Wedge-shaped lifting platform

Abstract

The utility model relates to the field of operating tables, in particular to a wedge-shaped lifting platform which comprises a rack, a mounting table, two sets of lifting mechanisms and a transition supporting plate, and the two sets of lifting mechanisms are oppositely arranged at the two ends of the mounting table; each lifting mechanism comprises a first wedge-shaped base arranged on the mounting table in a sliding mode, a second wedge-shaped base arranged on the lower surface of the lifting table, a linear driving assembly used for driving the first wedge-shaped base to linearly slide in a reciprocating mode relative to the mounting table and a vertical guiding assembly, and the vertical guiding assembly comprises a plurality of vertical guiding parts. The plurality of vertical guide parts are arranged around the second wedge-shaped seat, each vertical guide part comprises a guide sliding rail and a sliding seat arranged on the guide sliding rail in a sliding manner, the sliding seats are arranged on the mounting table, and the guide sliding rails are arranged on the second wedge-shaped seat. The lifting platform is extremely high in bearing capacity, abrasion of the contact face hardly influences the bearing capacity and lifting precision, and extremely excellent high bearing performance of the lifting platform can be kept for a long time.

Description

Technical Field

[0001] This application relates to the field of operating tables, and in particular to a wedge-shaped lifting platform. Background Art

[0002] Traditional Z-axis lifting platforms generally use servo motors, lead screw modules, and linear slide rails for guidance. The lead screw module and the linear slide rail are arranged along the movement direction, and the vertical movement of the platform in the Z direction is achieved by the rotation of the servo motor. This type of automatic lifting platform has the following disadvantages: all the loads of the lifting platform will eventually be applied to the lead screw nut of the lead screw module, resulting in limited platform load capacity, easy wear of the lead screw module, the need for a larger power motor for the same load, and difficulty in controlling the lifting height accuracy. Utility Model Content

[0003] In order to solve the problem that all the loads of the lifting platform will eventually be applied to the lead screw nut of the lead screw module, resulting in limited platform load capacity, easy wear of the lead screw module, the need for a larger power motor for the same load, and difficulty in controlling the lifting height accuracy, this application provides a wedge-shaped lifting platform.

[0004] A wedge-shaped lifting platform provided by this application adopts the following technical solutions:

[0005] The wedge-shaped lifting platform includes:

[0006] A frame;

[0007] An installation table, arranged on the top of the frame;

[0008] A lifting table, arranged above the installation table;

[0009] Two sets of lifting mechanisms, which are oppositely arranged at both ends of the installation table. Each set of lifting mechanisms includes a first wedge-shaped seat slidably arranged on the installation table, a second wedge-shaped seat arranged on the lower surface of the lifting table, a linear drive assembly for driving the first wedge-shaped seat to linearly reciprocate relative to the installation table, and a vertical guiding assembly. The upper surface of the first wedge-shaped seat is provided with a first inclined surface, and the lower surface of the second wedge-shaped seat is provided with a second inclined surface. The first inclined surface and the second inclined surface are in contact with each other and are parallel to each other. The vertical guiding assembly includes a number of vertical guiding components, and the number of vertical guiding components surrounds the second wedge-shaped seat. The vertical guiding component includes a guiding slide rail and a sliding seat slidably arranged on the guiding slide rail. The sliding seat is arranged on the installation table, and the guiding slide rail is arranged on the second wedge-shaped seat;

[0010] An intermediate support plate is provided between the mounting table and the first wedge-shaped seat. The intermediate support plate is disposed on the upper surface of the mounting table. A chute is formed on the upper surface of the intermediate support plate. The first wedge-shaped seat is slidably disposed in the chute and the entire lower surface of the first wedge-shaped seat is in slidable contact with the bottom of the chute.

[0011] By adopting the above technical solution, in this application, the lifting table is supported by two sets of lifting mechanisms, and the first inclined surface and the second inclined surface of the first wedge-shaped seat and the second wedge-shaped seat are in abutment with each other. The first wedge-shaped seat is slidably disposed in the chute and the entire lower surface of the first wedge-shaped seat is in slidable contact with the bottom of the chute. Whether between the first wedge-shaped seat and the second wedge-shaped seat, or between the first wedge-shaped seat and the intermediate support plate, or between the intermediate support plate and the mounting table, there is a very large contact and support area, with extremely strong load-bearing capacity. Moreover, the wear of the contact surface has little impact on the load-bearing capacity and the lifting accuracy, and the extremely excellent high load-bearing performance of the lifting table can be maintained for a long time. Secondly, in this application, the first wedge-shaped seat is linearly moved by the linear drive assembly to push the second wedge-shaped seat to lift, thereby realizing the lifting of the lifting table. The load acting force in the vertical direction will not act on the linear drive assembly, and the wear amount of the linear drive assembly is extremely small after long-term use, and the lifting accuracy of the lifting table can be maintained for a long time.

[0012] Preferably, the linear drive assembly includes a screw rod and two bearing seats respectively connected to both ends of the screw rod. The screw rod passes through the first wedge-shaped seat and is screwed to the first wedge-shaped seat. The two bearing seats are disposed on the mounting table.

[0013] Preferably, it further includes a drive mechanism for driving the screw rod to rotate. The drive mechanism includes a mounting seat disposed on the mounting table, a motor disposed on the mounting table, a driving wheel disposed at the output end of the motor, two driven wheels respectively fixed to the two ends of the screw rods of the two sets of lifting mechanisms, and a transmission belt connected between the driving wheel and the two driven wheels.

[0014] Preferably, the drive mechanism further includes a tensioning assembly. The tensioning assembly includes tensioning members oppositely disposed on both sides of the mounting seat. The tensioning member includes an adjustable seat and a tensioning wheel disposed on the adjustable seat. The wheel surface of the tensioning wheel abuts against the inner side surface of the transmission belt. An activity groove is formed in the adjustable seat, and a locking bolt is disposed in the activity groove. A plurality of locking screw holes are formed in the side surface of the mounting seat, and the locking bolt is screwed to one of the locking screw holes.

[0015] Preferably, it further includes a lifting height control mechanism. The lifting height control mechanism includes two induction switches, a mounting frame, a trigger piece, and an adjusting bolt. The two induction switches are arranged on the mounting table along the vertical direction. The mounting frame is arranged on the lifting table. A plurality of connection holes are arranged on the mounting frame at intervals along the vertical direction. The trigger piece is provided with an adjusting groove along the vertical direction. The adjusting bolt passes through the adjusting groove and is connected to one of the connection holes. The induction switch is electrically connected to the motor, and the trigger piece is used to trigger the induction switch.

[0016] Preferably, it further includes two dust-proof enclosures. The dust-proof enclosures are fixed to the mounting table and surround the periphery of one of the first wedge-shaped seats. The bearing seat is fixed to the dust-proof enclosure, and the sliding seat is arranged in the dust-proof enclosure.

[0017] Preferably, a retaining wall is arranged on each side of the second inclined surface. The two retaining walls are fixed to the second wedge-shaped seat. The two retaining walls and the second inclined surface form a guiding groove. The first wedge-shaped seat is slidably arranged in the guiding groove, and the guiding direction of the guiding groove is consistent with the driving direction of the linear driving assembly.

[0018] Preferably, a plurality of connecting bolts for fixing the machine frame are arranged at the bottom of the machine frame.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] In the present application, the lifting table is supported by two sets of lifting mechanisms, and the first inclined surface of the first wedge-shaped seat and the second inclined surface of the second wedge-shaped seat are in mutual contact. The first wedge-shaped seat is slidably arranged in the sliding groove, and the entire lower surface of the first wedge-shaped seat is in full sliding contact with the bottom of the sliding groove. Whether between the first wedge-shaped seat and the second wedge-shaped seat, or between the first wedge-shaped seat and the transition support plate, or between the transition support plate and the mounting table, there is a very large contact and support area, with extremely strong load-bearing capacity. Moreover, the wear of the contact surface has little impact on the load-bearing capacity and lifting accuracy, and the extremely excellent high load-bearing performance of the lifting table can be maintained for a long time. Secondly, in the present application, the linear driving assembly drives the first wedge-shaped seat to linearly move to push the second wedge-shaped seat to lift, thereby realizing the lifting of the lifting table. The load acting force in the vertical direction will not act on the linear driving assembly, and the wear amount of the linear driving assembly is extremely small after long-term use, and the lifting accuracy of the lifting table can be maintained for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present application.

[0022] Figure 2 is the present application Figure 1 is a partial enlarged view of area A in the figure.

[0023] Figure 3 It is another perspective view of the present application.

[0024] Figure 4 It is the Figure 3 partial enlarged view of area B in the present application

[0025] Figure 5 It is the partial structural exploded view of the lifting mechanism and the driving mechanism of the present application.

[0026] Figure 6 It is the perspective view of the second wedge base of the present application.

[0027] Description of reference numerals:

[0028] 1, frame; 11, connecting bolt;

[0029] 2, mounting table;

[0030] 3, lifting table;

[0031] 4, lifting mechanism; 41, first wedge base; 411, first inclined surface; 42, second wedge base; 421, second inclined surface; 422, retaining wall; 423, guiding groove; 43, linear driving assembly; 431, screw rod; 432, bearing seat; 44, vertical guiding assembly; 441, vertical guiding member; 4411, guiding slide rail; 4412, sliding seat;

[0032] 5, transition support plate; 51, sliding groove;

[0033] 6, driving mechanism; 61, mounting seat; 62, motor; 63, driving wheel; 64, driven wheel; 65, transmission belt; 66, tensioning assembly; 661, tensioning member; 662, adjustable seat; 663, tensioning wheel; 664, movable groove;

[0034] 7, lifting height control mechanism; 71, inductive switch; 72, mounting bracket; 73, trigger piece; 74, connecting hole; 75, adjusting groove;

[0035] 8, dust-proof enclosure. Detailed description of the specific implementation

[0036] The following further describes the present application in detail with reference to the Figures 1-6 accompanying drawings.

[0037] The embodiment of the present application discloses a wedge-shaped lifting platform.

[0038] Refer to Figures 1-6 .

[0039] The wedge-shaped lifting platform includes:

[0040] frame 1;

[0041] The mounting table 2 is arranged on the top of the frame 1;

[0042] The lifting table 3 is arranged above the mounting table 2;

[0043] Refer to Figure 5 , two sets of lifting mechanisms 4. The two sets of lifting mechanisms 4 are oppositely arranged at both ends of the mounting table 2. Each set of lifting mechanism 4 includes a first wedge-shaped seat 41 slidably arranged on the mounting table 2, a second wedge-shaped seat 42 arranged on the lower surface of the lifting table 3, a linear driving component 43 for driving the first wedge-shaped seat 41 to linearly reciprocate relative to the mounting table 2, and a vertical guiding component 44. The upper surface of the first wedge-shaped seat 41 is provided with a first inclined surface 411, and the lower surface of the second wedge-shaped seat 42 is provided with a second inclined surface 421. The first inclined surface 411 and the second inclined surface 421 are in contact with each other and are parallel to each other. The vertical guiding component 44 includes a plurality of vertical guiding members 441. The plurality of vertical guiding members 441 are arranged around the second wedge-shaped seat 42. The vertical guiding member 441 includes a guiding slide rail 4411 and a sliding seat 4412 slidably arranged on the guiding slide rail 4411. The sliding seat 4412 is arranged on the mounting table 2, and the guiding slide rail 4411 is arranged on the second wedge-shaped seat 42;

[0044] Refer to Figure 5 , an intermediate support plate 5 is arranged between the mounting table 2 and the first wedge-shaped seat 41. The intermediate support plate 5 is arranged on the upper surface of the mounting table 2. A chute 51 is formed on the upper surface of the intermediate support plate 5. The first wedge-shaped seat 41 is slidably arranged in the chute 51 and the entire lower surface of the first wedge-shaped seat 41 is in slidable contact with the bottom of the chute 51.

[0045] Refer to Figure 5, by adopting the above technical solution, the present application supports the lifting table 3 through two sets of lifting mechanisms 4, and the first inclined surfaces 411 of the first wedge-shaped seat 41 and the second wedge-shaped seat 42 are in contact with each other. The first wedge-shaped seat 41 is slidably arranged in the chute 51 and the entire lower surface of the first wedge-shaped seat 41 is in slidable contact with the bottom of the chute 51. Whether between the first wedge-shaped seat 41 and the second wedge-shaped seat 42, or between the first wedge-shaped seat 41 and the transition support plate 5, or between the transition support plate 5 and the mounting table 2, there is a very large contact and support area, with extremely strong load-bearing capacity. Moreover, the wear of the contact surface has little impact on the load-bearing capacity and lifting accuracy, and the extremely excellent high load-bearing performance of the lifting table 3 can be maintained for a long time. Secondly, in the present application, the linear drive assembly 43 drives the first wedge-shaped seat 41 to linearly move to push the second wedge-shaped seat 42 to lift, thereby realizing the lifting of the lifting table 3. The load acting force in the vertical direction will not act on the linear drive assembly 43. After long-term use, the wear amount of the linear drive assembly 43 is extremely small, and the lifting accuracy of the lifting table 3 can be maintained for a long time. And through a number of vertical guiding components 441 to guide the lifting of the lifting table 3, the lifting accuracy and lifting stability of the lifting table 3 can be effectively improved.

[0046] Refer to Figure 5 , the linear drive assembly 43 includes a screw rod 431 and two bearing seats 432 respectively connected to both ends of the screw rod 431. The screw rod 431 passes through the first wedge-shaped seat 41 and is screwed with the first wedge-shaped seat 41. The two bearing seats 432 are arranged on the mounting table 2. Specifically, the screw rod 431 rotates relative to the two bearing seats 432, thereby driving the first wedge-shaped seat 41 screwed and engaged with it to slide relative to the chute 51. During the sliding process, the first inclined surface 411 of the first wedge-shaped seat 41 presses the second inclined surface 421 of the second wedge-shaped seat 42. Due to the existence of a number of vertical guiding components 441, the second wedge-shaped seat 42 cannot move in the horizontal plane, and thus is pressed to slide upward along the vertical direction relative to the sliding seat 4412. On the contrary, the lifting table 3 descends, thereby realizing the lifting adjustment of the lifting table 3.

[0047] Refer to Figure 2 and Figure 5, further comprising a driving mechanism 6 for driving the rotation of the screw rod 431. The driving mechanism 6 includes a mounting seat 61 provided on the mounting table 2, a motor 62 provided on the mounting table 2, a driving wheel 63 provided at the output end of the motor 62, two driven wheels 64 respectively fixed to the ends of the two screw rods 431 of the two lifting mechanisms 4, and a transmission belt 65 connected between the driving wheel 63 and the two driven wheels 64. Specifically, when the motor 62 rotates, the driving wheel 63 drives the two driven wheels 64 to rotate through the belt. The two driven wheels 64 respectively drive the two screw rods 431 of the two lifting mechanisms 4 to rotate. The screw rod 431 rotates relative to the two bearing seats 432, thereby driving the first wedge-shaped seat 41 screwed and engaged with it to slide relative to the sliding groove 51. During the sliding process, the first inclined surface 411 of the first wedge-shaped seat 41 presses the second inclined surface 421 of the second wedge-shaped seat 42. Due to the presence of a number of vertical guiding members 441, the second wedge-shaped seat 42 cannot move in the horizontal plane, and thus is pressed to slide upward along the vertical direction relative to the sliding seat 4412, so as to realize the synchronous rising of both ends of the lifting table 3. Conversely, the lifting table 3 descends, thereby realizing the lifting adjustment of the lifting table 3.

[0048] Refer to Figure 1 and Figure 2 , the driving mechanism 6 further includes a tensioning assembly 66. The tensioning assembly 66 includes tensioning members 661 oppositely arranged on both sides of the mounting seat 61. The tensioning member 661 includes an adjustable seat 662 and a tensioning wheel 663 provided on the adjustable seat 662. The wheel surface of the tensioning wheel 663 abuts against the inner side surface of the transmission belt 65. The adjustable seat 662 is provided with a movable groove 664. A locking bolt is arranged in the movable groove 664. A number of locking screw holes are provided on the side surface of the mounting seat 61. The locking bolt is screwed with one of the locking screw holes. Specifically, the wheel surface of the tensioning wheel 663 abuts against the inner side surface of the transmission belt 65, thereby ensuring that the transmission belt 65 is in a taut state, increasing the static friction or meshing force between the transmission belt 65 and the driving wheel 63 or the driven wheel 64, avoiding the slipping of the transmission belt 65, and ensuring the accurate and stable lifting of the lifting table 3.

[0049] Refer to Figure 3 and Figure 4, further comprising a lifting height control mechanism 7, the lifting height control mechanism 7 includes two induction switches 71, a mounting bracket 72, a trigger piece 73 and an adjusting bolt. The two induction switches 71 are arranged on the mounting table 2 along the vertical direction. The mounting bracket 72 is arranged on the lifting table 3. The mounting bracket 72 is provided with a plurality of connecting holes 74 at intervals along the vertical direction. The trigger piece 73 is provided with an adjusting groove 75 along the vertical direction. The adjusting bolt passes through the adjusting groove 75 and is connected to one of the connecting holes 74. The induction switch 71 is electrically connected to the motor 62. The trigger piece 73 is used to trigger the induction switch 71. Specifically, the two induction switches 71 are used to control the maximum lifting stroke size of the lifting table 3. When the trigger piece 73 triggers any one of the induction switches 71, an induction signal is transmitted back, and the motor 62 stops working. The settings of the connecting hole 74 and the adjusting groove 75 can effectively adjust the height of the trigger piece 73 in the vertical direction, thereby achieving the purpose of adjusting the lowest height and the maximum height of the lifting table 3.

[0050] Refer to Figure 1 , further comprising two dust-proof enclosures 8. The dust-proof enclosures 8 are fixed to the mounting table 2 and the dust-proof enclosures 8 surround the periphery of one of the first wedge-shaped seats 41. The bearing seat 432 is fixed to the dust-proof enclosure 8. The sliding seat 4412 is arranged in the dust-proof enclosure 8. Specifically, the dust-proof enclosures 8 can effectively reduce the possibility of external dust entering the first inclined surface 411, the second inclined surface 421 and the sliding groove 51, and avoid dust accumulation resulting in an increase in the wear amount.

[0051] Refer to Figure 6 , on both sides of the second inclined surface 421, there is respectively provided a retaining wall 422. The two retaining walls 422 are fixed to the second wedge-shaped seat 42. The two retaining walls 422 and the second inclined surface 421 form a guiding groove 423. The first wedge-shaped seat 41 is slidably arranged in the guiding groove 423. The guiding direction of the guiding groove 423 is the same as the driving direction of the linear driving assembly 43. Specifically, the setting of the guiding groove 423 can improve the linear sliding stability and accuracy of the first wedge-shaped seat 41.

[0052] Refer to Figure 1 , at the bottom of the frame 1, there are provided a plurality of connecting bolts 11 for fixing the frame 1.

[0053] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. Wedge-shaped lifting platform, characterized by: include: Rack (1); A mounting platform (2) is arranged on the top of the frame (1); A lifting platform (3) is arranged above the mounting platform (2); Two sets of lifting mechanisms (4), the two sets of lifting mechanisms (4) are arranged at two ends of the mounting platform (2) in a relative manner, each set of lifting mechanisms (4) comprises a first wedge-shaped seat (41) slidably arranged on the mounting platform (2), a second wedge-shaped seat (42) arranged on the lower surface of the lifting platform (3), a linear drive component (43) for driving the first wedge-shaped seat (41) to slide linearly back and forth relative to the mounting platform (2), and a vertical guide component (44), the upper surface of the first wedge-shaped seat (41) is provided with a first inclined surface (411), the lower surface of the second wedge-shaped seat (42) is provided with a first inclined surface (412), and the lower surface of the second wedge-shaped seat (42) is provided with a first inclined surface (413). The first inclined surface (411) and the second inclined surface (421) are mutually abutted and parallel, the vertical guide assembly (44) comprises a plurality of vertical guide components (441), the plurality of vertical guide components (441) are arranged around the second wedge-shaped seat (42), the vertical guide component (441) comprises a guide rail (4411) and a sliding seat (4412) slidably arranged on the guide rail (4411), the sliding seat (4412) is arranged on the mounting platform (2), and the guide rail (4411) is arranged on the second wedge-shaped seat (42); A transition support plate (5) is arranged between the mounting platform (2) and the first wedge-shaped seat (41), and the transition support plate (5) is arranged on the upper surface of the mounting platform (2). A slide groove (51) is opened on the upper surface of the transition support plate (5), and the first wedge-shaped seat (41) is slidably arranged in the slide groove (51) and the entire lower surface of the first wedge-shaped seat (41) is completely in slidable contact with the bottom of the slide groove (51).

2. The wedge-shaped lifting platform according to claim 1, characterized in that: The linear drive assembly (43) comprises a screw rod (431) and two bearing seats (432) respectively connected to the two ends of the screw rod (431); the screw rod (431) is passed through the first wedge-shaped seat (41) and is threadedly connected to the first wedge-shaped seat (41); and the two bearing seats (432) are arranged on the mounting platform (2).

3. The wedge-shaped lifting platform according to claim 2, characterized in that: The invention also comprises a driving mechanism (6) for driving the screw rod (431) to rotate, wherein the driving mechanism (6) comprises a mounting seat (61) arranged on the mounting platform (2), a motor (62) arranged on the mounting platform (2), a driving wheel (63) arranged at the output end of the motor (62), two driven wheels (64) respectively fixed to the ends of the two screw rods (431) of the two sets of lifting mechanisms (4), and a transmission belt (65) connected between the driving wheel (63) and the two driven wheels (64).

4. The wedge-shaped lifting platform according to claim 3, characterized in that: The driving mechanism (6) further comprises a tensioning assembly (66), the tensioning assembly (66) comprising tensioning parts (661) arranged on both sides of the mounting seat (61) in a relative manner, the tensioning part (661) comprising an adjustable seat (662) and a tensioning wheel (663) arranged on the adjustable seat (662), the wheel surface of the tensioning wheel (663) abuts against the inner side surface of the transmission belt (65), the adjustable seat (662) is provided with a movable groove (664), a locking bolt is arranged in the movable groove (664), a plurality of locking screw holes are provided on the side surface of the mounting seat (61), and the locking bolt is screwed to one of the locking screw holes.

5. The wedge-shaped lifting platform according to claim 3, characterized in that: The invention also comprises a lifting height control mechanism (7), wherein the lifting height control mechanism (7) comprises two induction switches (71), a mounting frame (72), a trigger plate (73) and an adjusting bolt. The two induction switches (71) are arranged on the mounting platform (2) along the vertical direction, the mounting frame (72) is arranged on the lifting platform (3), the mounting frame (72) is provided with a plurality of connecting holes (74) alternately arranged along the vertical direction, the trigger plate (73) is provided with an adjusting slot (75) along the vertical direction, the adjusting bolt passes through the adjusting slot (75) and is connected to one of the connecting holes (74), the induction switch (71) is electrically connected to the motor (62), and the trigger plate (73) is used to trigger the induction switch (71).

6. The wedge-shaped lifting platform according to claim 2, characterized in that: It also includes two dustproof frames (8), the dustproof frames (8) are fixed to the mounting platform (2) and the dustproof frames (8) are arranged around one of the first wedge-shaped seats (41), the bearing seat (432) is fixed to the dustproof frame (8), and the sliding seat (4412) is arranged on the dustproof frame (8).

7. The wedge-shaped lifting platform according to claim 3, characterized in that: A retaining wall (422) is respectively arranged on both sides of the second inclined surface (421), and the two retaining walls (422) are fixed to the second wedge-shaped seat (42), and the two retaining walls (422) and the second inclined surface (421) form a guide groove (423), and the first wedge-shaped seat (41) is slidably arranged in the guide groove (423), and the guiding direction of the guide groove (423) is consistent with the driving direction of the linear drive assembly (43).

8. The wedge-shaped lifting platform according to claim 1, characterized in that: A plurality of connecting bolts (11) for fixing the frame (1) are arranged at the bottom of the frame (1).

Images