Protective support of parallel unit

Abstract

A protection support of a parallel unit belongs to the field of protection supports of parallel units and comprises a base, the base is in a U shape with a forward opening, clamping devices are arranged on the left side and the right side of the inner side of the base, the clamping devices are installed on the base in a sliding mode, a transmission device for driving the clamping devices to move is arranged on the base, and a baffle is connected to the transmission device. And shifting plates are arranged on one sides of the baffles, the shifting plates correspond to the baffles one to one, the shifting plates can be matched with the corresponding baffles in an abutting contact mode, and the shifting plates on the same side are fixedly provided with the same rotating rod. The device is simple in structure, ingenious in conception, capable of moving the parallel unit to the needed position without hoisting the parallel unit through large equipment, convenient to operate, capable of adjusting the placement height of the parallel unit according to needs, capable of meeting actual needs and suitable for popularization.

Description

Technical Field

[0001] The invention belongs to the field of protection brackets for parallel units, in particular to a protection bracket for parallel units. Background Art

[0002] A parallel unit refers to a refrigeration unit composed of two or more compressors connected in parallel and sharing a set of refrigeration circuits. Therefore, it is relatively large in size. When moving a parallel unit, it is generally moved by hoisting with large equipment. However, moving the parallel unit by hoisting is cumbersome and inconvenient. Therefore, we have designed a protective bracket that can facilitate the movement of parallel units. Summary of the invention

[0003] The invention provides a protective bracket for a parallel unit, which is used to solve the defects in the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A protective support for a parallel unit comprises a base, which is in a U-shape with an opening forward, and a clamping device is arranged on the left and right sides of the inner side of the base, and the clamping device is slidably installed on the base, and a transmission device for driving the clamping device to move is arranged on the base, and a baffle is connected to the transmission device, and a dial plate is respectively arranged on one side of the baffle, and the dial plate corresponds to the baffle one by one, and the dial plate can be in contact with the corresponding baffle for cooperation, and the same rotating rod is fixedly installed on the dial plate on the same side, and the rotating rod is rotatably installed on the base through several first support plates respectively, and a driving mechanism for driving the rotating rod to rotate synchronously is arranged on the base, and several second support plates are respectively fixedly installed on the rotating rod, and moving wheels are respectively rotatably installed on the second support plates.

[0006] A protective bracket for a parallel unit as described above, wherein the driving mechanism includes a worm gear, a worm gear is fixedly mounted on a rotating rod, a worm is meshingly provided on one side of the worm, and the worm is fixedly connected to the same rotating shaft, the rotating shaft is rotatably mounted on a base through a plurality of seat bearings, and a coaxial first hand wheel is fixedly mounted on the rotating rod.

[0007] In the protective bracket of a parallel unit as described above, two rings are rotatably mounted on the rotating shaft via a one-way bearing, the damping directions of the two one-way bearings are opposite, and a plurality of slots are respectively provided on the rings.

[0008] A protective bracket for a parallel unit as described above, wherein universal mechanisms are fixedly provided at the four corners of the top of the base, the universal mechanism comprising a sphere, a shell with openings on both sides being provided outside the sphere, the sphere slidingly contacting with the inner wall of the shell, vertical rods being fixedly installed on the sphere, springs being mounted outside the vertical rods, one end of the springs being fixedly connected to the sphere; one end of the second connecting rod is fixedly connected to the sphere in each universal mechanism, and the other end of the second connecting rod is also respectively connected to the universal mechanism, the shell on the lower side is fixedly connected to the base through several connecting rods, the springs on the lower side are respectively fixedly connected to the base, the shell on the upper side is respectively fixedly connected to the same top plate through connecting rods, the springs on the upper side are respectively fixedly connected to the top plate, sliding sleeves are respectively provided at both ends of the second connecting rod, the sliding sleeves and the sliding sleeves at the same height on the adjacent second connecting rods are hinged together through cross bars, the sliding sleeves on the left and right sides of the front side are not connected, and several third connecting rods are hingedly provided between the upper and lower cross bars on the same side.

[0009] As described above, in a protective bracket for a parallel unit, the sliding sleeves on the lower side of the second connecting rod are slidably installed on the corresponding second connecting rods, and the second nut is rotatably installed, the second connecting rod is provided with a thread and is connected with the second nut thread, the sliding sleeve on the upper side is fixedly installed on the corresponding second connecting rod, and the third connecting rods are all telescopic rods.

[0010] In the protective bracket of the parallel unit as described above, coaxial second hand wheels are fixedly mounted on the screw rods.

[0011] As described above, a protective bracket for a parallel unit, the clamping device includes a mounting plate, mounting plates are respectively provided on both sides of the base, the mounting plates are connected to the transmission device, grooves are respectively provided on the mounting plates, screws are rotatably installed in the grooves, one end of the screw extends to the outside of the mounting plate, both ends of the screw are respectively threadedly fitted with a first nut for installing, the first nut can only move on the screw but cannot rotate, the first connecting rod is respectively hinged on the first nut, the same clamping plate is hinged on the first connecting rod on the same side, a U-shaped groove is provided on the base, the opening of the U-shaped groove faces forward, and a plug-in plate is plugged into the U-shaped groove.

[0012] In the protective bracket of the parallel unit as described above, slide grooves are respectively provided in the grooves, and sliding blocks are respectively fixedly installed on the first nuts, and the sliding blocks are slidably installed in the corresponding slide grooves.

[0013] As described above, a protective bracket for a parallel unit, the transmission device includes gears, a plurality of dovetail sliders are fixedly installed on the mounting plate, dovetail slide grooves are provided on the base corresponding to the dovetail sliders, the dovetail sliders are slidably installed in the corresponding dovetail slide grooves, first tooth grooves are provided on the dovetail sliders, one side of the first tooth grooves is respectively meshed with gears, through grooves are provided on the base corresponding to the gears, the gears are respectively rotatably installed in the corresponding through grooves, and the baffle is fixedly installed on the corresponding gears.

[0014] In the protective bracket of the parallel unit as described above, a plurality of tooth blocks are arranged in the U-shaped groove, and corresponding second tooth grooves are arranged on the plug plate, and the tooth blocks mesh with the tooth grooves.

[0015] The advantages of the present invention are: the present invention has a simple structure and an ingenious design. The parallel units can be moved to a desired position without using large equipment to lift the parallel units. The operation is convenient and the height of the parallel units can be adjusted according to needs. The present invention can meet actual needs and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the state after the parallel unit is lifted; Figure 3 yes Figure 2 A top view of Figure 4 is a cross-sectional view of the base; Figure 5 It is a schematic diagram of the structure of a ring; Figure 6 It is a schematic diagram of the state of lifting the parallel unit.

[0018] 1. The worm gear of the embodiment of the present invention is a gear train, wherein the ... DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] A protective bracket for a parallel unit, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, it includes a base 1, which is a U-shape with an opening forward. Clamping devices are provided on the left and right sides of the inner side of the base 1. The clamping devices are slidably installed on the base 1. A transmission device for driving the clamping device to move is provided on the base 1. A baffle 15 is connected to the transmission device. A dial plate 16 is provided on one side of the baffle 15. The dial plate 16 corresponds to the baffle 15 one by one. The dial plate 16 can abut against and contact with the corresponding baffle 15. The dial plate 16 on the same side is fixedly installed with the same rotating rod 17. The rotating rod 17 is rotatably installed on the base 1 through several first support plates 18 respectively. The rotating rod 17 is rotatably connected to the reserved hole on the first support plate 18 through a bearing. The first support plate 18 is fixedly installed on the base 1. A driving mechanism for driving the rotating rod 17 to rotate synchronously is provided on the base 1. Several second support plates 19 are fixedly installed on the rotating rod 17. Moving wheels 20 are rotatably installed on the second support plates 19. Mounting grooves are provided on the second support plates 19, and the rotating shafts of the moving wheels 20 are rotatably installed in the mounting grooves through bearings. The present invention has a simple structure and an ingenious design. The parallel units can be moved to the desired position without the need to use large equipment to hoist the parallel units. The operation is convenient and the height of the parallel units can be adjusted as needed. The present invention can meet actual needs and is suitable for promotion. When using the present device, align the direction of the opening of the base 1 with the parallel unit, and push the present device to move so that the base 1 surrounds the parallel unit. The parallel unit is then clamped with a clamping device, and the driving mechanism drives the rotating rod 17 to rotate so that the rotating rod 17 drives the dial plate 16 to move in the direction of the baffle 15. The dial plate 16 gives the baffle 15 a thrust so that the baffle 15 drives the transmission device, and the transmission device drives the clamping device to move upward. The parallel unit is then installed through the clamping device, and then the driving machine drives the rotating rod 17 to rotate in the opposite direction. The rotating rod 17 drives the second support plate 19 to rotate so that the moving wheel 20 contacts the ground. At this time, the parallel unit can be installed through the clamping device. The parallel unit is moved by the moving wheel 20. After moving to the desired position, the driving mechanism continues to drive the rotating rod 17 to rotate in the opposite direction, so that it drives the second support plate 19 to rotate and contact the ground. The moving wheel 20 is no longer in contact with the ground, and the position of the device is no longer changed. By controlling the rotation angle of the second support plate 19, the position where the second support plate 19 contacts the ground is different, the inclination angle of the second support plate 19 is different, and the distance between the rotating rod 17 and the ground is different, then the distance between the parallel unit and the ground is different, thereby changing its height; when it needs to be moved again, the driving mechanism is used to rotate the moving wheel 20 until it contacts the ground.

[0021] Specifically, if Figure 3As shown, the driving mechanism of this embodiment includes a worm wheel 21, and the worm wheels 21 are fixedly installed on the rotating rods 17, respectively. The worm wheels 21 are coaxially arranged with the corresponding rotating rods 17, and a worm 22 is meshed and matched on one side of the worm 21. The worm 22 is fixedly connected to the same rotating shaft 24, and the rotating shaft 24 is coaxially arranged with the worm 22. The rotating shaft 24 is rotatably installed on the base 1 through a number of seat bearings, and a coaxial first hand wheel 23 is fixedly installed on the rotating rod 17. By rotating the first hand wheel 23, the rotating shaft 24 and the worm 22 are driven to rotate, and then the worm wheel 21 is driven to rotate, and finally the rotating rod 17 is driven to rotate together.

[0022] Specifically, Figure 3 As shown, two rings 30 are rotatably mounted on the rotating shaft 24 of the present embodiment through a one-way bearing, the damping directions of the two one-way bearings are opposite, and a plurality of slots 31 are respectively provided on the rings 30. When the rotating shaft 24 needs to be rotated, a long rod is inserted into the slot 31 on one of the rings 30, and then the long rod is swung back and forth. Since the ring 30 is rotatably mounted on the rotating shaft 24 through the one-way bearing, the long rod can drive the rotating shaft 24 to rotate by swinging in one direction, but cannot drive the rotating shaft 24 to rotate by swinging in the other direction, so that the reciprocating swing of the long rod can only drive the rotating shaft 24 to rotate in one direction. When the rotating shaft 24 needs to rotate in the other direction, the long rod is inserted into the slot 31 on the other ring 30, and then swung back and forth. In addition, according to the principle of lever, the ring 30 can be driven to rotate by the long rod with less effort, which is convenient for use.

[0023] Further, such as Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, the four corners of the top of the base 1 described in this embodiment are respectively fixed with universal mechanisms, the universal mechanisms include a ball 40, a shell 41 with openings on both sides is provided outside the ball 40, the ball 40 is in sliding contact with the inner wall of the shell 41, and a vertical rod 42 is respectively fixedly installed on the ball 40, and a spring 43 is sheathed outside the vertical rod 42, and one end of the spring 43 is fixedly connected to the ball 40; one end of the second connecting rod 44 is respectively fixedly connected to the ball 40 in each universal mechanism, and the other end of the second connecting rod 44 is also connected to the universal mechanism, and the other end of the second connecting rod 44 is fixedly connected to the corresponding ball 40 on the upper side, and the shell 41 on the lower side is fixedly connected through several connecting rods. The base 1 is connected, the springs 43 on the lower side are fixedly connected to the base 1, the shell 41 on the upper side is fixedly connected to the same top plate 45 through connecting rods, the springs 43 on the upper side are fixedly connected to the top plate 45, and the two ends of the second connecting rod 44 are respectively provided with sliding sleeves 46, the sliding sleeve 46 and the sliding sleeve 46 at the same height on the adjacent second connecting rod 44 are hinged together through a cross bar 47, and the two ends of the cross bar 47 are respectively hinged to the corresponding sliding sleeves 46 through a hinge shaft, and the sliding sleeves 46 on the left and right sides of the front side are not connected, and a plurality of third connecting rods 48 are hinged between the upper and lower cross bars 47 on the same side, and the two ends of the third connecting rod 48 are respectively connected to the corresponding cross bars 47 through a hinge shaft. When an external force hits the top plate 45 or the second connecting rod 44, the sphere 40 rotates in the corresponding shell 41, causing the vertical rod 42 to tilt, the spring 43 to deform accordingly, and the second connecting rod 44 to tilt accordingly. Then, through the transmission of the cross bar 47 and its hinge shaft, the other second connecting rods 44, cross bar 47 and third connecting rod 48 are also driven to tilt accordingly, so that all the spheres 40 drive the springs 43 to deform, so that when all the springs 43 tend to reset themselves after deformation, the second connecting rod 44 is prevented from tilting, thereby absorbing the impact force.

[0024] Furthermore, Figure 1 , Figure 2 , Figure 6 As shown, in this embodiment, the sliding sleeve 46 on the lower side of the second connecting rod 44 is respectively slidably installed on the corresponding second connecting rod 44, and the second nut 50 is rotated to install. The second connecting rod 44 is provided with a thread and is threadedly connected with the second nut 50. The second nut 50, the sliding sleeve 46 and the corresponding second connecting rod 44 are coaxially arranged. The sliding sleeve 46 located on the upper side is fixedly installed on the corresponding second connecting rod 44, and the third connecting rod 48 is a telescopic rod. The second nut 50 is rotated, and the second nut 50 rotates to drive the corresponding sliding sleeve 46 to move upward or downward along the corresponding vertical rod 42, thereby driving the lower side cross bar 47 to move, and the third connecting rod 48 is correspondingly extended or shortened to adjust the distance between the upper and lower cross bars 47, thereby avoiding interference between the cross bars 47 and the cables on the parallel unit.

[0025] Furthermore, Figure 3As shown, the screw rod 4 of this embodiment is respectively fixedly mounted with a coaxial second hand wheel 60. Rotating the screw rod 4 by the second hand wheel 60 is more convenient and labor-saving.

[0026] Furthermore, Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, the clamping device described in this embodiment includes a mounting plate 2, mounting plates 2 are respectively provided on both sides of the base 1, the mounting plate 2 is connected to the transmission device, grooves 3 are respectively provided on the mounting plate 2, the opposite side and the top of the groove 3 are connected to the outside, a screw 4 is rotatably installed in the groove 3, one end of the screw 4 extends to the outside of the mounting plate 2, one end of the screw 4 is rotatably connected to the reserved hole on the mounting plate 2 through a bearing, and the other end of the screw 4 is rotatably installed on the inner wall of the groove 3 through a bearing, and the two ends of the screw 4 are respectively threadedly fitted with a first nut 5, the first nut 5 can only move on the screw 4 and cannot rotate, the first nut 5 is respectively hinged on the first connecting rod 6, and the same clamping plate 7 is hinged on the first connecting rod 6 on the same side, a U-shaped groove 8 is provided on the base 1, the opening of the U-shaped groove 8 faces forward, and an insert plate 9 is inserted and fitted in the U-shaped groove 8. Rotate the screw rod 4, which drives the first nuts 5 at both ends thereof to move toward each other, so that the first connecting rod 6 extends and drives the clamping plate 7 to approach the parallel unit until the clamping plate 7 contacts the channel steel at the bottom of the parallel unit. Then, the transmission device drives the clamping device to move upward, so that the clamping plate 7 drives the parallel unit to move upward, and the parallel unit is lifted. Then, insert the plug plate 9 into the U-shaped groove 8 so that the plug plate 9 supports the parallel unit, and the installation of the parallel unit is completed.

[0027] Furthermore, Figure 3 As shown, in the embodiment, the grooves 3 are provided with slide grooves 80, and the first nuts 5 are fixed with sliders 81, which are slidably installed in the corresponding slide grooves 80. Under the restriction of the sliders 81 and the slide grooves 80, the first nut 5 cannot rotate, so that the first nut 5 cannot be driven to rotate when the screw rod 4 rotates, so that the first nut 5 can only move along the screw rod 4.

[0028] Furthermore, Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, the transmission device described in this embodiment includes a gear 13, and several dovetail sliders 10 are fixedly installed on the mounting plate 2 respectively. A dovetail groove 11 is provided on the base 1 corresponding to the dovetail slider 10. The dovetail slider 10 is slidably installed in the corresponding dovetail groove 11. The dovetail slider 10 can only slide up and down in the dovetail groove 11. A first tooth groove 12 is provided on the dovetail slider 10, and a gear 13 is meshed and matched on one side of the first tooth groove 12. A through groove 14 is provided on the base 1 corresponding to the gear 13, and the gears 13 are rotatably installed in the corresponding through groove 14. The gears 13 are rotatably installed on the coaxial rotating shaft through bearings, and both ends of the rotating shaft are fixedly connected to the inner wall of the corresponding through groove 14, and the baffle 15 is fixedly installed on the corresponding gear 13. The driving mechanism drives the rotating rod 17 and the paddle plate 16 to rotate, and when the baffle plate 15 is thrusted, the baffle plate 15 and the gear 13 are driven to rotate, and the gear 13 drives the dovetail slider 10 to move upward, and the dovetail slider 10 drives the mounting plate 2 to move upward, and the clamping device moves upward, and the parallel unit is lifted, so that the installation of the parallel unit is completed conveniently.

[0029] Furthermore, as shown in the figure, the U-shaped groove 8 of this embodiment is provided with a plurality of tooth blocks 70, and the insert plate 9 is provided with a corresponding second tooth groove, which is not shown, and the tooth blocks 70 are meshed with the tooth groove. Under the meshing cooperation between the tooth groove and the tooth blocks 70, the insert plate 9 can be prevented from moving out of the U-shaped groove 8, thereby increasing stability.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective support for a parallel unit, comprising a base (1), the base (1) being in a U-shape with an opening forward, a clamping device being provided on the left and right sides of the inner side of the base (1), the clamping device being slidably mounted on the base (1), and characterized in that: The base (1) is provided with a transmission device for driving the clamping device to move, the transmission device is connected with a baffle (15), one side of the baffle (15) is respectively provided with a dial plate (16), the dial plate (16) corresponds to the baffle (15) one by one, the dial plate (16) can be in contact with the corresponding baffle (15), the dial plate (16) on the same side is fixedly mounted with the same rotating rod (17), the rotating rod (17) is rotatably mounted on the base (1) through a plurality of first supporting plates (18), the base (1) is provided with a driving mechanism for driving the rotating rod (17) to rotate synchronously, a plurality of second supporting plates (19) are respectively fixedly mounted on the rotating rod (17), and moving wheels (20) are respectively rotatably mounted on the second supporting plates (19).

2. The protective bracket of a parallel unit according to claim 1, characterized in that: The driving mechanism comprises a worm wheel (21), the worm wheels (21) are fixedly mounted on the rotating rods (17), a worm (22) is meshingly provided on one side of the worm (21), the worm (22) is fixedly connected to a rotating shaft (24), the rotating shaft (24) is rotatably mounted on the base (1) through a plurality of seat bearings, and a coaxial first hand wheel (23) is fixedly mounted on the rotating rod (17).

3. The protective bracket of a parallel unit according to claim 2, characterized in that: Two circular rings (30) are rotatably mounted on the rotating shaft (24) via a one-way bearing. The damping directions of the two one-way bearings are opposite. A plurality of slots (31) are respectively provided on the circular rings (30).

4. The protective bracket of a parallel unit according to claim 1, characterized in that: The four corners of the top of the base (1) are respectively fixed with universal mechanisms, the universal mechanisms comprising a sphere (40), a shell (41) with openings on both sides is arranged outside the sphere (40), the sphere (40) and the inner wall of the shell (41) are in sliding contact, a vertical rod (42) is respectively fixedly installed on the sphere (40), a spring (43) is arranged outside the vertical rod (42), one end of the spring (43) is fixedly connected to the sphere (40); one end of the second connecting rod (44) is respectively fixedly connected to the sphere (40) in each universal mechanism, and the other end of the second connecting rod (44) is also respectively connected to the universal mechanism, and the lower shell (41) is in sliding contact with the inner wall of the shell (41). ) is fixedly connected to the base (1) through several connecting rods, the springs (43) on the lower side are respectively fixedly connected to the base (1), the shell (41) on the upper side is respectively fixedly connected to the same top plate (45) through connecting rods, the springs (43) on the upper side are respectively fixedly connected to the top plate (45), and the two ends of the second connecting rod (44) are respectively provided with sliding sleeves (46), and the sliding sleeves (46) and the sliding sleeves (46) at the same height on the adjacent second connecting rod (44) are hinged together through a cross bar (47), and the sliding sleeves (46) on the left and right sides of the front side are not connected, and a plurality of third connecting rods (48) are hingedly provided between the upper and lower cross bars (47) on the same side.

5. The protective bracket of a parallel unit according to claim 4, characterized in that: The sliding sleeves (46) on the lower side of the second connecting rod (44) are respectively slidably installed on the corresponding second connecting rod (44) and are rotatably installed with the second nut (50). The second connecting rod (44) is provided with a thread and is threadably connected with the second nut (50). The sliding sleeves (46) on the upper side are fixedly installed on the corresponding second connecting rod (44). The third connecting rods (48) are all telescopic rods.

6. The protective bracket of a parallel unit according to claim 1, characterized in that: A coaxial second hand wheel (60) is fixedly mounted on each of the screw rods (4).

7. The protective bracket of a parallel unit according to claim 1, characterized in that: The clamping device comprises a mounting plate (2), mounting plates (2) are respectively provided on both sides of the base (1), the mounting plates (2) are connected to the transmission device, grooves (3) are respectively provided on the mounting plates (2), a screw rod (4) is rotatably installed in the groove (3), one end of the screw rod (4) extends to the outside of the mounting plate (2), both ends of the screw rod (4) are respectively threadedly fitted with a first nut (5), the first nut (5) can only move on the screw rod (4) and cannot rotate, the first nut (5) is respectively hinged to the first connecting rod (6), the first connecting rod (6) on the same side is hinged to the same clamping plate (7), a U-shaped groove (8) is provided on the base (1), the opening of the U-shaped groove (8) is forward, and a plug plate (9) is plugged and fitted in the U-shaped groove (8).

8. The protective bracket of the parallel unit according to claim 7, characterized in that: The grooves (3) are respectively provided with sliding grooves (80), and sliding blocks (81) are respectively fixedly installed on the first nuts (5), and the sliding blocks (81) are slidably installed in the corresponding sliding grooves (80).

9. The protective support for a parallel unit according to claim 7, characterized in that: The transmission device comprises a gear (13), a plurality of dovetail sliders (10) are fixedly mounted on the mounting plate (2), a dovetail slide groove (11) is provided on the base (1) corresponding to the dovetail slider (10), the dovetail slider (10) is slidably mounted in the corresponding dovetail slide groove (11), a first tooth groove (12) is provided on the dovetail slider (10), one side of the first tooth groove (12) is respectively meshed with a gear (13), a through groove (14) is provided on the base (1) corresponding to the gear (13), the gear (13) is rotatably mounted in the corresponding through groove (14), and a baffle (15) is fixedly mounted on the corresponding gear (13).

10. The protective bracket of a parallel unit according to claim 7, characterized in that: A plurality of tooth blocks (70) are arranged in the U-shaped groove (8), and a corresponding second tooth groove is provided on the inserting plate (9), and the tooth blocks (70) mesh with the tooth groove.

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