CN208972848U - A kind of Combined movable research and teaching workbench - Google Patents

Abstract

A kind of Combined movable research and teaching workbench, including two pieces of desktops, vertical support rod is fixedly mounted in four corners of desktop bottom surface, movable pulley is fixedly mounted in the lower end of support rod, pushing hands is fixedly mounted in the outside of desktop, strip groove is opened up on the inside of one of desktop, front and rear sides inside strip groove open up groove, the outside of groove is equipped with push rod, one end of push rod is round end, the other end of push rod is fixedly connected with the inner wall of groove by the first spring, first spring gives push rod one thrust always, lateral fixed link is fixedly mounted in the inside of another piece of desktop, one end of fixed link is round end, the front and rear sides of fixed link one end open up card slot.The structure design of the utility model is reasonable, easy to remove, saves the physical strength of scientific research personnel; it can either be used alone, can also be used in combination, dust-proof and protection can be played the role of to scientific research apparatus; the angle of connecting plate can be adjusted, it is easy to use convenient for record data.

Description

A kind of Combined movable research and teaching workbench

Technical field

The utility model belongs to teaching equipment field, specifically a kind of Combined movable research and teaching work Platform.

Background technique

Generally refer to using scientific research method and equipment, in order to recognize objective things inward nature and the characteristics of motion and carry out The a series of activity such as investigation, experiment, trial-production, provide theoretical foundation for creativity and innovation new product and new technology.It is existing Scientific research research and teaching workbench, a generally entirety, scientific research apparatus placement be easy to be covered with dust all on the table, using not Just, it is not easy to move in use, and is not easy to adjust angle, when recording data, need to bow for a long time, be easy Lead to the cervical vertebra problem of scientific research personnel.

Utility model content

The utility model provides a kind of Combined movable research and teaching workbench, to solve in the prior art lack It falls into.

The utility model is achieved by the following technical programs:

Four corners of a kind of Combined movable research and teaching workbench, including two pieces of desktops, desktop bottom surface are solid Dingan County fills vertical support rod, and movable pulley is fixedly mounted in the lower end of support rod, and pushing hands is fixedly mounted in the outside of desktop, one of Strip groove is opened up on the inside of desktop, the front and rear sides inside strip groove open up groove, and the outside of groove is equipped with push rod, push rod One end is round end, and the other end of push rod is fixedly connected with the inner wall of groove by the first spring, and the first spring gives push rod one always A thrust, the inside of another piece of desktop are fixedly mounted lateral fixed link, and one end of fixed link is round end, before fixed link one end Two sides open up card slot afterwards, and one end of push rod is inserted into matching in card slot and with card slot, and the top surface of one of desktop is set There is connecting plate, the top surface articulated connection of the bottom surface of connecting plate and one of desktop, the top surface of one of desktop opens up bar shaped Through groove, bar shaped through groove are located at the rear of connecting plate, and the lower section of one of desktop is equipped with transverse slat, and the top surface of transverse slat opens up guiding Slot, guide groove is interior to be equipped with vertical guide rod, and guide rod can be moved along guide groove, and the two sides of transverse slat are solid with corresponding support rod Fixed connection, the front of transverse slat top surface are equipped with vertical bar, and the upper end of vertical bar passes through bar shaped through groove, and connection is fixedly mounted in the upper end of vertical bar The front end of bar, connecting rod is fixedly connected with connecting plate, the upper end articulated connection connecting rod of connecting rod, the lower end articulated connection spiral shell of connecting rod Set, the upper end of guide rod are fixedly connected with swivel nut, and a lead screw is passed through in swivel nut, and swivel nut is connect with lead screw by being threadedly engaged, Swivel nut can be moved along lead screw, and the rear and front end of lead screw is equipped with fixed block, and fixed block is fixedly mounted on the top surface of transverse slat, lead screw Both ends are fixedly connected with corresponding fixed block by bearing, and fixed block is located at the rear of vertical bar, and the front end of lead screw is fixedly mounted First gear, the side of first gear are equipped with second gear, and the rear of second gear is equipped with the bracket of L-type, second gear shaft It is fixedly connected with the upper end of bracket by bearing, the front of second gear is equipped with handle, the rear end of handle and second gear shaft It is fixedly connected, the lower section of one of desktop is equipped with hook, and hook is fixedly mounted on a support rod wherein, another piece of desktop Top surface be fixedly mounted open front cabinet, vertical guided way, two guided ways are fixedly mounted in the two sides of cabinet front surface Between be equipped with the slide bar of a transverse direction, it is interior and can move along guided way that the both ends of slide bar are located at corresponding guided way, in cabinet The partition of several piece transverse direction is fixedly mounted between portion two sides, the end of slide bar and guided way inside top surface lead to the fixed company of Vertical Spring It connects, Vertical Spring gives slide bar one pulling force always, and slide bar is fixedly connected with the lower section of cabinet front surface by blind, blind Rear surface be in contact with the front surface of cabinet, guide ring is fixedly mounted in the front surface of another piece of desktop, passes through one in guide ring Root drawstring, the upper end of drawstring are divided into two the end of a thread, and two the end of a thread of drawstring upper end are fixedly connected with the end of slide bar, under drawstring Pull ring is fixedly mounted in end, and pull ring is matched with hook, and riser is fixedly mounted in the top surface of connecting plate, and the front of riser is equipped with inclined plate, The rear surface of inclined plate is fixedly connected with the front surface of riser by second spring, and second spring gives inclined plate one thrust always, tiltedly The lower section of plate rear surface is in contact with the front surface of connecting plate.

A kind of Combined movable research and teaching workbench as described above, the front surface of the riser and inclined plate Rear surface opens up the sliding slot that cross section is T-type, and the sliding block of T-type is equipped in sliding slot, is equipped with baffle between two pieces of sliding blocks, baffle with Sliding block link connection.

A kind of Combined movable research and teaching workbench as described above, the lower section of the inclined plate rear surface is fixed Third spring is installed, pressing plate is fixedly mounted in one end of third spring, and pressing plate is in contact with the front surface of connecting plate, third spring Always one thrust of pressing plate is given, protective layer is fixedly mounted in the rear surface of pressing plate.

A kind of Combined movable research and teaching workbench as described above, the surface of the pushing hands are fixedly mounted anti- Sliding sleeve.

A kind of Combined movable research and teaching workbench as described above, the top surface of the partition opens up several circles Slot.

A kind of Combined movable research and teaching workbench as described above, the lower section of the fixed link are equipped with vertical Telescopic rod, the movable end of telescopic rod is articulated and connected inserted block, and the bottom surface of fixed link opens up slot, inserted block can be inserted into slot and with Slot matches, wherein the side of a support rod opens up vertical placing groove, the fixing end and placing groove inner bottom of telescopic rod Face articulated connection, telescopic rod can be placed in placing groove.

The utility model has the advantages that: the structure design of the utility model is reasonable, easy to remove, saves the body of scientific research personnel Power can either be used alone, and can also be used in combination, and can play the role of dust-proof and protection, energy to scientific research apparatus The angle of connecting plate is enough adjusted, it is easy to use convenient for record data.When carrying out research and teaching using the utility model, pass through Pushing hands pushes two pieces of desktops, is moved to fixed link in strip groove, under the action of the first spring, push rod is pushed into card slot It is interior, it will be able to block fixed link, be used in combination two pieces of desktops, pull drawstring, pull ring is hung on hook, in drawstring Under the action of by slide bar drive blind move down, so that blind is no longer blocked the open front of cabinet, it will be able in cabinet Partition on take scientific research apparatus, tested on desktop, student can stand to be watched on the periphery of desktop, is being tested During when needing to carry out data, rotational handle drives second gear to be rotated, and second gear passes through first gear drive Lead screw is rotated, and lead screw rotation band movable snail sleeve is mobile, and swivel nut drives vertical bar to swing by connective pole, and vertical bar passes through connecting rod band Dynamic connecting plate inclination, can adjust the angle of connecting plate, press inclined plate, by data record sheet be clamped in inclined plate and connecting plate it Between, it will be able to carry out record experimental data；After finishing experiment, pull ring is removed on hook, is drawn under the action of Vertical Spring Moving slide-bar drives blind to automatically reset, and blind can shelter from the open front of cabinet, can prevent from entering dust in cabinet, Pushing hands is pulled, push rod is moved in card slot, fixed link can be made to be moved in strip groove, so as to make two pieces Desktop separation, can make more students carry out viewing experimental result on the periphery of desktop.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the utility model structure diagram；Fig. 2 is the A direction view of Fig. 1, and Fig. 3 is the amplification of the B direction view of Fig. 1 Figure；Fig. 4 is the enlarged drawing of the C direction view of Fig. 1；Fig. 5 is the enlarged drawing of the line D-D cross-sectional view of Fig. 4.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

A kind of Combined movable research and teaching workbench, as shown, including two pieces of desktops 1, the four of 1 bottom surface of desktop Vertical support rod 2 is fixedly mounted in a corner, and movable pulley 3, the fixed peace in the outside of desktop 1 is fixedly mounted in the lower end of support rod 2 Pushing hands 4 is filled, the inside of one of desktop 1 opens up strip groove 5, and the front and rear sides inside strip groove 5 open up groove 6, groove 6 Outside be equipped with push rod 7, one end of push rod 7 is round end, and the other end of push rod 7 and the inner wall of groove 6 pass through the fixation of the first spring 8 Connection, the first spring 8 give 7 one thrusts of push rod always, and lateral fixed link 9 is fixedly mounted in the inside of another piece of desktop 1, fixed One end of bar 9 is round end, and the front and rear sides of 9 one end of fixed link open up card slot 10, and one end of push rod 7 is inserted into card slot 10 And matched with card slot 10, the top surface of one of desktop 1 is equipped with connecting plate 11, the bottom surface of connecting plate 11 and one of desktop 1 top surface articulated connection, the top surface of one of desktop 1 opens up bar shaped through groove 12, after bar shaped through groove 12 is located at connecting plate 11 Side, the lower section of one of desktop 1 are equipped with transverse slat 13, and the top surface of transverse slat 13 opens up guide groove 42, is equipped in guide groove 42 vertical Guide rod 43, guide rod 43 can move along guide groove 42, and the two sides of transverse slat 13 are fixedly connected with corresponding support rod 2, horizontal The front of 13 top surface of plate is equipped with vertical bar 14, and the upper end of vertical bar 14 passes through bar shaped through groove 12, and connection is fixedly mounted in the upper end of vertical bar 14 The front end of bar 15, connecting rod 15 is fixedly connected with connecting plate 11, the upper end articulated connection connecting rod 16 of connecting rod 15, under connecting rod 16 End articulated connection swivel nut 17, the upper end of guide rod 43 are fixedly connected with swivel nut 17, and a lead screw 18, swivel nut 17 are passed through in swivel nut 17 It being connect with lead screw 18 by being threadedly engaged, swivel nut 17 can be moved along lead screw 18, and the rear and front end of lead screw 18 is equipped with fixed block 19, Fixed block 19 is fixedly mounted on the top surface of transverse slat 13, and the both ends of lead screw 18 connect with corresponding fixed block 19 by the way that bearing is fixed It connects, fixed block 19 is located at the rear of vertical bar 14, and first gear 20 is fixedly mounted in the front end of lead screw 18, and the side of first gear 20 is set There is second gear 21, the rear of second gear 21 is equipped with the bracket 22 of L-type, and 21 shaft of second gear and the upper end of bracket 22 pass through Bearing is fixedly connected, and the front of second gear 21 is equipped with handle 23, and the rear end of handle 23 is fixedly connected with 21 shaft of second gear, The lower section of one of desktop 1 is equipped with hook 24, and hook 24 is fixedly mounted wherein on a support rod 2, another piece of desktop 1 The cabinet 25 of open front is fixedly mounted in top surface, and vertical guided way 26 is fixedly mounted in the two sides of 25 front surface of cabinet, and two are led To the slide bar 27 for being equipped with a transverse direction between rail 26, the both ends of slide bar 27 are located in corresponding guided way 26 and can be along guided ways 26 is mobile, the partition 28 of fixed installation several piece transverse direction between 25 inside two sides of cabinet, inside the end of slide bar 27 and guided way 26 Top surface leads to Vertical Spring 29 and is fixedly connected, and Vertical Spring 29 gives 27 1 pulling force of slide bar, slide bar 27 and 25 front surface of cabinet always Lower section be fixedly connected by blind 30, the rear surface of blind 30 is in contact with the front surface of cabinet 25, another piece of desktop 1 Front surface guide ring 31 is fixedly mounted, a drawstring 32 is passed through in guide ring 31, the upper end of drawstring 32 is divided into two the end of a thread, draws Two the end of a thread of 32 upper ends of restricting are fixedly connected with the end of slide bar 27, and the lower end of drawstring 32 is fixedly mounted pull ring 33, pull ring 33 with Hook 24 matches, and riser 34 is fixedly mounted in the top surface of connecting plate 11, and the front of riser 34 is equipped with inclined plate 35, the rear table of inclined plate 35 Face is fixedly connected with the front surface of riser 34 by second spring 36, and second spring 36 gives 35 1 thrusts of inclined plate, inclined plate always The lower section of 35 rear surfaces is in contact with the front surface of connecting plate 11.The structure design of the utility model is reasonable, easy to remove, saving section The physical strength of personnel is ground, can either be used alone, can be also used in combination, dust-proof and protection can be played to scientific research apparatus Effect, the angle of connecting plate 11 can be adjusted, convenient for record data, it is easy to use.When use the utility model carries out scientific research When teaching, two pieces of desktops 1 are pushed by pushing hands 4, are moved to fixed link 9 in strip groove 5, it, will under the action of the first spring 8 Push rod 7 is pushed into card slot 10, it will be able to and fixed link 9 is blocked, two pieces of desktops 1 are used in combination, pulls drawstring 32, it will Pull ring 33 is hung on hook 24, is moved down the drive blind 30 of slide bar 27 under the action of drawstring 32, is made blind 30 not The open front of cabinet 25 is blocked again, it will be able to which scientific research apparatus of taking on the partition 28 in cabinet 25 carries out real on desktop 1 It testing, student can stand to be watched on the periphery of desktop 1, when needing to carry out data during testing, rotational handle 23 Second gear 21 is driven to be rotated, second gear 21 drives lead screw 18 to be rotated by first gear 20, and lead screw 18 rotates Band movable snail sleeve 17 is mobile, and swivel nut 17 drives vertical bar 14 to swing by connective pole 16, and vertical bar 14 drives connecting plate by connecting rod 15 11 inclinations, can adjust the angle of connecting plate 11, press inclined plate 35, by data record sheet be clamped in inclined plate 35 and connecting plate 11 it Between, it will be able to carry out record experimental data；After finishing experiment, pull ring 33 is removed on hook 24, in the work of Vertical Spring 29 Blind 30 is driven to automatically reset with drop-down moving slide-bar 27, blind 30 can shelter from the open front of cabinet 25, can prevent Enter dust in cabinet 25, pulls pushing hands 4, be moved push rod 7 in card slot 10, can make fixed link 9 in strip groove 5 It is moved, so as to separate two pieces of desktops 1, more students can be made to carry out viewing experiment knot on the periphery of desktop 1 Fruit.

Specifically, being easy to clamp data above when clamping data record sheet, influence normally to check, this implementation The front surface of riser 34 described in example and the rear surface of inclined plate 35 open up the sliding slot 37 that cross section is T-type, are equipped with T in sliding slot 37 The sliding block 38 of type, baffle 39 is equipped between two pieces of sliding blocks 38, and baffle 39 links connection with sliding block 38.When clamping data record sheet Data above will not be sheltered from, baffle 38 can be driven to carry out by sliding block 37 by sliding block 38 mobile in sliding slot 37 It is mobile, it prevents from clamping the word on record sheet when pressing from both sides bill, avoids influencing normally to check.

Specifically, clamping force is smaller, and data record sheet is easy on connecting plate 11 when clamping data record sheet is less It falls down, influences normal use, third spring 40, third bullet is fixedly mounted in the lower section of 35 rear surface of inclined plate described in the present embodiment Pressing plate 41 is fixedly mounted in one end of spring 40, and pressing plate 41 is in contact with the front surface of connecting plate 11, and third spring 40 is always to pressure Protective layer is fixedly mounted in the rear surface of 41 1 thrusts of plate, pressing plate 41.When using the utility model, by pressing plate 41 with connect Plate 11 is in contact, and can avoid falling down on connecting plate 11 by the tighter of data record table folder, prevent from influencing normal use.

Further, it when pushing the utility model, perspires on hand, is easy to skid, the table of pushing hands 4 described in the present embodiment Anti-slip cover is fixedly mounted in face.When using the utility model, it can be prevented when pushing the utility model on hand by Anti-slip cover It skids, keeps the utility model more convenient to use.

Further, scientific research apparatus is placed in the top surface of partition 28, during mobile the utility model, be easy It is slided on partition 28, drops out, damage in cabinet 25, the top surface of partition 28 described in the present embodiment opens up several circular grooves. When use the utility model, scientific research apparatus is placed in circular groove, when moving the utility model, scientific research apparatus is can be avoided and exists It is slided on partition 28, prevents from dropping out in cabinet 25 and damage.

Further, the connection between two desktops 1 is inserted into card slot 10 by one end of push rod 7, and fastness is poor, this The lower section of fixed link 9 described in embodiment is equipped with vertical telescopic rod, the movable end articulated connection inserted block of telescopic rod, fixed link 9 Bottom surface open up slot, inserted block can be inserted into slot and match with slot, wherein the side of a support rod 2 open up it is vertical Placing groove, the fixing end and placing groove inner bottom surface of telescopic rod are articulated and connected, and telescopic rod can be placed in placing groove.Work as use When the utility model, it is inserted into slot by inserted block, the connection between two pieces of desktops 1 can be made stronger, it is made to work It is more stable in the process.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc. With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims (6)

1. a kind of Combined movable research and teaching workbench, it is characterised in that: including two pieces of desktops (1), desktop (1) bottom surface Four corners be fixedly mounted vertical support rod (2), movable pulley (3) are fixedly mounted in the lower end of support rod (2), desktop (1) Outside pushing hands (4) are fixedly mounted, open up strip groove (5) on the inside of one of desktop (1), the internal front and back of strip groove (5) Two sides open up groove (6), and the outside of groove (6) is equipped with push rod (7), and one end of push rod (7) is round end, push rod (7) it is another End is fixedly connected with the inner wall of groove (6) by the first spring (8), and the first spring (8) gives (7) thrusts of push rod always, separately Lateral fixed link (9) is fixedly mounted in the inside of one piece of desktop (1), and one end of fixed link (9) is round end, fixed link (9) one end Front and rear sides open up card slot (10), one end of push rod (7) is inserted into matching in card slot (10) and with card slot (10), In one piece of desktop (1) top surface be equipped with connecting plate (11), the bottom surface of connecting plate (11) and the top surface of one of desktop (1) are hinged Connection, the top surface of one of desktop (1) open up bar shaped through groove (12), and bar shaped through groove (12) is located at the rear of connecting plate (11), The lower section of one of desktop (1) is equipped with transverse slat (13), and the top surface of transverse slat (13) opens up guide groove (42), sets in guide groove (42) Have vertical guide rod (43), guide rod (43) can be mobile along guide groove (42), the two sides of transverse slat (13) and corresponding support Bar (2) is fixedly connected, and the front of transverse slat (13) top surface is equipped with vertical bar (14), and the upper end of vertical bar (14) passes through bar shaped through groove (12), Connecting rod (15) are fixedly mounted in the upper end of vertical bar (14), and the front end of connecting rod (15) is fixedly connected with connecting plate (11), connecting rod (15) upper end is articulated and connected connecting rod (16), and the lower end of connecting rod (16) is articulated and connected swivel nut (17), the upper end of guide rod (43) with Swivel nut (17) is fixedly connected, and a lead screw (18) is passed through in swivel nut (17), and swivel nut (17) and lead screw (18) pass through the company of being threadedly engaged It connects, swivel nut (17) can be mobile along lead screw (18), and the rear and front end of lead screw (18) is equipped with fixed block (19), and fixed block (19) is fixed It is mounted on the top surface of transverse slat (13), the both ends of lead screw (18) are fixedly connected with corresponding fixed block (19) by bearing, fixed Block (19) is located at the rear of vertical bar (14), and first gear (20) are fixedly mounted in the front end of lead screw (18), and the one of first gear (20) Side is equipped with second gear (21), and the rear of second gear (21) is equipped with the bracket (22) of L-type, second gear (21) shaft and bracket (22) upper end is fixedly connected by bearing, and the front of second gear (21) is equipped with handle (23), the rear end of handle (23) and the Two gears (21) shaft is fixedly connected, and the lower section of one of desktop (1) is equipped with hook (24), and hook (24) is fixedly mounted on it In on a support rod (2), the cabinet (25) of open front, cabinet (25) front surface is fixedly mounted in the top surface of another piece of desktop (1) Two sides be fixedly mounted vertical guided way (26), the slide bar (27) of a transverse direction is equipped between two guided ways (26), it is sliding The both ends of bar (27) are located in corresponding guided way (26) and can be mobile along guided way (26), between the internal two sides of cabinet (25) The partition (28) of several piece transverse direction is fixedly mounted, it is solid that the end of slide bar (27) and guided way (26) inside top surface lead to Vertical Spring (29) Fixed connection, Vertical Spring (29) are given (27) pulling force of slide bar always, are passed through below slide bar (27) and cabinet (25) front surface Blind (30) is fixedly connected, and the rear surface of blind (30) is in contact with the front surface of cabinet (25), another piece of desktop (1) Guide ring (31) are fixedly mounted in front surface, a drawstring (32) are passed through in guide ring (31), the upper end of drawstring (32) is divided into two Two the end of a thread of the end of a thread, drawstring (32) upper end are fixedly connected with the end of slide bar (27), and the lower end of drawstring (32), which is fixedly mounted, draws Ring (33), pull ring (33) are matched with hook (24), and riser (34) are fixedly mounted in the top surface of connecting plate (11), before riser (34) Side is equipped with inclined plate (35), and the rear surface of inclined plate (35) is fixedly connected with the front surface of riser (34) by second spring (36), the Two springs (36) give (35) thrusts of inclined plate always, and the lower section of inclined plate (35) rear surface connects with the front surface of connecting plate (11) Touching.

2. a kind of Combined movable research and teaching workbench according to claim 1, it is characterised in that: described is perpendicular The front surface of plate (34) and the rear surface of inclined plate (35) open up the sliding slot (37) that cross section is T-type, are equipped with T-type in sliding slot (37) Sliding block (38), be equipped with baffle (39) between two pieces of sliding blocks (38), baffle (39) links connection with sliding block (38).

3. a kind of Combined movable research and teaching workbench according to claim 1, it is characterised in that: described is oblique Third spring (40) are fixedly mounted in the lower section of plate (35) rear surface, and pressing plate (41) are fixedly mounted in one end of third spring (40), Pressing plate (41) is in contact with the front surface of connecting plate (11), and third spring (40) gives (41) thrusts of pressing plate, pressing plate always (41) protective layer is fixedly mounted in rear surface.

4. a kind of Combined movable research and teaching workbench according to claim 1, it is characterised in that: described pushes away Anti-slip cover is fixedly mounted in the surface of hand (4).

5. a kind of Combined movable research and teaching workbench according to claim 1, it is characterised in that: it is described every The top surface of plate (28) opens up several circular grooves.

6. a kind of Combined movable research and teaching workbench according to claim 1, it is characterised in that: described consolidates The lower section of fixed pole (9) is equipped with vertical telescopic rod, and the movable end articulated connection inserted block of telescopic rod, the bottom surface of fixed link (9) opens up Slot, inserted block can be inserted into slot and match with slot, wherein the side of a support rod (2) opens up vertical placing groove, The fixing end and placing groove inner bottom surface of telescopic rod are articulated and connected, and telescopic rod can be placed in placing groove.