking rod 411. The present disclosure is not limited to this.

[0043] In some other embodiments, reference Figure 3The locking mechanism 4 can also include a second connecting frame 46 connected to the first connecting frame 42 on a side away from the support rod 311. The pull ring 45 has an end 452 connected to the locking rod 411 and a lifting portion 453 connected to the end 452. The end 452 passes through the second connecting frame 46. The limit block 451 is arranged at the end 452. The second connecting frame 46 is formed with an avoidance hole 461 for the limit block 451 to pass through. The limit block 451 can abut against the side of the second connecting frame 46 away from the first connecting frame 42. In this way, the staff can use the lifting portion 453 to pull the end portion 452 and the locking rod 411 in a direction away from the support rod 311 until the pawl portion 4111 is disengaged from the ratchet tooth 3211. During this process, the limit block 451 passes through the avoidance hole 461 from the second connecting frame 46 to move to the outside of the second connecting frame 46, and then the position of the limit block 451 is changed by rotating the lifting portion 453. After the staff loosens the pull ring 45, the limit block 451 can abut against the outer side of the second connecting frame 46 to stop the locking rod 411 from moving toward the support rod 311, so as to fix the locking rod 411 and maintain the position of the locking rod 411.

[0044] In some embodiments, a limiting structure for stopping the limit block 451 is provided on one side of the second connecting frame 46 away from the first connecting frame 42. It can be understood that the pull ring 45 will drive the locking rod 411 to rotate during the rotation process, so the elastic member 44, such as a spring, has a rebound force to drive the locking rod 411 and the pull ring 45 to rotate in the opposite direction. At the same time, the elastic member 44 is stretched at this time, and has a rebound force to drive the locking rod 411 and the pull ring 45 to move toward the adjustment rod 321. Therefore, when the limit block 451 abuts against the outer side of the second connecting frame 46, there is friction between the limit block 451 and the second connecting frame 46 to prevent the limit block 451 from rotating in the opposite direction, and the limit block 451 will not rotate and pass through the avoidance hole 461, and under the action of the elastic member 44, the locking rod 411 will move toward the direction close to the adjustment rod 321 and abut against the locking adjustment rod 321. Exemplarily, the limiting structure may be configured as a limiting groove (not shown) for accommodating the limiting block 451, in which case the limiting block 451 may be placed in the limiting groove to stop the limiting block 451 from rotating in the opposite direction through the groove wall of the limiting groove, or the limiting structure may be configured as a limiting protrusion, in which case the avoidance hole 461 is located on one side of the limiting protrusion, and the pull ring 45 drives the limiting block 451 to move over the limiting protrusion and be placed on the other side of the limiting protrusion, so as to be used to stop the limiting block 451 from moving in the opposite direction. The present disclosure is not limited thereto.

[0045] In some embodiments, reference Figure 1 and Figure 4A cavity 211 may be formed on the support seat 21, and a first screw 23 and a second screw 24 with opposite thread directions are rotatably connected between the inner walls of the support seat 21 on opposite sides of the cavity 211, and one end of the first screw 23 away from the inner wall of the support seat 21 forming the cavity 211 is connected to one end of the second screw 24 away from the inner wall of the support seat 21 forming the cavity 211, and the first screw 23 and the second screw 24 are respectively threadedly connected with a slide 25, and the two slides 25 are respectively connected to the two rollers 22, and at least one side of the slide 25 contacts the inner wall of the support seat 21 forming the cavity 211, and the first screw 23 and / or the second screw 24 are connected to a driving member 26. The driving member 26 may be configured as a motor, and the motor may drive the connection to the first screw 23, and may also drive the connection to the second screw 24, and of course, may also drive the connection to the first screw 23 and the second screw 24. The present disclosure exemplarily sets the motor to be driven and connected to the first screw 23. In this way, when the positions of the two rollers 22 need to be adjusted, the first screw 23 can be driven to rotate by the motor. At this time, the first screw 23 drives the second screw 24 to rotate synchronously, so that the two slides 25 can move toward or away from each other to change the relative distance between the two rollers 22, so as to adjust according to the size of the supported part and adaptively support the supported part.

[0046] It can be understood that in some other possible embodiments not shown in the accompanying drawings, the first screw 23 and the second screw 24 can also be a bidirectional lead screw rotatably connected between the inner walls on the opposite sides of the support seat 21 that forms the cavity 211. At this time, the driving member 26 drives one end of the bidirectional lead screw, and the two slide seats 25 are threadedly connected to the bidirectional lead screw and correspondingly connected to the two rollers 22. The present disclosure is not limited to this.

[0047] In some embodiments, reference Figure 1 and Figure 2 The support may further include a driving assembly 5, which may include a driving motor 51, a first support rod 52 connected to the lower support 12, and a second support rod 53 movably connected to the first support rod 52 in the height direction, wherein a rack 54 is connected to the first support rod 52, and the output shaft of the driving motor 51 is connected to a gear 55 meshing with the rack 54. In this way, when it is necessary to adjust the support height of the support, the driving motor 51 drives the gear 55 to rotate, and the gear 55 meshes with the rack 54 to drive the second support rod 53 to move in the height direction relative to the first support rod 52, thereby driving the upper support 11 and the supporting mechanism 2 to move in the height direction, and changing the position of the supporting mechanism 2 to adjust the support height of the support. It can be understood that in this process, the locking structure unlocks the first support portion 31 and the second support portion 32, that is, the adjustment rod 321 can move in the height direction relative to the support rod 311.

[0048] In addition, the drive motor 51 can be connected to any one or more of the support rods 311 through a support frame to reduce the bearing pressure of the drive motor 51 and the transmission pressure of the drive motor 51. In some other possible embodiments not shown in the drawings, the drive assembly 5 can also include a linear drive device such as a cylinder or a hydraulic cylinder. For example, the drive assembly 5 can be constructed as a hydraulic cylinder, the cylinder body of the hydraulic cylinder is connected to the lower support 12, and the piston rod of the hydraulic cylinder is connected to the upper support 11, so that the upper support 11 and the supporting mechanism 2 can be driven by the hydraulic cylinder to change their positions in the height direction. The present disclosure does not make specific limitations on this.

[0049] In some embodiments, reference Figure 1 The number of lifting mechanisms 3 can be set to multiple and evenly arranged around the center circumference of the base 1. In this way, the uniformity of the force and the support stability of the supporting mechanism 2 when supporting the supported member can be improved through the evenly distributed multiple lifting mechanisms 3, thereby improving the safety of the bracket when supporting the supported member.

[0050] The present disclosure exemplarily describes a height adjustment process of a bracket when supporting a member to be supported.

[0051] The staff pulls the end portion 452 and the locking rod 411 through the lifting portion 453 to move in a direction away from the support rod 311 until the pawl portion 4111 is disengaged from the ratchet tooth 3211. During this process, the limit block 451 passes through the avoidance hole 461 from the second connecting frame 46 to move outside the second connecting frame 46, and then the position of the limit block 451 is changed by rotating the lifting portion 453, so that after the staff loosens the pull ring 45, the limit block 451 is placed in the limit groove.

[0052] Then, the gear 55 is driven to rotate by the driving motor 51, and the gear 55 engages with the rack 54 to drive the second support rod 53 to move in the height direction relative to the first support rod 52, thereby driving the upper support 11 and the supporting mechanism 2 to move in the height direction, changing the position of the supporting mechanism 2 to adjust the support height of the bracket. In this process, the first screw rod 23 is driven to rotate by the driving member 26, and the first screw rod 23 drives the second screw rod 24 to rotate synchronously, so that the two slides 25 can move toward or away from each other to change the relative distance between the two rollers 22, so as to adjust according to the size of the supported member and adaptively support the supported member.

[0053] Then the staff pulls the end 452 and the locking rod 411 through the lifting part 453 to remove the limit block 451 from the limit groove, and rotates the lifting part 453 in the opposite direction so that the locking rod 411 can move toward the direction close to the support rod 311 under the action of the elastic member 44 until the pawl part 4111 abuts against the ratchet tooth 3211 to lock the adjustment rod 321 relative to the support rod 311.

[0054] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0056] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A bracket, characterized in that: include: A base, comprising an upper support and a lower support arranged at intervals in a height direction; The supporting mechanism comprises a supporting seat connected to the upper support, wherein a pair of rollers are arranged on the supporting seat, the two rollers are used to support the member to be supported and the two rollers can move toward or away from each other; A lifting mechanism connected between the upper support and the lower support, the lifting mechanism comprising a first support portion and a second support portion, the first support portion being connected to the lower support, and the second support portion being movably connected between the first support portion and the upper support in the height direction; as well as The locking mechanism is used to unlockably lock the first supporting portion and the second supporting portion.

2. The bracket according to claim 1, characterized in that: The first supporting part includes a supporting rod connected to the lower support, the second supporting part includes an adjusting rod slidably connected to the supporting rod along the height direction, a sliding groove is formed on the supporting rod for the adjusting rod to be slidably inserted, and the locking mechanism includes a locking piece, which is used to penetrate one of the side walls of the supporting rod and enter the sliding groove to detachably abut the adjusting rod.

3. The bracket according to claim 2, characterized in that: The locking member includes a locking rod slidably inserted into the support rod, a ratchet is formed on one side of the adjusting rod close to the locking rod, and a pawl portion is provided at one end of the locking rod close to the adjusting rod to cooperate with and abut against the ratchet to limit the movement of the adjusting rod toward the lower support.

4. The bracket according to claim 3, characterized in that: The locking mechanism also includes a first connecting frame, a guide sleeve and an elastic member, wherein the first connecting frame and the guide sleeve are connected to the support rod, the guide sleeve is used for the sliding insertion of the locking rod, the elastic member is connected between the locking rod and the guide sleeve, and / or the elastic member is connected between the locking rod and the first connecting frame.

5. The bracket according to claim 4, characterized in that: The end of the locking rod away from the support rod is connected with a pull ring, and a limit block is provided on the pull ring. The pull ring is used to drive the locking rod to move in a direction away from the support rod, and can stop the movement of the locking rod toward the support rod through the limit block.

6. The bracket according to claim 5, characterized in that: The locking mechanism also includes a second connecting frame connected to the first connecting frame on a side away from the support rod, the pull ring has an end connected to the locking rod and a lifting portion connected to the end, the end is passed through the second connecting frame, the limit block is arranged at the end, and an avoidance hole for the limit block to pass through is formed on the second connecting frame, and the limit block can abut against the side of the second connecting frame away from the first connecting frame.

7. The bracket according to claim 6, characterized in that: A limiting structure for stopping the limiting block is disposed on one side of the second connecting frame away from the first connecting frame.

8. The bracket according to claim 1, characterized in that: A cavity is formed on the support seat, and a first screw and a second screw with opposite thread directions are rotatably connected between inner walls on opposite sides of the support seat forming the cavity, one end of the first screw away from the inner wall of the support seat forming the cavity is connected to one end of the second screw away from the inner wall of the support seat forming the cavity, the first screw and the second screw are each threadedly connected to a sliding seat, the two sliding seats are respectively connected to the two rollers, at least one side of the sliding seat contacts the inner wall of the support seat forming the cavity, and the first screw and / or the second screw are connected to a driving member.

9. The bracket according to claim 1, characterized in that: The bracket also includes a driving assembly, which includes a driving motor, a first support rod connected to the lower support, and a second support rod movably connected to the first support rod along the height direction, a rack is connected to the first support rod, and the output shaft of the driving motor is connected to a gear meshing with the rack.

10. The bracket according to claim 1, characterized in that: The number of the lifting mechanisms is set to be multiple and is evenly arranged around the center circumference of the base.

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