CN109838203A - A kind of liftable working stand of instrument cases - Google Patents

Abstract

The present invention relates to a kind of liftable working stands of instrument cases, including the ladder ontology that can left and right opening and collapse, and the instrument cases being arranged on ladder ontology；It is characterized by: the instrument cases constrain in the top of ladder ontology and can slide up and down, lifting locking structure is equipped between the instrument cases and ladder ontology, after the height and position that instrument cases go up and down to needs, instrument cases can be locked in the height and position by the lifting locking structure.Instrument cases are for storing all kinds of tools；In addition, instrument cases constrain in the top of ladder ontology and can slide up and down, lifting locking structure is equipped between instrument cases and ladder ontology, after the height and position that instrument cases go up and down to needs, instrument cases can be locked in the height and position by lifting locking structure, and when carrying out maintenance work on working stand, instrument cases rise to proper height position at such maintenance personal station, bend over without maintenance personal or fetching tool of squatting down, make this working stand using humanized.

Description

A kind of liftable working stand of instrument cases

Technical field

The present invention relates to a kind of ladder with instrument cases more particularly to a kind of liftable working stands of instrument cases.

Background technique

Ladder is the common basis ascended a height in home life and take object or maintenance, ladder type substantially there are two types of, one is one Word ladder, this ladder include two upright bars and the crosspiece that is erected between two upright bars, they can only uprightly be used, and used When need to lean the ladder on the fixed bit of eminence to provide support to ladder, and only provide the simple function ascended a height, such as use this Kind ladder repairs, and needs repeatedly taking and placing tool up and down, benefit inconvenient for use.Another kind is double ladder, and this ladder is mostly by pushing up The hinged main ladder support in portion and support ladder composition, it can carry out operation of ascending a height in overhead positions compared with yi shaped ladder, but Most double ladder does not have the function of storing tools yet, also needs repeatedly taking and placing tool up and down.

For convenience of place tool, without upper and lower ladder can taking and placing tool, someone invented the ladder with instrument cases, such as specially Benefit number is the Chinese invention patent " multi-functional herring ladder " and a patent No. of ZL02229633.6 (notification number CN2547857Y) For the Chinese invention patent " safety ladder with tool box " of ZL201220656783.5 (notification number CN202937172U), it Disclose a kind of instrument cases being fixed at the top of ladder to storing tools.But aforementioned tools box is opposite with ladder solid Fixed, instrument cases cannot change with respect to the upper-lower height of ladder, since staff itself has certain altitude, when people stands in ladder Top, hand the Distance tool box have certain height, and staff is also needed to bend over or squat down taking and placing tool, and so general ladder top supplies It is narrow that people tramples plane, bends over or squats down inconvenient for operation and dangerous.Although the length of its terraced main ladder support of somebody's word is higher than Ladder is supported, instrument cases is made to have certain altitude apart from the top standing platform, in this way from instrument cases taking and placing tool relatively convenient, but Since main ladder support is higher, it is larger that this ladder folds rear volume, it has not been convenient to and ladder is placed, then has the difference of staff's height, Also different with respect to the requirement for height of ladder erect position to most suitable instrument cases, the instrument cases of fixed height position cannot be adapted to most All staff on board.

Summary of the invention

The technical problem to be solved by the present invention is to provided for above-mentioned state of the art it is a kind of have facilitate placement The structure design of the instrument cases while a kind of liftable working stand of instrument cases of carry-on tool, the working stand is more reasonable, and Using more convenient and humanized.

The technical scheme of the invention to solve the technical problem is: a kind of liftable working stand of instrument cases, packet Include the ladder ontology that can be opened and collapse, and the instrument cases being arranged on ladder ontology；It is characterized by: the instrument cases constraint Ladder ontology top and can slide up and down, between the instrument cases and ladder ontology be equipped with lifting locking structure, in tool Box is gone up and down to the height and position of needs, and instrument cases can be locked in the height and position by the lifting locking structure.

The left and right sides of above-mentioned instrument cases is equipped with the guide rod for extending downwardly setting, and guide rod is inserted into the ladder ontology Two ladder bars in and can slide up and down, the lifting locking structure setting is between guide rod and the ladder bars.Guide rod pair Guiding role is played in the sliding up and down of instrument cases, while guide rod also provides suitable installation position to the installation of lifting locking structure.

Above-mentioned lifting locking structure includes locking rack gear, is fixed in ladder bars and is arranged along ladder bars length direction；First connects Bar is threaded through in guide rod, and the upper end of first connecting rod is connect with a button, and can the sliding up and down under the driving of button；Connection Box is fixed on the lower end of guide rod, and there is constraint in connection box opposite can connect the closing piece slid before and after box, connects the front side wall of box On be provided with opening, the end face that closing piece exposes opening is equipped with the positioning teeth portion to match with the locking rack gear, connects and is equipped in box It acts on closing piece and closing piece is made to keep the first spring for exposing the opening trend；Drive block is fixed on the first connecting rod Lower end, the drive block are constrained in connection box and can be slid up and down, and the drive block and closing piece cooperate, so that drive block moves down Closing piece can be pushed to move back；In the case where closing piece moves forward and exposes open state, the positioning teeth portion is engaged with rack gear is locked with by guide rod Locking opposite with ladder bars；After closing piece under shifting state, the positioning teeth portion and locking rack gear be disengaged from release guide rod with Ladder bars are opposite to be locked.

Aforementioned lifting locking structure is matched by rack gear and the card of teeth portion to be realized, so that lifting locking structure can realize stepless lock It is fixed, it can be by any position of instrument cases within a certain height.

Above-mentioned closing piece has upward sweptback first inclined-plane, and the rear end face of the drive block is to cooperate with the first inclined-plane The second inclined-plane.By the inclined-plane cooperation between drive block and closing piece, moving down for drive block is made smoothly closing piece to be driven to move back.

Above-mentioned lifting locking structure includes multiple along the spaced location hole of ladder bars length direction；Second connecting rod is worn In guide rod, the upper end of second connecting rod is connect with button, and can the sliding up and down under the driving of button；Mounting box is fixed on On guide rod, the bottom of mounting box is equipped with can constrain in the front and back sliding of mounting box energy with the locking bar of the location hole inserting, locking bar, It is equipped in mounting box and acts on locking bar and locking bar is made to keep the third spring for exposing the front side wall trend of the mounting box；Transmission knot Structure is set between second connecting rod and locking bar, by second connecting rod to move down the elastic force that locking bar can be driven to overcome third spring interior Contracting；In the state that locking bar is overhanging and is inserted into positioning hole, realizes the opposite locking of guide rod and ladder bars, contract in locking bar de- In the state of location hole, the opposite locking of guide rod and ladder bars is released.

The aforementioned another structure type for lifting locking structure, the structure have the advantages that structure is simple, at low cost.

Above-mentioned drive mechanism includes shift fork, and the rear end thereof of the shift fork is connected in mounting box, the struck side of shift fork and lock The outer end face contact of bar, in the state that shift fork deflects down, the struck side of shift fork pushes locking bar to inside contract, the second connecting rod The upper end face contact of lower end and shift fork can drive shift fork to deflect down so that second connecting rod moves down.Pass through moving down for second connecting rod Deflecting down for shift fork is driven, and then drives moving back for locking bar, realizes the releasing of locking.

There are in above-mentioned mounting box upper chamber and lower chambers, the shift fork is rotatably installed in upper chamber, the locking bar and Third spring is arranged in bottom chamber.

Above-mentioned mounting box is fixed on the middle part in guide rod, and the rear end face of ladder bars is not arranged in there are two point for location hole.Such as Location hole is arranged in the front end face of ladder bars, so in the locked state, locking bar can expose outside the front end face of ladder, and this structure Location hole is arranged in the rear end face of ladder bars, so in the locked state, locking bar will not expose outside the front end face of ladder.

The left and right sides of above-mentioned instrument cases is equipped with button box, and the button is arranged in button box and manifests on button box End face, the guide rod upper end are inserted and secured in button box, and being additionally provided in the button box makes button holding move up trend Second spring.Button box provides installation position to button.

It is linked together between two button boxes by connecting shaft, connection sheet is fixed at left and right sides of instrument cases, The connection sheet is set in connecting shaft and is able to rotate, the raised baffle of the medial surface of the instrument cases, overturns in instrument cases To horizontality, the connection sheet is shelved on baffle.The structure enables instrument cases to overturn with respect to ladder ontology, in ladder In the state that ontology collapses, instrument cases can also be collapsed, and reduce the volume of ladder rounding state, be convenient for packaging and storing.

Compared with the prior art, the advantages of the present invention are as follows: the instrument cases being arranged on ladder ontology, instrument cases are for storing All kinds of tools；In addition, instrument cases constrain in the top of ladder ontology and can slide up and down, it is equipped between instrument cases and ladder ontology Lifting locking structure, after the height and position that instrument cases go up and down to needs, instrument cases can be locked in the height by lifting locking structure Position is spent, when carrying out maintenance work on working stand, instrument cases rise to proper height position, without maintenance at such maintenance personal station Personnel bend over or squat down fetching tool, make this working stand using humanized.

Detailed description of the invention

Fig. 1 is the schematic perspective view (instrument cases decline state) of the embodiment of the present invention；

Fig. 2 is the schematic perspective view (instrument cases propradation) of the embodiment of the present invention；

Fig. 3 is the structure sectional view of the first lifting locking structure in the embodiment of the present invention；

Fig. 4 is the stereogram exploded view of the first lifting locking structure in the embodiment of the present invention；

Fig. 5 is the structure sectional view of button part in the embodiment of the present invention；

Fig. 6 is stereogram exploded view of the instrument cases in conjunction with ladder ontology in the embodiment of the present invention；

Fig. 7 is the structure sectional view of second of lifting locking structure in the embodiment of the present invention；

Fig. 8 is the stereogram exploded view of second of lifting locking structure in the embodiment of the present invention；

Fig. 9 is the schematic perspective view that the ladder bars of second of lifting locking structure are equipped in the embodiment of the present invention.

Specific embodiment

The present invention will be described in further detail below with reference to the embodiments of the drawings.

It as shown in figure 1-9, is the preferred embodiment of the present invention.

A kind of liftable working stand of instrument cases including the ladder ontology 1 that can front and back opening and collapse, and is arranged in ladder Instrument cases 2 on ontology 1 have the cavity to place tool on instrument cases 2；Ladder ontology 1 includes main ladder support, support ladder And it is connected to the connector between main ladder support and supporting ladder top of the trellis, main ladder support includes two or so spaced main ladder bars, even Fitting is fixed on the top of main ladder bars, and support ladder includes two or so spaced support ladder bars, and the top of ladder bars is supported to turn Pedal assembly that is dynamic to be connected on connector, being provided with and can be folded between main ladder support, support ladder, pedal assembly includes upper Under spaced at least two pieces of pedals.Existing working stand can be used in specific ladder body construction.

Instrument cases 2 constrain in the top of ladder ontology 1 and can slide up and down, are equipped with and rise between instrument cases 2 and ladder ontology 1 Locking structure drops, and after the lifting to the height and position needed of instrument cases 2, instrument cases 2 can be locked in by the lifting locking structure The height and position.The left and right sides of instrument cases 1 is equipped with the guide rod 3 for extending downwardly setting, which is inserted into ladder ontology 1 In two ladder bars 11 in and can slide up and down, lifting locking structure setting is between guide rod 3 and the ladder bars 11.

Two kinds of structures can be used in lifting locking structure in the present embodiment,

The first lifting locking structure include: as figures 2-6,

Rack gear 4 is locked, be fixed in the ladder bars 11 and is arranged along 11 length direction of ladder bars.

First connecting rod 5 is threaded through in guide rod 3, and the upper end of first connecting rod 5 is connect with button 6, and can be in the drive of button 6 Dynamic lower sliding up and down.

As shown in Figure 5,6, the left and right sides of instrument cases 2 is equipped with button box 12, passes through connecting shaft between two button boxes 12 13 link together, and the left and right sides of instrument cases 2 is fixed with connection sheet 14, and connection sheet 14 is set in connecting shaft 13 and can turn Dynamic, the raised baffle 21 of the medial surface of instrument cases 2, in the case where instrument cases are overturn to horizontality, connection sheet 21 is shelved on gear On piece 14.Button 6 is arranged in button box 12 and manifests button box upper surface, and 3 upper end of guide rod is inserted and secured on button In box 12, the second spring 9b for making button 6 keep moving up trend is additionally provided in button box 12.

Box 7 is connected, is fixed by screws in the lower end in guide rod 3, have can be before opposite connection box 7 for constraint in connection box 7 The closing piece 8 slid afterwards connects and is provided with opening 71 on the front side wall of box 7, and the end face that closing piece 8 exposes opening is equipped with and locking rack gear The 4 positioning teeth portion 81 to match, interior be equipped with of connection box 7 act on closing piece 8 and closing piece 8 are made to keep exposing the first of the opening trend Spring 9a.

Drive block 10 is fixed on the lower end of first connecting rod 5, which constrains in connection box 7 and can slide up and down, Drive block 10 and closing piece 8 cooperate, so that moving down for drive block 10 can push closing piece 8 to move back.Closing piece 8 has sweptback upwards First inclined-plane 82, the rear end face of drive block 10 are the second inclined-plane 101 cooperated with the first inclined-plane 82.

In the case where closing piece 8 moves forward and exposes 71 states of opening, positioning teeth portion 81 engage with locking rack gear 4 with by guide rod 3 with it is terraced Bar 11 is opposite to be locked；After closing piece 8 under shifting state, positioning teeth portion 81 and locking rack gear 4 are disengaged to release guide rod 3 and ladder Bar 11 is opposite to be locked.

This working stand is as follows using the lifting process of instrument cases in the first lifting locking structure:

Button 6 is pressed down on first, and button 6 overcomes the elastic force of second spring 9b to move down, and drives first connecting rod 5, driving Block 10 moves down, under the inclined-plane mating reaction on the first inclined-plane 82 and the second inclined-plane 101 of drive block 10 of closing piece 8, drive block 10 Closing piece 8 is driven to overcome the resilient rear-moving of the first spring 9a, the positioning teeth portion 81 and locking rack gear 4 on closing piece are disengaged to release Guide rod 3 and the opposite locking of ladder bars 11.

Then lifting or pushing instrument cases 2, guide rod 3, first connecting rod 5, drive block 10, connection box 7, closing piece 8 together with Instrument cases 2 are moved up or are moved down, after moving up or being displaced downwardly to proper height, release button 6, and elastic force of the button 6 in second spring 9b It is moved up under effect, and first connecting rod 5, drive block 10 is driven to move up, until drive block 10 is upwardly separated from the cavity 82 of closing piece 8, lock Block 8 the first spring 9a elastic force effect under move forward, until closing piece 8 Forward expose connection box 7 opening 71, positioning teeth portion 81 with The engagement of rack gear 4 is locked to lock guide rod 3 and ladder bars 11 relatively.

As shown in figs. 7-9, second of lifting locking structure includes

It is multiple there are two location holes 111, to divide along the spaced location hole 111 of 11 length direction of ladder bars, the present embodiment The rear end face of ladder bars 11 is not set.

Second connecting rod 15 is threaded through in guide rod 3, and the upper end of second connecting rod 15 is connect with button 6, and can be in button 6 The lower sliding up and down of driving.

Mounting box 16 is fixed on the middle part in guide rod 3, and the bottom of mounting box 16 is equipped with can be with 111 inserting of location hole Locking bar 17, locking bar 17 constrain in 16 energy front and back sliding of mounting box, are equipped in mounting box 16 and act on locking bar 17 and make the guarantor of locking bar 17 Hold the third spring 9c for exposing the front side wall trend of the mounting box 16；

Drive mechanism is set between second connecting rod 15 and locking bar 17, can drive locking bar 17 by moving down for second connecting rod 15 Overcome the elastic force of third spring 9c and inside contracts.Drive mechanism includes substantially L-shaped shift fork 18, and the rear end thereof of the shift fork 18 connects It connects in mounting box 16, the front end of shift fork 18 has the struck side 181 for extending downwardly setting, and struck side 181 is outer with locking bar 17 End face contact, in the state that shift fork 18 deflects down, the struck side 181 of shift fork 18 pushes locking bar 17 to inside contract, second connecting rod 15 Lower end and shift fork 18 upper end face contact shift fork 18 can be driven to deflect down so that second connecting rod 15 moves down.In mounting box 16 With upper chamber 161 and lower chambers 162, shift fork 18 is rotatably installed in upper chamber 161, and locking bar 17 and third spring 9c setting exist In lower chambers 162.

It is overhanging in locking bar 17 and in the state of be inserted into location hole 111, realize the opposite locking of guide rod 3 and ladder bars 11, It is contractd in the state of be detached from location hole 111 in locking bar 17, releases the opposite locking of guide rod 3 and ladder bars 11.

The lifting process of instrument cases is as follows in second of lifting locking structure of this working stand:

Button 6 is pressed down on first, button 6 overcomes the elastic force of second spring 9b to move down, and drives second connecting rod 15, and second Connecting rod 15, which moves down, can drive shift fork 18 to deflect down, while the struck side 181 of shift fork 18 pushes locking bar 17 to overcome third spring 9c It inside contracts, locking bar 17 is detached from location hole 111, releases the opposite locking of guide rod 3 and ladder bars 11

Then lifting or pushing instrument cases 2, guide rod 3, second connecting rod 15, mounting box 16, shift fork 18, locking bar 17 together with Instrument cases 2 are moved up or are moved down, after moving up or being displaced downwardly to proper height, release button 6, and elastic force of the button 6 in second spring 9b It is moved up under effect, and second connecting rod 15 is driven to move up, locking bar 17 moves forward under the elastic force effect of third spring 9c, and locking bar 17 is overhanging And be inserted into location hole 111, realize the opposite locking of guide rod 3 and ladder bars 11.

Although the preferred embodiment of the present invention has been described in detail above, it is to be clearly understood that for this field Technical staff for, the invention may be variously modified and varied.Done within the spirit and principles of the present invention What modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of liftable working stand of instrument cases including the ladder ontology (1) that can be opened and collapse, and is arranged in ladder ontology (1) instrument cases (2) on；It is characterized by: the instrument cases (2) constrain in the top of ladder ontology (1) and can slide up and down, Lifting locking structure is equipped between the instrument cases (2) and ladder ontology (1), in instrument cases (2) lifting to the height position needed It postpones, instrument cases (2) can be locked in the height and position by the lifting locking structure.

2. the liftable working stand of a kind of instrument cases according to claim 1, it is characterised in that: the instrument cases (1) The left and right sides is equipped with the guide rod (3) for extending downwardly setting, which is inserted into two ladders in the ladder ontology (1) It can slide in bar (11) and up and down, the lifting locking structure setting is between guide rod (3) and the ladder bars (11).

3. the liftable working stand of a kind of instrument cases according to claim 2, it is characterised in that: the lifting locking structure Including

It locks rack gear (4), be fixed in the ladder bars (11) and be arranged along ladder bars (11) length direction；

First connecting rod (5) is threaded through in the guide rod (3), and the upper end of first connecting rod (5) is connect with a button (6), and can be Sliding up and down under the driving of button (6)；

It connects box (7), is fixed on the lower end of guide rod (3), the interior constraint of connection box (7) has and can slide before and after opposite connection box (7) Closing piece (8), connect box (7) front side wall on be provided with opening (71), closing piece (8) expose opening end face equipped with and the lock The positioning teeth portion (81) that fixed rack (4) matches, interior be equipped with of connection box (7) act on closing piece (8) and closing piece (8) are made to keep exposing institute State the first spring (9a) of opening trend；

Drive block (10), is fixed on the lower end of the first connecting rod (5), which constrains in connection box (7) and energy Sliding up and down, the drive block (10) and closing piece (8) cooperate, so that moving down for drive block (10) can push closing piece (8) to move back；

In the case where closing piece (8) move forward and expose opening (71) state, the positioning teeth portion (81) is engaged with locking rack gear (4) will be oriented to Bar (3) and ladder bars (11) opposite locking；Under closing piece (8) afterwards shifting state, the positioning teeth portion (81) and locking rack gear (4) are detached from To release, guide rod (3) and ladder bars (11) are opposite to be locked for engagement.

4. the liftable working stand of a kind of instrument cases according to claim 3, it is characterised in that: the closing piece (8) it is upper Portion has upward sweptback first inclined-plane (82), and the rear end face of the drive block (10) is to cooperate with the first inclined-plane (82) Second inclined-plane (101).

5. the liftable working stand of a kind of instrument cases according to claim 2, it is characterised in that: the lifting locking structure Including

It is multiple along the spaced location hole of ladder bars (11) length direction (111)；

Second connecting rod (15) is threaded through in guide rod (3), and the upper end of second connecting rod (15) is connect with button (6), and can be in button (6) sliding up and down under driving；

Mounting box (16) is fixed on guide rod (3), and the bottom of mounting box (16) is equipped with can be with the location hole (111) inserting Locking bar (17), locking bar (17) constrain in mounting box (16) can front and back sliding, be equipped in mounting box (16) and act on locking bar (17) And locking bar (17) is made to keep the third spring (9c) for exposing the front side wall trend of the mounting box (16)；

Drive mechanism is set between second connecting rod (15) and locking bar (17), can drive locking bar by moving down for second connecting rod (15) (17) overcome the elastic force of third spring (9c) and inside contract；

It is overhanging in locking bar (17) and be inserted into location hole (111) it is interior in the state of, realize the opposite lock of guide rod (3) and ladder bars (11) It is fixed, it is contractd in the state of be detached from location hole (111) in locking bar (17), releases the opposite locking of guide rod (3) and ladder bars (11).

6. the liftable working stand of a kind of instrument cases according to claim 5, it is characterised in that: the drive mechanism includes Shift fork (18), the rear end thereof of the shift fork (18) are connected in mounting box (16), the struck side (181) of shift fork (18) and locking bar (17) outer end face contact, in the state that shift fork (18) deflects down, the struck side (181) of shift fork (18) pushes locking bar (17) It inside contracts, the lower end of the second connecting rod (15) and the upper end face contact of shift fork (18), so that second connecting rod (15), which moves down, to be driven Shift fork (18) deflects down.

7. the liftable working stand of a kind of instrument cases according to claim 6, it is characterised in that: in the mounting box (16) With upper chamber (161) and lower chambers (162), the shift fork (18) is rotatably installed in upper chamber (161), the locking bar (17) And third spring (9c) setting is in lower chambers (162).

8. the liftable working stand of a kind of instrument cases according to claim 5, it is characterised in that: the mounting box (16) is solid It is scheduled on the middle part in guide rod (3), there are two the location holes (111), is separately positioned on the rear end face of ladder bars (11).

9. a kind of liftable working stand of instrument cases according to claim 3 or 5, it is characterised in that: the instrument cases (2) The left and right sides be equipped with button box (12), the button (6) setting is in button box (12) and manifests button box (12) upper end Face, guide rod (3) upper end are inserted and secured in button box (12), and being additionally provided in the button box (12) makes button (6) Keep moving up the second spring (9b) of trend.

10. the liftable working stand of a kind of instrument cases according to claim 9, it is characterised in that: two button boxes (12) it is linked together between by connecting shaft (13), is fixed with connection sheet (14), the company at left and right sides of the instrument cases (2) Contact pin (14) is set on connecting shaft (13) and is able to rotate, the raised baffle of medial surface (21) of the instrument cases (2), Under instrument cases (2) overturning to horizontality, the connection sheet (21) is shelved on baffle (14).