CN110509236B

CN110509236B - Working table

Info

Publication number: CN110509236B
Application number: CN201810490094.3A
Authority: CN
Inventors: 张晓强
Original assignee: Beijing Jingdong Century Trading Co Ltd; Beijing Jingdong Shangke Information Technology Co Ltd
Current assignee: Beijing Jingdong Century Trading Co Ltd; Beijing Jingdong Shangke Information Technology Co Ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2021-04-30
Anticipated expiration: 2038-05-21
Also published as: CN110509236A

Abstract

The invention provides a workbench, which comprises a workbench bracket and a turnover mechanism, wherein the workbench bracket comprises a bracket body and a bearing seat, the turnover mechanism comprises two turnover support shafts and two turnover support pieces, the workbench is fixedly connected with an installation platform through the turnover support pieces, and the free turnover and positioning of the installation platform are realized through the matching of the turnover support shafts and the bearing seat; meanwhile, the open-close type structure of the bearing seat is convenient for loading and unloading the mounting table; the Y-shaped guide rail, the guide rail driving assembly and the slow descending assembly realize the self-service unloading function of the workbench. The overturning, positioning and self-help unloading of the workbench can be easily completed by one worker, no electric power support is needed, and no power supply is needed to be installed, so that the workbench is not limited by a field power supply, and the cost is saved; the movable workbench is more flexible, the assembly of parts to subsequent debugging can be completed on one workbench, and the whole installation and the transportation in the debugging process are facilitated.

Description

Working table

Technical Field

The invention relates to the field of workbenches, in particular to a workbench capable of being turned, positioned and unloaded.

Background

The workbench is generally used for assembling, producing and maintaining products, and the current universal workbench cannot realize the functions of positioning and overturning.

Take the assembly storage Automated Guided Vehicle (AGV) as an example, a storage AGV needs the staff to accomplish the mechanical part weight of equipment on the workstation and reaches more than 100kg, before the equipment, the staff is fixed in the workstation with storage AGV's mount table, again with scattered mechanical parts installation and mount table, along with the propulsion at the assembly process, the accessories of installing constantly increase, storage AGV's weight also constantly increases, and some installations need follow special angle assembly, consequently, need overturn many times, fix a position the product in the installation. The existing workbench often needs a plurality of workers to cooperate to achieve the effects of turning over and positioning the product in installation, and the operation is time-consuming and labor-consuming; when the output is large, the labor intensity of workers is too large, and the efficiency is low. Therefore, a need exists for a positionable, reversible table.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

Disclosure of Invention

The invention aims to provide a workbench which can be turned over, positioned and conveniently loaded and unloaded, aiming at the technical problem that the existing workbench is difficult to turn over and position when used in the product assembly process.

The workbench comprises a workbench support and a turnover mechanism, wherein the workbench support comprises a support body and two bearing seats which are oppositely arranged on two sides of the support body and have an opening-closing structure. The turnover mechanism comprises two turnover support shafts and two turnover support pieces connected with the two turnover support shafts respectively, the two turnover support pieces can be fixedly connected with two opposite sides of the mounting table respectively, when the bearing seat is in an open state, the two turnover support shafts can be placed in the bearing seats on two sides respectively, and when the bearing seat is in a closed state, the rotation of the turnover support shafts drives the mounting table to rotate through the turnover support pieces.

Preferably, the workstation still includes first locating pin, upset support piece with the junction of upset back shaft is provided with the setting element, the setting element with be provided with first locating hole and second locating hole on the bearing frame respectively, when upset back shaft upset to the locating position, first locating hole with the second locating hole has at least a hole coaxial, first locating pin can insert coaxial hole.

Preferably, each of the turnover supports includes two flat plates located on the same plane, and two opposite sides of the mounting platform are respectively and fixedly connected with the two flat plates of one of the turnover supports.

Preferably, the turning support shaft is detachably connected to the turning support.

Preferably, the turnover support shaft is detachably connected with the positioning piece through a second positioning pin.

Preferably, the workbench is characterized by further comprising two telescopic connecting rods which are respectively arranged on the other two sides of the support body, the two connecting rods are supported on two sides of the overturning supporting piece when in an extending state, and the rotation of the overturning supporting piece is not influenced when the two connecting rods are in a contracting state.

Preferably, two sides of the support body, which are provided with the bearing seat, are also provided with a Y-shaped guide rail and two pairs of sliding pins respectively, the Y-shaped guide rail is provided with a first sliding rail and a second sliding rail which are communicated with each other, the side of the second sliding rail, which is close to the ground, is in an open state, each pair of sliding pins respectively pass through the first sliding rail and the second sliding rail and are detachably connected with one side of the turnover support member, which is away from the mounting table, the sliding pins drive the turnover support member and the mounting table to slide along the Y-shaped guide rail, and the sliding pins which pass through the first sliding rail slide into the second sliding rail.

Preferably, the workbench further comprises at least one guide rail driving assembly, one end of the guide rail driving assembly is rotatably connected with the bracket body, and the other end of the guide rail driving assembly is detachably connected with one overturning supporting piece.

Preferably, the worktable comprises two guide rail driving assemblies, the guide rail driving assemblies are gas springs, and the cylinder ends of the gas springs are detachably connected to one of the turnover supporting members.

Preferably, the workstation still includes one set or two sets of subassembly that slowly falls, every set slowly fall the subassembly including set up in the second slides the gentle drive assembly that falls of slow descent slice of track department, slowly fall drive assembly one end with support body rotatable coupling, the other end and one slowly fall the piece and can dismantle the connection, slowly fall the piece have with slide orbital radian assorted shape, slowly fall drive assembly with when slowly falling the piece and connecting, slowly fall the piece and be in operating condition, slowly fall the piece and make the second slides the track and narrows down, slows down the gliding speed of slide pin along the track.

Preferably, the slow descending driving assembly is a gas spring, and a cylinder end of the gas spring is detachably connected to one slow descending piece.

Preferably, the workbench further comprises a telescopic hanging rack, and when the hanging rack is in an extended state, the turnover mechanism can be supported by the two turnover supporting pieces.

Preferably, the workbench further comprises four liftable bracket feet arranged at the bottom of the supporting end of the workbench bracket.

Preferably, the workbench further comprises four fastening bolts, the support end of the workbench support is provided with four hollow bottom rods, each liftable support foot can be inserted into the hollow interior of each bottom rod, and the length of the liftable support foot inserted into the hollow interior of each bottom rod is adjusted through the fastening position of the fastening bolt on the bottom rod.

The invention provides a workbench which has the following advantages: the workbench comprises a workbench support and a turnover mechanism, wherein the workbench support comprises a support body and bearing seats with opening-closing structures at two sides, the turnover mechanism comprises two turnover support shafts and two turnover support pieces, the workbench is fixedly connected with an installation platform through the turnover support pieces, the installation platform can be freely turned over and positioned through the cooperation of the turnover support shafts and the bearing seats, and meanwhile, the opening-closing structures of the bearing seats facilitate the loading and unloading of the installation platform; furthermore, the Y-shaped guide rail, the guide rail driving assembly and the slow descending assembly are arranged on the workbench to form the self-unloading mechanism of the workbench, so that the workbench can realize the self-unloading function. The overturning, positioning and self-help unloading operation of the workbench can be easily completed by one worker, no electric power support is needed, and no power supply is needed to be installed, so that the workbench is not limited by a field power supply, and the cost is saved; the movable workbench is more flexible, the assembly of parts to subsequent debugging can be completed on one workbench, and the whole installation and the transportation in the debugging process are facilitated.

Drawings

Other features, objects, and advantages of the invention will be apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings and which is incorporated in and constitutes a part of this specification, illustrating embodiments consistent with the present application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of the structure of the inventive table frame;

FIG. 2 is a schematic structural view of the turnover mechanism of the present invention;

FIG. 3 is a schematic structural diagram of a workbench according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a workbench according to an embodiment of the present invention;

FIG. 5 is a schematic view of a connection of a work table according to an embodiment of the present invention;

FIG. 6 is a schematic illustration of a flipping process according to yet another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a descent control patch according to an embodiment of the invention;

fig. 8-11 are schematic views illustrating a self-unloading process of a workbench according to an embodiment of the invention;

FIG. 12 is a schematic structural diagram of a gas spring in accordance with one embodiment of the present invention;

FIG. 13 is a schematic structural view of a ratchet bar according to an embodiment of the present invention.

Reference numerals

11 stent body

12 bearing seat

13 liftable support leg

14 wheels

15 lock wheel rod

21 overturning supporting shaft

21a second positioning pin

22 overturning support

23 positioning piece

24 flat plate

25 sliding pin

25a third positioning pin

3 first positioning pin

4 connecting rod

41 first support block

42 first handle

5Y-shaped guide rail

51 guide rail drive assembly

52 connecting sheet

6 slow descending tablet

61 slow descending driving assembly

7 hanging rack

71 second support block

9 mounting table

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

The workbench comprises a workbench bracket and a turnover mechanism. The structural schematic diagram of the workbench bracket is shown in fig. 1, and it can be seen that the workbench bracket comprises a bracket body 11 and two bearing seats 12 which are arranged on two sides of the bracket body 11 and have an opening-closing structure.

As shown in fig. 2, the turnover mechanism includes two turnover support shafts 21 and two turnover supports 22 respectively connected to the two turnover support shafts 21, and as shown by the oval dotted line frame in fig. 2, the two turnover supports 22 can be respectively and fixedly connected to two opposite sides of the mounting platform 9. The mounting table 9 may be a table on which components are mounted, machined, etc., or may be a base of equipment on which components are to be mounted.

Each turning support 22 is fixedly connected with the mounting table 9 through clamps of different shapes, and different clamps can be adopted according to the shape of the mounting table 9. In the embodiment of the invention of fig. 2, the mounting platform 9 is a rectangular flat plate and the clamping means is a flat plate 24. Specifically, each of the turning supports 22 includes two flat plates 24 located on the same plane, each of the flat plates 24 is provided with a plurality of threaded holes, two opposite sides of the mounting platform 9 are respectively fixedly connected with the two flat plates 24 of one of the turning supports 22 through bolts, and the schematic structural diagram after connection is as shown in fig. 3.

The bearing housing 12 is of an open-close type in which two turning support shafts 21 connected to two turning supports 22, respectively, are placed, respectively, when in an open state. The assembling of parts is carried out on the mounting table 9 connected with the overturning support piece 22, the bearing seat 12 can be closed in the part assembling process, the overturning support shaft 21 rotates along the axial direction of the overturning support shaft 21, and the overturning support piece 22 and the mounting table 9 are driven to rotate, so that the requirement that some parts need special mounting angles is met.

In the process of assembling parts, the mounting table 9 also needs to be turned and fixed at a position, the turning mechanism of the workbench of the present invention is further provided with a positioning member 23, in the embodiment of fig. 3, the positioning member 23 is arranged at the joint of the turning support member 22 and the turning support shaft 21, the positioning member 23 and the bearing seat 12 are respectively provided with a first positioning hole and a second positioning hole, when the turning support shaft 21 is turned to the positioning position, at least one hole of the first positioning hole and the second positioning hole is coaxial, and the turning position of the mounting table 9 is fixed by inserting the first positioning pin 3 into the coaxial hole.

In the embodiments of fig. 3 and 4, the second positioning element on the bearing seat 12 is of a four-hole structure, the first positioning element provided on the positioning element 23 on the turning support 22 is of a six-hole structure and a fourteen-hole structure, when the turning support 22 turns over, the holes of the first positioning element and the holes of the second positioning element are coaxial, the turning position can be fixed, the shape of the first positioning pin 3 is selected according to the number of coaxial holes or the angle between the holes, and the first positioning pin 3 in the above embodiments is a four-claw structure that can be inserted into the four holes of the first positioning hole through the four holes of the second positioning hole, as shown in fig. 5.

When the workbench needs to be turned over by a certain angle, the first positioning pins 3 on the two sides are pulled out to be away from the first positioning holes on the turning support member 22, but the first positioning pins do not leave the second positioning holes, namely, the bearing seat 12 is still in a closed state, the turning support member 22 is rotated to a required position, and then the first positioning pins 3 are inserted to complete the turning at a certain angle. It should be noted that the first positioning pin 3 in the embodiments of fig. 3 and 4 simultaneously functions to rotationally position and lock the bearing seat 12 closed, and the manner of locking the bearing seat 12 closed is not limited to this manner.

The table has six degrees of freedom in space, i.e., freedom of movement in the directions of three orthogonal axes x, y, and z and freedom of rotation about these three axes, as shown in fig. 4. To fully determine the position, i.e. positioning, of the table, these six degrees of freedom have to be locked. When the two overturning support shafts 21 can be respectively placed on the bearing seats 12, and the bearing seats 12 are closed, five degrees of freedom of movement of the mounting table 9 in the x-axis direction, movement of the y-axis direction, rotation around the y-axis, movement of the z-axis direction and rotation around the z-axis are limited, the use of the first positioning pin 3 limits the degree of freedom of rotation of the mounting table 9 around the x-axis, namely, on the worktable bracket, six degrees of freedom of translation and rotation of the mounting table 9 along the x, y and z are positioned.

The mounting table 9 can be positioned at a plurality of turning angles, the number of the turning angles which can be positioned is determined by the number of holes of the first positioning hole arranged on the bearing seat 12 and the number of holes of the second positioning hole arranged on the positioning piece 23, for example, when the first positioning piece is in a six-hole structure with even distribution, the angle between the holes is 60 degrees, the second positioning hole is a two-hole structure with 180 degrees up and down, or a four-hole structure which can be coaxial with the holes of the first positioning member, correspondingly, the first positioning pins 3 are respectively bolts matching with the two holes and the four holes, in this example, the mounting table 9 can be fixed on the horizontal plane, and can be fixed every 60 degrees of turning, namely, the mounting table 9 has six working angles which can be fixed, and fig. 4 is a schematic structural diagram of the working table of the embodiment of the invention when the working table is turned over by a certain angle (90 degrees).

The workbench of the present invention may further comprise two telescopic connecting rods 4 respectively disposed at the other two sides of the bracket body 11 where the bearing seat 12 is not disposed, as shown by the dashed oval frame in fig. 4 and fig. 6. Each telescopic connecting rod 4 comprises a first supporting block 41 with two telescopic ends and a first handle 42 capable of controlling the first supporting block to stretch and retract by pulling, and when the two connecting rods 4 are in an extending state, the first supporting block 41 is supported on two sides of the overturning supporting part 22; when the first handle 42 is pulled to enable the two connecting rods 4 to be in the contraction state, the overturning of the overturning support 22 is not influenced. When the workbench provided with the two telescopic connecting rods 4 is turned over, the first handle 42 of the connecting rod 4 on one side is pulled, as the first handle 42 on the left side in fig. 6, the first supporting block 41 on the left side of the mounting table 9 is supported to be contracted, the left side of the mounting table 9 is not subjected to upward supporting force any more, and the other side of the mounting table 9 is tilted accordingly. Since the turning support 22 connects the mount table 9 and the bearing housing 12, the mount table 9 can make a turning motion around the turning support shaft 21.

When the assembly of the parts is completed, the bearing housing 12 can be opened and the mounting table 9 connected to the tilting mechanism can be unloaded. However, manual unloading of the mounting station 9 is a laborious procedure when the total weight of the assembled product is excessive. The workbench can complete the self-unloading function by adding the self-unloading mechanism.

Specifically, the support body 11 of the workbench according to the present invention is further provided with a Y-shaped guide rail 5 and two pairs of sliding pins 25 on both sides of the bearing seat 12, the Y-shaped guide rail 5 is provided with a first sliding rail and a second sliding rail which are communicated with each other, and for convenience of description, several positions of the Y-shaped guide rail 5 are defined as A, B, C, E and F, as shown in fig. 6. The track of the AC section is a first sliding track, the EBCF section is a second sliding track, the first sliding track and the second sliding track are communicated with a point C, and the track at the point F is non-closed.

Accordingly, the turn support shaft 21 of the table of the present invention is detachably coupled to the turn support 22. As shown in fig. 5, the turning support shaft 21 can be inserted into a positioning member 23 disposed on the turning support member 22, the turning support shaft 21 and the positioning member 23 are provided with a threaded hole perpendicular to the turning support shaft 21, and a second positioning pin 21a is a bolt engaged with the threaded hole, so that the turning support shaft 21 and the turning support member 22 are fixedly connected into a whole by the second positioning pin 21 a.

Each pair of slide pins 25 is detachably connected to the side of the turning support 22 away from the mounting table 9 through the first and second slide rails, respectively, and each pair of slide pins 25 is detachably connected to both sides of one turning support 22, i.e., points a and B in fig. 5, through a pair of third positioning pins 25a, respectively. The sliding of the sliding pin 25 along the Y-shaped guide 5 slides the turning support 22 and the mounting table 9.

In the embodiment of the present invention, the workbench further comprises two first gas springs as the guide rail driving assembly 51, a descent control plate 6 disposed at the second sliding track, and a second gas spring as the descent control driving assembly 61, wherein a cylinder end of each first gas spring is detachably connected to one overturning supporting member 22, and the other end is rotatably connected to the bracket body 11; the cylinder end of the second gas spring as the descent drive assembly 61 is detachably connected to the descent control plate 6, and the other end is rotatably connected to the support body 11. The slow descending piece 6 has a shape matched with the radian of the sliding track, when the slow descending driving assembly 61 is connected with the slow descending piece 6, the slow descending piece 6 is in a working state, and the slow descending piece 6 narrows the second sliding track to slow down the sliding speed of the sliding pin 25 along the track. A free or self-locking type gas spring may be employed.

The self-unloading process of the workbench according to an embodiment of the invention is shown in fig. 8 to 11, and the self-unloading process is described as follows:

firstly, the mounting table 9 is in a horizontal position, the two telescopic connecting rods 4 are in an extending position, the two pairs of sliding pins 25 are connected with the two sides of the overturning support member 22 through the two pairs of third positioning pins 25a, the first positioning pin 3 and the second positioning pin 21a are drawn out, then the overturning support shaft 21 is drawn out to be separated from the overturning support member 22, and at the moment, the mounting table 9 is supported by the connecting rods 4 on the two sides. The cylinder end of each first gas spring is then connected to a flip support 22. In the embodiment of fig. 8, the cylinder end of the first gas spring is connected with a connecting piece 52 with a gap, and correspondingly, the overturning supporting piece 22 is provided with a bolt matched with the gap of the connecting piece 52 between the positioning piece 23 and the point B, and the bolt is inserted into the gap of the connecting piece 52.

Then, the first handle 42 of the one side link 4 is pulled, as shown in fig. 7, the first supporting block 41 supporting the left side of the mounting table 9 is retracted, the left side of the mounting table 9 is not subjected to upward supporting force any more, the other side of the mounting table 9 is guided by the first air spring serving as the rail driving assembly 51 to tilt upward along the Y-shaped rail 5, and the tilting process is shown in fig. 8. The connecting piece 52 can rotate around the connecting point of the cylinder end of the first air spring to ensure that the bolt cannot be separated from the notch in the upward tilting process of one side of the mounting platform 9. In the process of upwarping, the sliding pin 25 initially at the point a slides from the point a to the point C and then to the point B, the sliding pin 25 initially at the point B slides to the point E, and the track at the point E is not closed. When one side of the mounting platform 9 is tilted up to the highest point, namely the maximum length of the first air spring is reached, the connecting piece 52 at the cylinder end of the first air spring is taken down from the bolt of the overturning support member 22, because the connecting piece 52 is stressed in the whole process, if the overturning supporting shaft 21 and the mounting platform 9 have no supporting component except the first air spring, the connecting piece 52 is not easy to be taken down, in order to solve the technical problem, the workbench of the invention is provided with a telescopic hanging rack 7 above the connecting rod 4 at one side, the structure of the hanging rack 7 is similar to that of the connecting rod 4, and the hanging rack comprises a second supporting block 71 with two telescopic ends and a second handle capable of controlling the second supporting block to stretch and retract by pulling, as shown by a rectangular broken line frame in figure 4 and figure 10, in this embodiment, the hanging rack 7 and the connecting rod 4 at one end share one control handle, i.e. the first handle 42 and the second handle are combined into a whole, for simplifying the structure. Meanwhile, in order not to affect the tilting process of one side of the mounting table 9, the contact portion of the second supporting block 71 with the mounting table 9 is a circular arc, as shown in fig. 10, when the other side of the mounting table 9 tilts and contacts the second supporting block 71, the second supporting block 71 can automatically contract due to the force. When one side of the mounting platform 9 is tilted to the highest point, the hanging rack 7 returns to the extending state, the overturning support shaft 21 and the mounting platform 9 can be supported by the two overturning support pieces 22, and the connecting piece 52 of the first air spring is easily taken down at the moment.

Finally, the cylinder end of the second gas spring as the slow descending driving assembly 61 is connected to the slow descending piece 6, and the slow descending piece 6 is in a working state. And pulling the second handle to enable the second supporting block 71 to be in a contracted state, and enabling the overturning supporting shaft 21 and the mounting table 9 to slide downwards along the second sliding track of the Y-shaped guide rail 5 through the sliding pin 25 under the action of gravity until the overturning supporting shaft and the mounting table slide out of the unclosed opening F of the Y-shaped guide rail 5, as shown in fig. 11, as the slow descending piece 6 in a working state enables the second sliding track of the Y-shaped guide rail 5 to be narrowed, the sliding speed of the sliding pin 25 along the track is reduced, damage to the mounting table 9 when the mounting table contacts the ground due to too fast sliding speed is avoided, and thus the self-service unloading process is completed.

The Y-shaped guide rail 5, the guide rail driving assembly 51 and the slow descending assembly form the self-service unloading mechanism of the workbench, the self-service unloading function of the workbench is realized, and in the self-service unloading process, no electric support is needed, so that a power supply is not needed to be installed, and the cost is saved. In order to enable the stress on two sides of the mounting table 9 to be more uniform in the self-unloading process, slow descending assemblies can be arranged on the two Y-shaped guide rails of the workbench.

As mentioned above, when the heavy parts produced, installed or maintained on the worktable of the present invention are heavy, the specifications of the first gas spring to be used, including the opening length l (mm), the stroke s (mm), and the minimum extension force F1(N) of the gas spring, have reached the load-bearing requirement. In the embodiment of fig. 3 to 11, taking an AGV assembled on site as an example, the AGV has a weight of 130kg to 150kg after the working platform is assembled, the width of the working platform 9 of the AGV, i.e. the width of the side of the turnover support 22, is 600mm, and the first gas spring selected is a free gas spring: l is 730mm, S is 305mm, and the pressure is 80-300 kg; the second gas spring is a free gas spring: l is 390mm, S is 140mm, and the pressure is 80-300 kg. A pressure of 80-300kg means that the pressure of the gas spring is brought to any pressure of 80-300kg by adding gas in the gas spring.

According to a gas spring installation force value formula: f1 ═ GHk/(Bn), where F1 is the minimum extension force; g is lifting gravity; h is the distance of the center of gravity with the rotary center of gravity; b is an effective force arm when the gas spring lever arm extends; n is the number of the gas springs; k is a safety factor, typically 1.1.

In the example, where H (1/2 × the width of the table 9) is 300mm, two first air springs are used, n being 2, and when the AGV weighs 135kg, the formula is given:

F1＝135*300*1.1/(90*2)＝247.5kg

the pressure of the first air spring selected in the embodiment is 80-300kg, and the required minimum stretching force is 247.5 kg.

The workbench can be additionally lifted to deal with workpieces with different thicknesses and sizes and is convenient to move. As shown in fig. 1, the workbench of the present invention further comprises four liftable bracket legs 13 installed at the bottom of the supporting end of the bracket of the workbench. The lifting support legs 13 can be adjusted according to different requirements of the distance between the mounting platform 9 and the ground. In the embodiment shown in fig. 1, the support end of the worktable bracket is four hollow bottom rods, each liftable bracket leg 13 can be inserted into the hollow interior of each bottom rod, and the liftable bracket legs 13 are fastened by a fastening bolt to be inserted into the hollow interior of the bottom rods. When the height of the lifting workbench is required, the fastening bolt is taken out, the lifting support leg 13 is adjusted to the required height, and then the lifting support leg is fixed by the fastening bolt.

In practical use, a workbench is required for mechanical assembly of parts, the workbench is required to be moved for subsequent procedures such as debugging of the installed product, and in order to enable the workbench to be more flexible, the workbench further comprises four wheels 14 installed at the bottom of the support end of the workbench support. Meanwhile, in order to further enhance the stability of the workbench of the invention in use, a wheel locking lever 15 is added on at least one wheel 14, the wheel locking lever 15 comprises a wheel locking lever bracket and a blocking piece arranged on the wheel locking lever bracket, the wheel locking lever bracket is rotatably connected with the wheel shaft of the wheel 41, and when the wheel locking lever bracket rotates to the point that the blocking piece contacts the ground, the wheel locking lever 15 is in a locking position. The wheel locking bar 15 prevents the movement of the table due to the sliding of the wheels 14.

In summary, the invention provides a workbench, which comprises a workbench support and a turnover mechanism, wherein the workbench support comprises a support body and bearing seats with opening-closing structures at two sides, the turnover mechanism comprises two turnover support shafts and two turnover support members, the workbench is fixedly connected with an installation platform through the turnover support members, free turnover and positioning of the installation platform are realized through the cooperation of the turnover support shafts and the bearing seats, and meanwhile, the opening-closing structures of the bearing seats facilitate loading and unloading of an installation platform; the Y-shaped guide rail, the guide rail driving assembly and the slow descending assembly form the self-unloading mechanism of the workbench, so that the workbench can realize the self-unloading function. The overturning, positioning and self-help unloading operation of the workbench can be easily completed by one worker, no electric power support is needed, and no power supply is needed to be installed, so that the workbench is not limited by a field power supply, and the cost is saved; the movable workbench is more flexible, the assembly of parts to subsequent debugging can be completed on one workbench, and the whole installation and the transportation in the debugging process are facilitated.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A workbench is characterized by comprising a workbench bracket and a turnover mechanism;

the workbench support comprises a support body (11) and two bearing seats (12) which are oppositely arranged on two sides of the support body (11) and have an open-close structure;

the turnover mechanism comprises two turnover support shafts (21) and two turnover support pieces (22) which are detachably connected with the two turnover support shafts (21), and the two turnover support pieces (22) can be fixedly connected with two opposite sides of the mounting table (9) respectively;

when the bearing seats (12) are in an open state, the two overturning support shafts (21) can be respectively placed in the bearing seats (12) at two sides, and when the bearing seats (12) are in a closed state, the overturning support shafts (21) rotate to drive the mounting table (9) to rotate through the overturning supporting piece (22);

the workbench further comprises two telescopic connecting rods (4), the two telescopic connecting rods (4) are respectively arranged on the other two sides of the support body (11), the two connecting rods (4) are supported on two sides of the overturning supporting piece (22) when in an extending state, and the rotation of the overturning supporting piece (22) is not influenced when the two connecting rods (4) are in a contracting state;

the support body (11) is provided with Y-shaped guide rails (5) and two pairs of sliding pins (25) on two sides of the bearing seat (12), the Y-shaped guide rails (5) are provided with a first sliding rail and a second sliding rail which are communicated with each other, the side, close to the ground, of the second sliding rail is in an open state, each pair of sliding pins (25) respectively penetrate through the first sliding rail and the second sliding rail and detachably connected with one side, away from the mounting table (9), of the overturning supporting piece (22), the sliding pins (25) drive the overturning supporting piece (22) and the mounting table (9) to slide along the sliding of the Y-shaped guide rails (5), and the sliding pins (25) penetrating through the first sliding rails slide into the second sliding rails.

2. The workbench according to claim 1, further comprising a first positioning pin (3), wherein a positioning member (23) is disposed at a joint of the turnover support member (22) and the turnover support shaft (21), the positioning member (23) and the bearing seat (12) are respectively provided with a first positioning hole and a second positioning hole, when the turnover support shaft (21) is turned to a positioning position, at least one hole is coaxial with the first positioning hole and the second positioning hole, and the first positioning pin (3) can be inserted into the coaxial holes.

3. The table of claim 1, wherein: each overturning support member (22) comprises two flat plates (24) which are positioned on the same plane, and two opposite sides of the mounting table (9) are fixedly connected with the two flat plates (24) of one overturning support member (22) respectively.

4. The table of claim 2, wherein: the overturning supporting shaft (21) is detachably connected with the positioning piece (23) through a second positioning pin (21 a).

5. The table of claim 1, further comprising at least one rail drive assembly (51), said rail drive assembly (51) being rotatably connected to said frame body (11) at one end and removably connected to one of said flip supports (22) at the other end.

6. The table of claim 5, wherein: the overturning device comprises two guide rail driving assemblies (51), wherein the guide rail driving assemblies (51) are gas springs, and the cylinder ends of the gas springs are detachably connected to one overturning supporting piece (22).

7. The workbench according to claim 1, further comprising one or two sets of slow-descending assemblies, each set of slow-descending assembly comprises a slow-descending piece (6) and a slow-descending driving assembly (61) which are arranged at the second sliding track, one end of the slow-descending driving assembly (61) is rotatably connected with the bracket body (11), the other end of the slow-descending driving assembly is detachably connected with one of the slow-descending pieces (6), the slow-descending piece (6) has a shape matched with the radian of the sliding track, when the slow-descending driving assembly (61) is connected with the slow-descending piece (6), the slow-descending piece (6) is in a working state, the slow-descending piece (6) narrows the second sliding track, and the sliding speed of the sliding pin (25) along the sliding track is reduced.

8. The table of claim 7, wherein: the slow descending driving assembly (61) is a gas spring, and the cylinder end of the gas spring is detachably connected to one slow descending piece (6).

9. Worktable according to claim 5, further comprising a telescopic hanger (7), said hanger (7) being adapted to support said tilting mechanism in an extended position by means of two of said tilting supports (22).

10. The workbench according to claim 1, further comprising four liftable support legs (13) mounted at the bottom of the support end of the workbench support.

11. The workbench according to claim 10, further comprising four fastening bolts, wherein the support end of the workbench support is provided with four hollow bottom rods, each liftable support leg (13) can be inserted into the hollow interior of each bottom rod, and the length of the insertion of the liftable support leg (13) into the hollow interior of the bottom rod can be adjusted by adjusting the fastening position of the fastening bolt on the bottom rod.