An electric wood milling support and parallel lifting locking method thereof

Abstract

The present application belongs to the technical field of woodworking tools, and particularly relates to an electric wood milling support and a parallel lifting locking method thereof. The support comprises a support body, a lifting mechanism, and a chassis arranged at the bottom of the support body. The lifting mechanism is arranged below the support body and comprises a driving shaft, a first driven shaft, a second driven shaft, a connecting rod, two third connecting rods, two fourth connecting rods, and a roller mounting plate. The chassis, the driving shaft, the first driven shaft, and the connecting rod form a reverse parallelogram mechanism. The roller mounting plate is connected with the first driven shaft and the second driven shaft through the two third connecting rods and the two fourth connecting rods, and the chassis, the first driven shaft, the second driven shaft, and the roller mounting plate form a parallelogram mechanism. When the driving shaft rotates, the reverse parallelogram mechanism drives the first driven shaft to rotate, and the parallelogram mechanism synchronously drives the second driven shaft to rotate, so that the rollers on the roller mounting plate synchronously lift with the two rollers on the driving shaft.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of woodworking tools, and particularly relates to an electric wood milling support and a parallel lifting locking method thereof. BACKGROUND

[0002] Currently, movable electric wood milling supports generally adopt cam control universal wheel lifting to realize movement, and have the following disadvantages: the support is inclined during lifting, and needs to be stepped multiple times before and after moving, and needs to be lifted by the foot when fixed, which is complicated to operate. SUMMARY

[0003] The present application provides an electric wood milling support and a parallel lifting locking method thereof, which solves the problems in the prior art.

[0004] The technical scheme adopted by the present application to solve the technical problem is an electric wood milling support, comprising a support body, four supporting legs, three rollers, a lifting mechanism, and a locking mechanism, wherein:

[0005] A top support for mounting a table plate is arranged at the top of the support body, a bottom support is arranged at the bottom of the support body, the top support and the bottom support are connected through four supporting legs, the supporting legs are adjustably mounted at the bottom end of the supporting legs, and the bottom support is provided with a locking mechanism support at the bottom;

[0006] The three rollers are arranged below the bottom support;

[0007] The lifting mechanism is arranged below the bottom support, and the lifting mechanism comprises a driving shaft, a first driven shaft, a second driven shaft, a connecting rod, two third connecting rods, and two fourth connecting rods;

[0008] The driving shaft, the first driven shaft, and the second driven shaft are arranged in parallel, and the driving shaft, the first driven shaft, and the second driven shaft are all rotationally connected with the side wall of the bottom support;

[0009] Two rollers are mounted on the driving shaft;

[0010] The connecting rod is arranged between the driving shaft and the first driven shaft, and the bottom support, the driving shaft, the first driven shaft, and the connecting rod form an inverse parallelogram mechanism;

[0011] The two third connecting rods are arranged in parallel on the first driven shaft;

[0012] The two fourth connecting rods are arranged in parallel on the second driven shaft, and the two fourth connecting rods are parallel to the two third connecting rods;

[0013] The four corners of the roller mounting plate are rotationally connected with one third connecting rod, another third connecting rod, one fourth connecting rod, and another fourth connecting rod, and another roller is mounted below the roller mounting plate; the bottom support, the first driven shaft, the second driven shaft, and the roller mounting plate form a parallelogram mechanism;

[0014] The locking mechanism is arranged in the locking mechanism support and connected with the driving shaft to limit the rotation position of the driving shaft;

[0015] When the driving shaft rotates, the first driven shaft is driven to rotate by the reverse parallelogram mechanism, and the second driven shaft is synchronously driven to rotate by the parallelogram mechanism, so that the rollers on the roller mounting plate are synchronously lifted and lowered with the two rollers on the driving shaft;

[0016] When the three rollers are lifted, the three rollers are in the chassis and the supporting legs are grounded to support; when the three rollers are lowered, the three rollers are grounded and the supporting legs are lifted.

[0017] As a further preferred embodiment of the present application, the locking mechanism comprises a locking claw, a swing shaft, a swing tongue adjusting pad, a swing tongue, and a torsional spring, wherein:

[0018] The locking claw is oval-shaped, a reserved passage is formed by cutting part of the locking claw from one side to the other side near the smaller end of the locking claw, the larger end of the locking claw is connected with the driving shaft, and the smaller end of the locking claw is in contact with the swing tongue;

[0019] The swing shaft is parallel to the driving shaft and is arranged horizontally in the locking mechanism support;

[0020] The swing tongue adjusting pad is sleeved on the swing shaft and is arranged on the side of the swing tongue away from the connecting rod;

[0021] One end of the swing tongue is sleeved on the swing shaft, and the other end of the swing tongue faces the driving shaft;

[0022] The torsional spring is sleeved on the swing shaft and is arranged on the side of the swing tongue facing the connecting rod, one end of the torsional spring abuts against the locking mechanism support, and the other end of the torsional spring presses against the swing tongue;

[0023] The torsional spring can be twisted and compressed, the torsional spring always provides a torsional force to rotate the swing tongue towards the driving shaft, and always provides a spring force to flip the swing tongue towards the swing tongue adjusting pad.

[0024] As a further preferred embodiment of the present application, the side of the swing tongue facing the ground is opened at the end of the swing tongue facing the driving shaft, the end of the side wall of the opening facing the driving shaft is bent towards the inside of the opening to form a hook, the outside of the side wall of the opening facing the swing shaft is bent from the opening to the end of the swing tongue connected with the swing shaft to form a bent part, and the inside of the side wall of the opening facing the swing shaft is sequentially provided with a groove and a circular arc block from the end of the opening to the inside of the opening, and the circular arc surface of the circular arc block faces the locking claw.

[0025] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0026] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0027] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0028] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0029] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0030] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0031] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0032] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0033] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0034] As a further preferred embodiment of the present application, the first connecting rod is arranged on the driving shaft and connected with the connecting rod; one end of the pedal arm is connected with the first connecting rod, and the other end of the pedal arm is provided with the pedal; after the pedal is stepped on, the pedal arm is stressed to drive the driving shaft connected with the first connecting rod to rotate.

[0035] Stop stepping on the pedal, lock the hanging claw down, and swing the tongue down under the action of the torsion spring. The smaller end of the locking claw slides into the groove in the opening. The end of the bent part of the swing tongue is in the reserved channel of the locking claw. The groove and the reserved channel cooperate to lock the locking claw in the opening of the swing tongue. The locking of the locking mechanism is completed.

[0036] Meanwhile, during the rotation of the driving shaft, the first driven shaft and the second driven shaft rotate synchronously, and the two third connecting rods connected with the first driven shaft rotate with the first driven shaft, and the two fourth connecting rods connected with the second driven shaft rotate with the second driven shaft, driving the roller mounting plate to always swing parallel to the plane where the first driven shaft and the second driven shaft are located, so that the two rollers on the driving shaft and the rollers on the roller mounting plate are lowered to the ground at the same time, and the supporting legs are in the air, and the locking of the three rollers is realized by the locking of the locking mechanism.

[0037] Case two, synchronously retracting the three rollers into the chassis while the supporting legs are on the ground:

[0038] Step on the pedal. During the stepping process, the pedal arm is forced to drive the driving shaft connected with the first connecting rod to rotate. The locking claw rotates upward and separates from the groove of the swing tongue. The swing tongue rotates downward under the action of the torsion spring. The hook on the swing tongue is in the reserved channel of the locking claw and in contact with the smaller end of the locking claw.

[0039] The locking claw continues to rotate upward, and the smaller end of the locking claw is in contact with the arc surface of the arc block.

[0040] Stop stepping on the pedal. The smaller end of the locking claw rotates downward along the arc surface of the arc block. The swing tongue is forced to flip to the side away from the locking claw, and the torsion spring is compressed. Until the locking claw separates from the swing tongue, the swing tongue is flipped inward by the elastic force of the torsion spring to contact the bent part of the swing tongue. At the same time, the locking claw is forced against the limiting block on the locking claw by the tension spring. At this time, the locking mechanism is unlocked.

[0041] Meanwhile, during the rotation of the driving shaft, the first driven shaft and the second driven shaft rotate synchronously, and the two third connecting rods connected with the first driven shaft rotate with the first driven shaft, and the two fourth connecting rods connected with the second driven shaft rotate with the second driven shaft, driving the roller mounting plate to always swing parallel to the plane where the first driven shaft and the second driven shaft are located, so that the two rollers on the driving shaft and the rollers on the roller mounting plate are lowered to the ground at the same time, and the supporting legs are in the air, and the locking of the three rollers is realized by the locking of the locking mechanism.

[0042] Through the above technical scheme, compared with the prior art, the present application has the following beneficial effects:

[0043] 1、The chassis, the driving shaft, the first driven shaft, and the connecting rod form a reverse parallelogram mechanism, and the chassis, the first driven shaft, the second driven shaft, and the roller mounting plate form a parallelogram mechanism; when the driving shaft rotates, the reverse parallelogram mechanism drives the first driven shaft to rotate, and the parallelogram mechanism synchronously drives the second driven shaft to rotate with the first driven shaft, so that the rollers on the roller mounting plate synchronously rise and fall with the two rollers on the driving shaft, thereby ensuring that the heights of the front and rear rollers of the support body are consistent.

[0044] 2、The present application has two working conditions, working condition one synchronously lowers the three rollers to the ground while the supporting legs are in the air, and working condition two synchronously retracts the three rollers into the chassis while the supporting legs are on the ground; one pedal stroke changes from working condition two to working condition one, and the second pedal stroke changes from working condition one to working condition two, thereby forming a cycle; the cycle process realized by the pedal strokes is realized through the linkage cooperation of the swing tongue and the locking claw. BRIEF DESCRIPTION OF DRAWINGS

[0045] The present application will be further described below in conjunction with the drawings and examples.

[0046] Figure 1 is a schematic diagram of the overall structure of the present application;

[0047] Figure 2 is a schematic diagram of the overall structure of the lifting mechanism of the present application;

[0048] Figure 3 is an initial state diagram of the lifting mechanism of the present application;

[0049] Figure 4 is a state diagram when the lifting mechanism of the present application enters working condition one after one pedal stroke;

[0050] Figure 5 is an initial position relationship diagram of the locking claw and the swing tongue of the present application;

[0051] Figure 6 is a position relationship diagram of the locking claw and the swing tongue during one pedal stroke of the present application;

[0052] Figure 7 is a position relationship diagram of the locking claw and the swing tongue when one pedal stroke of the present application approaches the limit position;

[0053] Figure 8 is a position relationship diagram of the locking claw and the swing tongue when one pedal stroke of the present application reaches the limit position;

[0054] Figure 9 is a position relationship diagram of the locking claw and the swing tongue after one pedal stroke of the present application is completed;

[0055] Figure 10 is a position relationship diagram of the locking claw and the swing tongue at the beginning of the second pedal stroke of the present application;

[0056] Figure 11 is the position relationship diagram of the locking hanging claw and the swing tongue when they are about to be separated after the invention is stepped on again;

[0057] Figure 12 is the position relationship diagram b of the locking hanging claw and the swing tongue when they are about to be separated after the invention is stepped on again;

[0058] Figure 13 is the overall structure diagram of the swing tongue of the invention;

[0059] Figure 14 is the overall structure diagram of the locking hanging claw of the invention;

[0060] Figure 15 is the position relationship diagram between the locking mechanism support and the chassis of the invention;

[0061] Figure 16 is the position relationship diagram of the structures on the driving shaft of the invention;

[0062] Figure 17 is the position relationship diagram of the structures on the first driven shaft of the invention;

[0063] Figure 18 is the position relationship diagram of the structures on the second driven shaft of the invention;

[0064] Figure 19 is the structure diagram a of the locking mechanism of the invention;

[0065] Figure 20 is the structure diagram b of the locking mechanism of the invention;

[0066] Figure 21 is the structure diagram of the lifting mechanism of the invention.

[0067] In the figure: 1, support body; 2, top bracket; 3, chassis; 4, support leg; 5, driving shaft; 6, first driven shaft; 7, second driven shaft; 8, connecting rod; 9, locking mechanism support; 10, locking hanging claw; 11, swing shaft; 12, swing tongue; 13, reserved channel; 14, opening; 15, hook; 16, bending part; 17, groove; 18, circular arc block; 19, third connecting bracket rod; 20, fixed plate; 21, first connecting bracket rod; 22, pedal arm; 23, pedal; 24, adjusting bolt; 25, torsional spring; 26, roller mounting plate; 27, universal wheel; 28, fixed wheel; 29, support foot; 30, inner hexagonal cylindrical head shoulder screw; 31, upper locking hanging claw limiting block; 32, lower locking hanging claw limiting plate; 33, swing tongue adjusting pad block; 34, tension spring; 35, swing tongue limiting screw; 36, second connecting bracket rod; 37, fourth connecting bracket rod. DETAILED DESCRIPTION

[0068] The application will be described in further detail below with reference to the drawings. These drawings are simplified schematic diagrams and only show the basic structure of the application in a schematic manner, and thus only show the components relevant to the application.

[0069] In the description of the application, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, and therefore cannot be understood as a limitation on the application. The specific dimensions used in the embodiments are only for the purpose of illustrating the technical solutions and do not limit the protection scope of the application. Embodiment

[0070] The embodiment provides a preferred embodiment, as shown in Figures 1 to 15 The bakelite milling support includes a support body 1, four supporting legs 29, three rollers, a lifting mechanism, and a locking mechanism.

[0071] The top of the support body 1 is provided with a top frame 2 for mounting a table plate, and the bottom is provided with a bottom frame 3, and the top frame 2 and the bottom frame 3 are connected by four supporting legs 4. The bottom of the bottom frame 3 is provided with a locking mechanism support 9, and the locking mechanism support 9 and the bottom frame 3 are of an integral structure.

[0072] In order to ensure that the support body 1 is stably placed on the ground and that the top frame 2 at the top of the support body 1 is always in a horizontal plane, the bottom of each supporting leg 4 is provided with a supporting leg 29, and the bottom surface of each of the four supporting legs 29 is a plane. The bottom surface of the four supporting legs 29 is in contact with the ground, so that the support body 1 is stably placed on the ground. In order to ensure that the bottom surface of the four supporting legs 29 can be in complete contact with the ground, a spherical pin is arranged at one end of the supporting leg 29 facing the supporting leg 4, so that the supporting leg 29 can automatically adjust to ensure that the bottom surface of the supporting leg 29 is in complete contact with the ground. In order to ensure that the top frame 2 is in a horizontal plane on uneven ground, the supporting leg 4 and the supporting leg 29 are adjustably connected, and preferably an adjusting bolt 24 is used to adjust the adjusting bolt 24 to ensure that the top frame 2 is always in a horizontal plane.

[0073] The lifting mechanism is arranged below the base frame 3, and comprises a driving shaft 5, a first driven shaft 6, a second driven shaft 7, a connecting rod 8, two third connecting rods 19, two fourth connecting rods 37, and a roller mounting plate 26. The driving shaft 5, the first driven shaft 6, and the second driven shaft 7 are arranged in parallel in sequence, and are rotatably connected to the side wall of the base frame 3. Two rollers are mounted on the driving shaft 5. The connecting rod 8 is arranged between the driving shaft 5 and the first driven shaft 6, and the base frame 3, the driving shaft 5, the first driven shaft 6, and the connecting rod 8 form a reverse parallelogram mechanism. The two third connecting rods 19 are arranged in parallel on the first driven shaft 6 and are welded to the first driven shaft 6. The two fourth connecting rods 37 are arranged in parallel on the second driven shaft 7 and are welded to the second driven shaft 7. The two fourth connecting rods 37 are parallel to the two third connecting rods 19. The roller mounting plate 26 is rotatably connected to one third connecting rod 19, another third connecting rod 19, one fourth connecting rod 37, and another fourth connecting rod 37 at the four corners, and another roller is mounted below the roller mounting plate 26. The base frame 3, the first driven shaft 6, the second driven shaft 7, and the roller mounting plate 26 form a parallelogram mechanism.

[0074] The locking mechanism support 9 has a C-shaped cross section, and is arranged close to the driving shaft 5. The locking mechanism is arranged in the locking mechanism support 9 and is connected to the driving shaft 5, thereby limiting the rotation position of the driving shaft 5.

[0075] Specifically, the locking mechanism comprises a locking claw 10, a swing shaft 11, a swing tongue adjusting pad 33, a swing tongue 12, and a torsional spring 25. The locking claw 10 has an oval shape, and a reserved passage 13 is formed by cutting part of the locking claw 10 from one side to the other side close to the smaller end of the locking claw 10. The larger end of the locking claw 10 is welded to the driving shaft 5, and the smaller end of the locking claw 10 is in contact with the swing tongue 12. The swing shaft 11 is parallel to the driving shaft 5 and is arranged horizontally in the locking mechanism support 9. The swing tongue adjusting pad 33 is sleeved on the swing shaft 11 and is located on the side of the swing tongue 12 away from the connecting rod 8. The torsional spring 25 is sleeved on the swing shaft 11 and is located on the side of the swing tongue 12 facing the connecting rod 8. One end of the torsional spring 25 abuts against the locking mechanism support 9, and the other end of the torsional spring 25 presses against the swing tongue 12 (specifically, the two legs of the torsional spring 25, or one leg of the torsional spring 25, are clamped on the swing tongue 12, and the other leg is clamped on the side wall of the locking mechanism support 9; one end of the bent part of the torsional spring 25 abuts against the locking mechanism support 9, and the other end presses against the swing tongue 12). The torsional spring 25 can be twisted and compressed, and always provides a torsional force to rotate the swing tongue 12 towards the driving shaft 5 and always provides a spring force to flip the swing tongue 12 towards the swing tongue adjusting pad 33.

[0076] The torsion spring 25 always gives the swing tongue 12 a force to swing downward, and drives the swing tongue 12 to rotate around the swing shaft 11 from top to bottom towards the locking claw 10. The swing tongue 12 is provided with a swing tongue adjusting pad 33 on the side away from the torsion spring 25, and the swing tongue adjusting pad 33 is threadedly connected with the swing shaft 11. The position of the swing tongue adjusting pad 33 on the swing shaft 11 is adjusted to limit the position of the swing tongue 12 on the swing shaft 11.

[0077] The swing tongue 12 is sleeved on the swing shaft 11 at one end, and the other end of the swing tongue 12 is towards the driving shaft 5. The side of the swing tongue 12 towards the ground is provided with an opening 14 near the end of the swing tongue 12 towards the driving shaft 5. The end of the side wall of the opening 14 towards the driving shaft 5 is bent inward to form a hook 15. The outer side of the side wall of the opening 14 towards the swing shaft 11 is bent to form a bending part 16 from the end of the opening 14 to the end of the swing tongue 12 connected with the swing shaft 11. The inner side of the side wall of the opening 14 towards the swing shaft 11 is sequentially provided with a groove 17 and a circular arc block 18 from the end of the opening 14 to the inside of the opening 14, and the circular arc surface of the circular arc block 18 is towards the locking claw 10.

[0078] The swing tongue 12 is provided with a swing tongue limiting screw 35 at the bottom of the side away from the locking claw 10 in the embodiment. When the pedal arm 22 is not under force, the swing tongue limiting screw 35 abuts against the inner wall of the locking mechanism support 9, so that the swing tongue limiting screw 35 determines the initial angle of the swing tongue 12. The initial angle of the swing tongue 12 can be changed by adjusting the length of the swing tongue limiting screw 35. The length of the swing tongue limiting screw 35 is required to ensure that the locking claw 10 can be completely separated from the swing tongue 12 after one cycle. The hole diameter of the opening at the connection between the swing tongue 12 and the swing shaft 11 is greater than the shaft diameter of the swing shaft 11, so that the swing tongue 12 can rotate around the swing shaft 11 and swing along the swing shaft 11.

[0079] The embodiment is also provided with an upper locking claw limiting block 31 and a lower locking claw limiting plate 32. The upper locking claw limiting block 31 is installed at a lower position inside the locking mechanism support 9, and the lower locking claw limiting plate 32 is installed at an upper position inside the locking mechanism support 9. The locking claw 10 rotates between the upper locking claw limiting block 31 and the lower locking claw limiting plate 32. When the pedal 23 reaches the highest position, the locking claw 10 rotates to abut against the upper locking claw limiting block 31. When the pedal 23 is depressed to the lowest position, the locking claw 10 rotates to abut against the lower locking claw limiting plate 32.

[0080] A roller is arranged below the roller mounting plate 26, and two rollers are arranged on the driving shaft 5. Preferably, the roller connected with the roller mounting plate 26 is a universal wheel 27, and the two rollers arranged on the driving shaft 5 are fixed wheels 28. The present embodiment is also provided with four fixing plates 20, and two fixing plates 20 in a group are used to connect the fixed wheels 28 with the driving shaft 5. Since the connection of the universal wheel 27 is movable, if the universal wheel 27 is connected with the first driven shaft 6 by the fixing plate 20, the universal wheel 27 cannot be parallel all the time during the lifting process, and the universal wheel 27 and the fixed wheel 28 will be high and low after landing, which will cause the object placed on the support body 1 to be inclined. In order to solve this problem, the present embodiment is provided with a parallelogram mechanism to ensure that the universal wheel 27 is always in a horizontal plane during the lifting process, and is still in a horizontal plane after landing, and is flush with the fixed wheel 28.

[0081] When the driving shaft 5 rotates, the anti-parallel four-bar linkage drives the first driven shaft 6 to rotate, and the parallel four-bar linkage drives the second driven shaft 7 to rotate synchronously with the first driven shaft 6, so that the rollers on the roller mounting plate 26 and the two rollers on the driving shaft 5 are lifted synchronously; when the three rollers are lifted, the three rollers are in the chassis 3, and the supporting leg 29 is landed to support; when the three rollers are lowered, the three rollers are landed, and the supporting leg 29 is lifted.

[0082] The present embodiment also includes a first connecting rod 21, a second connecting rod 36, a pedal arm 22, and a pedal 23. The first connecting rod 21 is welded on the driving shaft 5, and the first connecting rod 21 is rotatably connected with the connecting rod 8. The end of the connecting rod 8 away from the first connecting rod 21 is connected with the first driven shaft 6 through the second connecting rod 36, and preferably, the second connecting rod 36 is welded with the first driven shaft 6. One end of the pedal arm 22 is connected with the first connecting rod 21, and the pedal 23 is installed on the other end of the pedal arm 22. When the pedal 23 is stepped on, the pedal arm 22 will be stressed to drive the driving shaft 5 connected with the first connecting rod 21 to rotate. Preferably, the pedal arm 22 and the first connecting rod 21 are detachably connected.

[0083] The present embodiment also includes a tension spring 34, one end of which is connected with the first connecting rod 21 through a connecting piece, and the other end of which is connected with the outer wall of the locking mechanism support 9 through a connecting piece. Preferably, the connecting piece is a combination of an inner hexagonal cylindrical head shaft shoulder screw 30 and a lock nut. When the pedal arm 22 is not stressed, the tension spring 34 will pull the first connecting rod 21 connected with the pedal arm 22, so that the first connecting rod 21 returns to the initial position, i.e. the position of the first connecting rod 21 in the state that the tension spring 34 is not stressed.

[0084] The embodiment also includes a roller parallel lifting locking method using the electric wood milling support, the method includes two working conditions, working condition one synchronously lowers the three rollers to the ground while the support leg 29 is suspended, working condition two synchronously retracts the three rollers into the chassis 3 while the support leg 29 is grounded; one step from working condition two to working condition one, and the second step from working condition one to working condition two, thus forming a cycle, the specific method steps are as follows:

[0085] Working condition one, synchronously lowering the three rollers to the ground while the support leg 29 is suspended:

[0086] Continuously stepping on the pedal 23, the pedal arm 22 is forced to drive the driving shaft 5 connected with the first connecting rod 21 to rotate, in the process of rotating the driving shaft 5, the driving shaft 5 also drives the locking claw 10 to rotate upward, during which the smaller end of the locking claw 10 gradually moves to the opening 14 along the bending part 16 of the swing tongue 12, the swing tongue 12 is lifted and rotated upward, until the smaller end of the locking claw 10 moves to the critical position of the opening 14, the locking claw 10 will be separated from the opening 14 of the swing tongue 12;

[0087] Continuously stepping on the pedal 23 to the limit position, the locking claw 10 continues to rotate upward, the swing tongue 12 is rotated downward under the action of the torsional spring 25, until the locking claw 10 abuts against the hook 15;

[0088] Stopping stepping on the pedal 23, the tension spring 34 rebounds and pulls the first connecting rod 21 connected with the pedal arm 22, so that the driving shaft 5 reversely rotates to make the locking claw 10 rotate downward, at the same time, the swing tongue 12 is still rotated downward under the action of the torsional spring 25, the smaller end of the locking claw 10 slides into the groove 17 in the opening 14, the end of the bending part 16 of the swing tongue 12 is in the reserved passage 13 of the locking claw 10, the groove 17 and the reserved passage 13 cooperate to clamp the locking claw 10 in the opening 14 of the swing tongue 12, and the locking of the locking mechanism is completed.

[0089] At the same time, in the process of rotating the driving shaft 5, the first driven shaft 6 and the second driven shaft 7 rotate synchronously, and the two third connecting rods 19 connected with the first driven shaft 6 rotate with the first driven shaft 6, at the same time, the two fourth connecting rods 37 connected with the second driven shaft 7 rotate with the second driven shaft 7, the roller mounting plate 26 always swings parallel to the plane where the first driven shaft 6 and the second driven shaft 7 are located, so that the two rollers on the driving shaft 5 and the rollers on the roller mounting plate 26 are synchronously lowered to the ground while the support leg 29 is suspended, at this time, the support body 1 can be moved arbitrarily. That is, the locking of the three rollers in the lowered position is realized by the locking of the locking mechanism.

[0090] Working condition two, synchronously retracting the three rollers into the chassis 3 while the support leg 29 is grounded:

[0091] Pedal 23, in the process of stepping, pedal arm 22 force driven with the first connecting rod 21 connected to the driving shaft 5 rotation, locking the claw 10 upward rotation away from the swing tongue 12 groove 17, swing tongue 12 under the action of torsion spring 25 downward rotation, swing tongue 12 on the hook 15 in the reserved passage 13 of locking the claw 10 and the smaller end of the locking the claw 10 contact;

[0092] Locking the claw 10 continues to rotate upward, the smaller end of the locking the claw 10 and the arc surface of the arc block 18 contact;

[0093] Stop stepping pedal 23, the smaller end of the locking the claw 10 along the arc surface of the arc block 18 downward rotation, swing tongue 12 force to flip away from the locking the claw 10, while compressing torsion spring 25, until the locking the claw 10 from swing tongue 12 and the locking the claw 10, swing tongue 12 under the action of torsion spring 25 inward flip back to the contact state with the swing tongue 12 bending part 16, while the locking the claw 10 is locked on the locking the claw upper limit block 31 under the action of tension spring 34, at this time the locking mechanism is unlocked.

[0094] At the same time in the process of driving shaft 5 rotation, the first driven shaft 6 and the second driven shaft 7 synchronous rotation, and with the first driven shaft 6 connected with two third connecting rod 19 rotation with the first driven shaft 6 rotation, while the second driven shaft 7 connected with two fourth connecting rod 37 rotation with the second driven shaft 7 rotation, driving roller mounting plate 26 always parallel to the first driven shaft 6 and the second driven shaft 7 plane to swing, until the support 29 landing support, through the locking mechanism of the locking state to realize the two roller on the driving shaft 5 and the roller on the roller mounting plate 26 synchronous retracting to the chassis 3 inside at the same time the support 29 landing.

[0095] Those skilled in the art can understand that unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and unless defined as such, should not be interpreted in an idealized or overly formal sense.

[0096] The meaning of "and / or" described in the present application means that each single existence or both existences are included.

[0097] The meaning of "connection" described in the present application can be direct connection between components or indirect connection between components through other components.

[0098] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An electric wood moulder support, characterised in that: The support body (1), four supporting legs (29), three rollers, a lifting mechanism and a locking mechanism are included. The top frame (2) for mounting a platform is arranged on the top of the support body (1), and the bottom frame (3) is arranged on the bottom of the support body (1); the top frame (2) and the bottom frame (3) are connected by four supporting legs (4); the supporting legs (29) are adjustably arranged on the bottom end of the supporting legs (4); the locking mechanism support (9) is arranged on the bottom of the bottom frame (3). The three rollers are arranged below the bottom frame (3). The lifting mechanism is arranged below the bottom frame (3) and includes the driving shaft (5), the first driven shaft (6), the second driven shaft (7), the connecting rod (8), the third connecting rod (19), the fourth connecting rod (37) and the roller mounting plate (26). The driving shaft (5), the first driven shaft (6) and the second driven shaft (7) are arranged in parallel in sequence, and the driving shaft (5), the first driven shaft (6) and the second driven shaft (7) are all rotationally connected with the side wall of the bottom frame (3). Two rollers are arranged on the driving shaft (5). The connecting rod (8) is arranged between the driving shaft (5) and the first driven shaft (6); the bottom frame (3), the driving shaft (5), the first driven shaft (6) and the connecting rod (8) form a reverse parallelogram mechanism. The two third connecting rods (19) are arranged in parallel on the first driven shaft (6). The two fourth connecting rods (37) are arranged in parallel on the second driven shaft (7), and the two fourth connecting rods (37) are parallel to the two third connecting rods (19). The roller mounting plate (26) is rotationally connected with one third connecting rod (19), another third connecting rod (19), one fourth connecting rod (37) and another fourth connecting rod (37) at four corners, and another roller is arranged below the roller mounting plate (26); the bottom frame (3), the first driven shaft (6), the second driven shaft (7) and the roller mounting plate (26) form a parallelogram mechanism. The locking mechanism is arranged in the locking mechanism support (9) and connected with the driving shaft (5) to limit the rotation position of the driving shaft (5). When the driving shaft (5) rotates, the reverse parallelogram mechanism drives the first driven shaft (6) to rotate, and the parallelogram mechanism drives the second driven shaft (7) to rotate synchronously with the first driven shaft (6), so that the rollers on the roller mounting plate (26) and the two rollers on the driving shaft (5) are lifted synchronously. When the three rollers are lifted, the three rollers are arranged in the bottom frame (3), and the supporting legs (29) are arranged on the ground to support; when the three rollers are lowered, the three rollers are arranged on the ground, and the supporting legs (29) are lifted. The locking mechanism includes the locking claw (10), the swing shaft (11), the swing tongue adjusting pad (33), the swing tongue (12) and the torsional spring (25). The locking claw (10) is oval, a reserved passage (13) is formed by cutting part of the locking claw (10) from one side to the other side near the smaller end of the locking claw (10), the larger end of the locking claw (10) is connected with the driving shaft (5), and the smaller end of the locking claw (10) is in contact with the swing tongue (12). The swing shaft (11) is parallel to the driving shaft (5) and arranged horizontally in the locking mechanism support (9). The swing tongue adjusting pad (33) is sleeved on the swing shaft (11), and the swing tongue adjusting pad (33) is located on the side of the swing tongue (12) away from the connecting rod (8); One end of the swing tongue (12) is sleeved on the swing shaft (11), and the other end of the swing tongue (12) faces the driving shaft (5); The torsional spring (25) is sleeved on the swing shaft (11), and the torsional spring (25) is located on the side of the swing tongue (12) facing the connecting rod (8); one end of the torsional spring (25) abuts against the locking mechanism support (9), and the other end of the torsional spring (25) presses against the swing tongue (12); The torsional spring (25) can be twisted and compressed, and the torsional spring (25) always provides a torsional force for rotating the swing tongue (12) towards the driving shaft (5) and always provides an elastic force for overturning the swing tongue (12) towards the swing tongue adjusting pad (33); The side of the swing tongue (12) facing the ground is provided with an opening (14) near one end of the swing tongue (12) facing the driving shaft (5); the end of the side wall of the opening (14) facing the driving shaft (5) is bent inward to form a hook (15); the outer side of the side wall of the opening (14) facing the swing shaft (11) is bent to form a bending part (16) from the opening (14) to one end of the swing tongue (12) connected with the swing shaft (11); the inner side of the side wall of the opening (14) facing the swing shaft (11) is sequentially provided with a groove (17) and a circular arc block (18) from the end of the opening (14) to the inside of the opening (14); and the circular arc surface of the circular arc block (18) faces the locking claw (10). The first connecting rod (21) is arranged on the driving shaft (5) and rotationally connected with the connecting rod (8); one end of the pedal arm (22) is connected with the first connecting rod (21), and the other end of the pedal arm (22) is provided with the pedal (23); after the pedal (23) is stepped on, the pedal arm (22) is stressed to drive the driving shaft (5) connected with the first connecting rod (21) to rotate; The pulling spring (34) is connected with the first connecting rod (21) through a connecting piece at one end and connected with the outer side wall of the locking mechanism support (9) at the other end; The four fixed plates (20) are connected with the driving shaft (5), and each roller connected with the driving shaft (5) is connected with the driving shaft (5) through two fixed plates (20); The second connecting rod (36) is welded with the first driven shaft (6) at one end and rotationally connected with the connecting rod (8) at the other end.

2. An ebonite milled support according to claim 1, characterized in that: The rollers connected with the roller mounting plate (26) are universal wheels (27), and the rollers mounted on the driving shaft (5) are fixed wheels (28).

3. An ebonite milled support according to claim 1, characterized in that: Also include the locking hanging claw upper limit block (31) and the locking hanging claw lower limit plate (32), the locking hanging claw upper limit block (31) is installed in the inside lower position of the locking mechanism support (9), the locking hanging claw lower limit plate (32) is installed in the inside upper position of the locking mechanism support (9);When the pedal (23) reaches the highest position, the locking hanging claw (10) rotates to rest on the locking hanging claw upper limit block (31), when the pedal (23) is stepped to the lowest position, the locking hanging claw (10) rotates to rest on the locking hanging claw lower limit plate (32).

4. The parallel lifting locking method of the bakelite milling support according to claim 3, characterized in that, Including two kinds of working conditions, working condition one will three rollers be lowered to the ground at the same time while the support (29) is in the air, working condition two will three rollers be retracted into the chassis (3) at the same time while the support (29) is on the ground, the specific method steps are as follows: Working condition one, three rollers are lowered to the ground at the same time while the support (29) is in the air: Continue to step on the pedal (23), the pedal arm (22) is stressed to drive the driving shaft (5) connected with the first connecting rod (21) to rotate, in the process of rotating the driving shaft (5), the driving shaft (5) also drives the locking hanging claw (10) to rotate upward, during which the smaller end of the locking hanging claw (10) gradually moves to the opening (14) along the bending part (16) of the swing tongue (12), the swing tongue (12) is lifted up and rotated upward, until the smaller end of the locking hanging claw (10) moves to the critical position of the opening (14), the locking hanging claw (10) will be separated from the opening (14) of the swing tongue (12); Continue to step on the pedal (23) to the limit position, the locking hanging claw (10) continues to rotate upward, the swing tongue (12) is rotated downward under the action of the torsional spring (25), until the locking hanging claw (10) rests on the hook (15); Stop stepping on the pedal (23), the locking hanging claw (10) rotates downward, at the same time, the swing tongue (12) is still rotated downward under the action of the torsional spring (25), the smaller end of the locking hanging claw (10) slides into the groove (17) in the opening (14), the end of the bending part (16) of the swing tongue (12) will be in the reserved channel (13) of the locking hanging claw (10), the groove (17) and the reserved channel (13) cooperate to lock the locking hanging claw (10) in the opening (14) of the swing tongue (12), complete the locking of the locking mechanism; At the same time, in the process of rotating the driving shaft (5), the first driven shaft (6) and the second driven shaft (7) rotate synchronously, and the two third connecting rods (19) connected with the first driven shaft (6) rotate with the first driven shaft (6), at the same time, the two fourth connecting rods (37) connected with the second driven shaft (7) rotate with the second driven shaft (7), the roller mounting plate (26) always swings parallel to the plane where the first driven shaft (6) and the second driven shaft (7) are located, so as to realize that the two rollers on the driving shaft (5) and the rollers on the roller mounting plate (26) are lowered to the ground at the same time while the support (29) is in the air, and the locking of the three rollers in the lowered position is realized through the locking of the locking mechanism; Working condition two, three rollers are retracted into the chassis (3) at the same time while the support (29) is on the ground: Pedal (23), in the process of stepping, pedal arm (22) force driven with the first connecting rod (21) connected to the driving shaft (5) rotation, locking hook (10) upward rotation away from the swing tongue (12) groove (17), swing tongue (12) torsion spring (25) effect downward rotation, swing tongue (12) on the hook (15) in the reserved passage (13) of locking hook (10) and the smaller end of the locking hook (10) contact; Locking hook (10) continue to rotate upward, the smaller end of the locking hook (10) and the arc surface of the arc block (18) contact; Stop stepping pedal (23), the smaller end of the locking hook (10) along the arc surface of the arc block (18) downward rotation, swing tongue (12) force to the side away from the locking hook (10) flip, while compression torsion spring (25), until the locking hook (10) from the swing tongue (12) and the locking hook (10) away, swing tongue (12) torsion spring (25) inward flip back to the contact state of the bending part (16) of the swing tongue (12), while the locking hook (10) is affected by the tension spring (34) locking hook upper limit block (31), at this time the locking mechanism is unlocked; At the same time in the process of driving shaft (5) rotation, the first driven shaft (6) and the second driven shaft (7) synchronous rotation, and with the first driven shaft (6) connected to the two third connecting rod (19) with the first driven shaft (6) rotation and rotation, while the second driven shaft (7) connected to the two fourth connecting rod (37) with the second driven shaft (7) rotation and rotation, driving roller mounting plate (26) always parallel to the first driven shaft (6) and the second driven shaft (7) plane to swing, until the support (29) landing support, through the release of the locking mechanism of the locking state to realize the two roller on the driving shaft (5) and the roller on the roller mounting plate (26) synchronous folding in the chassis (3) at the same time the support (29) landing.

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