CN210882199U

CN210882199U - Tank pushing vehicle

Info

Publication number: CN210882199U
Application number: CN201921842556.XU
Authority: CN
Inventors: 王永富; 钱建庆; 王廉远
Original assignee: Shanghai Cool Refrigeration Equipment Co ltd
Current assignee: Shanghai Cool Refrigeration Equipment Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-30
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to the technical field of trolleys, and discloses a tank pushing truck, which comprises a truck frame and rollers, wherein the truck frame comprises a base, a pushing arm, a connecting rod and a carrying plate; the push arm is obliquely arranged from bottom to top in the direction close to the connecting rod; one end of the connecting rod, which is far away from the base, is connected with the push arm; the lower end of the push arm extends to the lower part of the base, and a mounting frame is fixed at the lower end of the push arm; the roller is arranged on the mounting frame; a mounting plate is arranged on one side of the lower end surface of the base, which is far away from the object carrying plate; the lower end surface of the mounting plate is provided with a universal wheel; a supporting part is arranged between the two pushing arms; a protection part is covered above the supporting part; the protection part comprises a first fixing rod, a second fixing rod which is parallel to the first fixing rod and is arranged at an interval with the first fixing rod, and an arc-shaped plate which is used for connecting the first fixing rod and the second fixing rod; the first fixed rod is hinged on a push arm; the second fixed rod is fixed on the other pushing arm through a locking fastener. The utility model has the advantages of it is following and effect: it is stable in transportation and high in safety in use.

Description

Tank pushing vehicle

Technical Field

The utility model relates to a handcart technical field, in particular to push away tank car.

Background

When transporting the medium and small-sized refrigerant filling tank, the tank pushing vehicle is usually used for carrying to replace manual carrying, so that the labor cost of personnel is reduced, the transportation speed is accelerated, and the working efficiency is improved. The frame of a common cart is of an L-shaped structure, so that the cart needs to be turned over and transversely placed when goods are loaded and unloaded.

At present, a Chinese utility model with the publication number of CN209395827U discloses a simple oil drum trolley, which comprises a trolley body, a fork plate, a clamp and a clamping plate, wherein the trolley body is provided with two travelling wheels and a trolley frame, the trolley frame is provided with a bottom frame, a back plate and a push handle, the push handle is formed by upwards extending and bending vertical rods at two sides of the back plate, and the clamp is fixedly arranged at the middle part of the back plate; the splint setting is in the backplate top, fixes on pushing away the handle through the sleeve, and splint still include front end clamp plate and chuck, and the clamp plate is L platelike, and L erects limit and muffjoint, and the oil drum upper cover is arranged in to the L horizontal limit, and the chuck is crooked elasticity steel sheet, and vertical L that articulates at the clamp plate erects the limit rear side, and articulated department is equipped with torque spring, and the upper end is for pressing the splenium, and the lower extreme is the clamping part.

Above-mentioned technical scheme whole device small in size, simple structure, it is nimble in narrow and small regional internal rotation, nevertheless have following defect: in the transportation process, the bottle body is unstable to place and prone to topple when encountering the condition of bumpy road surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a push away tank car, its transportation is steady, and the safety in utilization is high to the not enough of prior art existence.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a tank pushing truck comprises a truck frame and a roller arranged below the truck frame, wherein the truck frame comprises a base, two parallel pushing arms arranged on the base, a connecting rod arranged on the base and a carrying plate arranged at the lower end of each pushing arm; the push arm is obliquely arranged from bottom to top in the direction close to the connecting rod; one end of the connecting rod, which is far away from the base, is connected with the push arm; the lower end of the push arm extends to the lower part of the base, and a mounting frame is fixed at the lower end of the push arm; the idler wheels are arranged on the mounting frame; a mounting plate is arranged on one side of the lower end face of the base, which is far away from the carrying plate; the lower end face of the mounting plate is provided with a universal wheel; a supporting part is arranged between the two pushing arms; a protection part is covered above the supporting part; the protection part comprises a first fixing rod, a second fixing rod parallel to the first fixing rod and arranged at an interval with the first fixing rod, and an arc-shaped plate for connecting the first fixing rod and the second fixing rod; the arc-shaped plates are arranged at intervals along the length direction of the fixing rod, and the middle parts of the arc-shaped plates are protruded towards the direction departing from the supporting parts; the first fixed rod is hinged to a push arm; the second fixing rod is fixed on the other pushing arm through a locking fastener.

Through adopting above-mentioned technical scheme, when the refrigerant jar body needs to be transported, at first stand the shallow, make the lower terminal surface and the ground butt that carry the thing board, be convenient for carry the jar body to carry and carry the thing board, place the jar body on carrying the thing board after, be fixed in between protection piece and the supporting part with the jar body through the protection piece, thereby turn the shallow, make carry the thing board break away from the butt with ground, make gyro wheel and universal wheel and ground butt, thereby there is a stable support to the jar body, not only be favorable to loading and unloading jar body, and the transportation is stable, the jar body is difficult for taking place to empty, and the security is high.

Set up the supporting part, be favorable to improving the support bearing to the jar body for the jar body is placed more stably, uses with the protection part cooperation, makes jar body installation firm on the shallow, and the phenomenon is emptyd to difficult emergence. Set up the arc for the arc can with the laminating of jar external surface, thereby can increase the area of contact of arc and the jar body, more stable to the installation of the jar body, through with protection piece one side with push arm articulated, the protection piece opposite side with push arm lock, make the installation of the jar body convenient and fast more, and simple structure, the practicality is strong, jar body is fixed, difficult emergence is rocked and is collided. The connecting rod further improves the support when transporting the jar body for it is more stable when the jar body transports.

The utility model is further arranged in that the lock catch piece comprises an installation block arranged at one side of the second fixed rod, which is deviated from the first fixed rod, a chute which is arranged on the installation block and is positioned at one side of the installation block, which is perpendicular to the second fixed rod, a slide block which is arranged in the chute in a sliding way, and a spring which is used for connecting the slide block and the chute; one side of the mounting block, which is far away from the second fixed rod, is provided with a movable groove communicated with the sliding groove; a movable rod is movably arranged in the movable groove; one end of the movable rod is fixedly connected with the sliding block, and the other end of the movable rod extends out of the movable groove; one end of the movable rod, which is far away from the sliding block, is provided with a movable block; the end face of the sliding block, which is far away from the sliding chute, is an inclined face which is obliquely arranged from bottom to top in the direction far away from the mounting block; a fixed block is arranged on the push arm; the fixed block is provided with a mounting groove matched with the mounting block; a clamping groove communicated with the mounting groove is formed in the position, located on one side of the mounting groove, of the fixing block; the slider is matched with the clamping groove.

Through adopting above-mentioned technical scheme, jar body is placed on carrying the thing board after, closes the arc lid on the surface of jar body, and in the slider was extruded the spout, when the installation piece inlays in the mounting groove, the draw-in groove was aimed at to the slider, because the setting of spring, the slider popped out and the slider stretches into the draw-in groove and blocks. When the jar body need be dismantled, through the portable movable block, with the direction removal of movable block to keeping away from the draw-in groove, make the movable rod drive the slider and remove to the direction that deviates from the draw-in groove, thereby make the slider break away from the joint with the draw-in groove, with the arc to being close to first dead lever and push away the upset of arm articulated one side, thereby can demolish the jar body. The operation is simple, convenient and flexible, and the practicability is strong.

The utility model is further arranged that both ends of the arc-shaped plate are provided with fixed sleeves; and a fixing piece for locking the fixing sleeve is arranged on one side of the fixing sleeve.

Through adopting above-mentioned technical scheme, set up fixed cover to be fixed in on first dead lever and the second dead lever two fixed covers through the mounting. When the longer great jar of body of volume of needs transportation, can be through loosening the mounting, fix the fixed cover adjustment to suitable position, be convenient for fix the jar body better for jar body is difficult not hard up, and the installation is stable.

The utility model is further provided that the fixing part comprises a threaded rod which is connected with one side of the fixing sleeve by screw thread and a fixture block which is rotationally connected with one end of the threaded rod and is positioned in the fixing sleeve; the threaded rod penetrates through the fixed sleeve and extends towards the direction back to the arc-shaped plate; the other end of the threaded rod is fixedly connected with the torsion block; and one side of the clamping block, which is far away from the threaded rod, is attached to the outer surface of the push arm.

Through adopting above-mentioned technical scheme, the piece is turned round in the hand, turns round the piece through the knob for the fixture block supports tightly to first dead lever and second dead lever, makes the interval between fixture block and the fixed cover diminish, thereby can be fixed in on first dead lever and the second dead lever with the arc. Simple structure and convenient fixation.

The utility model is further arranged in such a way that the carrying plate is vertical to the bottom end of the push arm and extends towards the direction below the push arm; a baffle is arranged at one side close to the lower part of the push arm; the middle part of the baffle protrudes towards the lower part of the push arm to form an arc shape.

Through adopting above-mentioned technical scheme, set up the baffle, when the shallow turned, the baffle can play the better supporting effect to the jar body, can also carry on spacingly to the jar body for loading and unloading to the jar body is more stable, sets the baffle to the arc form, makes the baffle can with the surface laminating of the jar body, and holistic bearing effect is better.

The utility model is further provided with a support piece arranged between the base and the push arm; the supporting piece comprises a first supporting rod and a second supporting rod, wherein one end of the first supporting rod is fixed on the base, the other end of the first supporting rod is fixed on the lower surface of the push arm, one end of the second supporting rod is fixed on the base, and the other end of the second supporting rod is fixed on the lower surface of the other push arm; the middle parts of the first supporting rod and the second supporting rod are arranged in a crossed mode.

Through adopting above-mentioned technical scheme, set up support piece, through criss-cross first bracing piece and second bracing piece, improve the support to pushing away the arm for when the jar body is overweight, perhaps when turning the shallow state from standing up to the state that carries the thing board and break away from ground, support piece can support the buffering to pushing away the arm, when making the jar body place the state that can transport of slope, has steady effect, further improves the supporting effect to the jar body, makes jar body transportation steady.

The utility model is further arranged that the supporting part is an arc-shaped supporting plate which is protruded from bottom to top in the direction deviating from the protection part; the supporting plates are arranged in a plurality at intervals along the length direction of the push arm.

Through adopting above-mentioned technical scheme, set the backup pad into with the arc form of the lower surface looks adaptation of the jar body for support to the jar body is reliable and more stable, makes jar body difficult production in the transportation rock and collide.

The utility model is further arranged that one end of the push arm departing from the loading plate is formed with a bent handrail rod; the handrail rod is sleeved with a rubber sleeve.

By adopting the technical scheme, the rubber sleeve is arranged, so that the antiskid performance is favorably improved when the cart is pushed to transport, and in addition, when the vertical cart is turned downwards, the friction between a hand and a handrail rod is increased, and the safety when the cart is turned over is improved.

To sum up, the utility model discloses a beneficial technological effect does:

the supporting part is arranged, so that the supporting and bearing of the tank body can be improved, the tank body can be placed more stably, and the supporting part is matched with the protection part for use, so that the tank body is stably installed on the cart and is not easy to topple over;

set up the arc for the arc can with the laminating of jar external surface, thereby can increase the area of contact of arc and the jar body, more stable to the installation of the jar body, through with protection piece one side with push arm articulated, the protection piece opposite side with push arm lock, make the installation of the jar body convenient and fast more, and simple structure, the practicality is strong, jar body is fixed, difficult emergence is rocked and is collided. The connecting rod further improves the support of the tank body during transportation, so that the tank body is more stable during transportation;

set up the baffle, when the shallow turned, the baffle can play the better supporting effect to the jar body, can also carry on spacingly to the jar body for loading and unloading to the jar body is more stable, sets the baffle to the arc form, makes the baffle can laminate with the surface of the jar body, and holistic supporting effect is better.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic view of a guard structure of an embodiment;

fig. 3 is a schematic view of the construction of the catch member of the embodiment;

fig. 4 is a schematic structural view of a fixing member of the embodiment.

Reference numerals: 1. a frame; 11. a base; 12. a push arm; 121. a limiting groove; 13. a connecting rod; 14. a loading plate; 141. a baffle plate; 142. an anti-slip groove; 15. a grab rail; 151. a rubber sleeve; 16. a mounting frame; 17. mounting a plate; 171. a universal wheel; 18. a roller; 2. a support portion; 21. a support plate; 3. a guard; 31. a first fixing lever; 32. a second fixing bar; 33. an arc-shaped plate; 331. fixing a sleeve; 332. fixing grooves; 4. a fastener; 41. mounting blocks; 42. a chute; 43. a slider; 44. a spring; 45. a movable groove; 46. a movable rod; 461. a movable block; 47. a fixed block; 48. mounting grooves; 49. a card slot; 5. a fixing member; 51. a threaded rod; 52. a clamping block; 53. twisting the block; 6. a support member; 61. a first support bar; 62. a second support bar; 7. and (5) a tank body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the push tank truck comprises a truck frame 1 and rollers 18.

The frame 1 comprises a base 11, two parallel push arms 12 welded on the base 11, a connecting rod 13 welded on the base 11, and a carrying plate 14 welded at the lower end of the push arms 12. The push arm 12 is welded on one side of the base 11, the push arm 12 is obliquely arranged from bottom to top in a direction close to the connecting rod 13, a bent grab bar 15 is formed at one end, away from the loading plate 14, of the push arm 12, a rubber sleeve 151 is sleeved on the grab bar 15, and anti-skid lines are arranged on the rubber sleeve 151. The connecting rod 13 is welded on one side of the base 11 departing from the pushing arm 12, and one end of the connecting rod 13 departing from the base 11 is fixedly connected with the connecting rod 13.

Referring to fig. 2, the loading plate 14 is perpendicular to the bottom end of the pushing arm 12 and extends toward the direction below the pushing arm 12, a baffle 141 is welded to one side of the loading plate 14 close to the lower side of the pushing arm 12, and the middle of the baffle 141 protrudes toward the lower side of the pushing arm 12 to form an arc shape. The upper end surface of the loading plate 14 is provided with a plurality of anti-slip grooves 142 arranged at intervals. The lower end of the push arm 12 extends to the lower part of the base 11, a mounting frame 16 is fixed at the lower end of the push arm 12, and a roller 18 is mounted on the mounting frame 16. The mounting plate 17 is welded to the lower end face of the base 11 and the side, away from the object carrying plate 14, of the mounting plate 17, the universal wheel 171 is mounted on the lower end face of the mounting plate 17, the lower surfaces of the rollers 18 and the universal wheel 171 are located on the same horizontal plane, and the universal wheel 171 is located in the middle of the base 11 in the width direction.

A support part 2 is installed between the two pushing arms 12, the support part 2 is an arc-shaped support plate 21 with the middle part protruding in the direction away from the protection part 3, and two support plates 21 are arranged at intervals along the length direction of the pushing arms 12.

A guard 3 is covered above the support 2. The protector 3 includes a first fixing lever 31, a second fixing lever 32 parallel to the first fixing lever 31 and spaced apart from the first fixing lever 31, and an arc plate 33 connecting the first fixing lever 31 and the second fixing lever 32. The arc plate 33 is provided with a plurality of intervals along the length direction of the fixing rod, and the middle part of the arc plate 33 is protruded towards the direction back to the supporting part 2. The first fixing lever 31 is hinged to one of the push arms 12, and the second fixing lever 32 is fixed to the other push arm 12 by the locking member 4.

As shown in fig. 3, the locking member 4 includes a mounting block 41 formed on a side of the second fixing rod 32 facing away from the first fixing rod 31, a sliding slot 42 formed on a side of the mounting block 41, a sliding block 43 slidably disposed in the sliding slot 42, and a spring 44 connecting the sliding block 43 and the sliding slot 42. The slide groove 42 extends in the width direction of the second fixing lever 32. One side of the mounting block 41 departing from the second fixing rod 32 is provided with a movable groove 45 which is communicated with the sliding groove 42. A movable rod 46 is movably arranged in the movable groove 45, one end of the movable rod 46 is fixedly connected with the sliding block 43, and the other end of the movable rod 46 extends out of the movable groove 45. A movable block 461 is fixed at one end of the movable rod 46 departing from the slide block 43, the end surface of the slide block 43 departing from the slide groove 42 is an inclined surface, and the inclined direction is inclined from bottom to top to the direction departing from the mounting block 41. A fixing block 47 matched with the mounting block 41 is fixed on the pushing arm 12, a mounting groove 48 matched with the mounting block 41 is formed in the fixing block 47, a clamping groove 49 communicated with the mounting groove 48 is formed in the position, located on one side of the mounting groove 48, on the fixing block 47, and the sliding block 43 is matched with the clamping groove 49.

As shown in fig. 4, fixing sleeves 331 are formed at both ends of the arc plate 33. The fixing member 5 is installed at one side of the fixing sleeve 331. The fixing member 5 includes a threaded rod 51 threadedly coupled to one side of the fixing sleeve 331, and a latch 52 rotatably coupled to one end of the threaded rod 51 and located in the fixing sleeve 331. The threaded rod 51 penetrates through the fixing sleeve 331 and extends in the direction away from the arc-shaped plate 33, the other end of the threaded rod 51 extending in the direction away from the arc-shaped plate 33 is fixedly connected with a twisting block 53, and one side of the clamping block 52 departing from the threaded rod 51 is attached to the outer surface of the push arm 12. The two push arms 12 are provided with a limiting groove 121 on the side away from each other, the limiting groove 121 is arranged along the length direction of the push arms 12, and the shape of the fixture block 52 is matched with the limiting groove 121. The fixing sleeve 331 is provided with a fixing groove 332 corresponding to the latch 52.

As shown in fig. 2, a support member 6 is installed between the base 11 and the push arm 12. The supporting member 6 includes a first supporting rod 61 having one end fixed to the base 11 and the other end fixed to the lower surface of the pushing arm 12, and a second supporting rod 62 having one end fixed to the base 11 and the other end fixed to the lower surface of the other pushing arm 12. The first support bar 61 and the second support bar 62 are arranged with their middle portions crossed.

When the embodiment is used, when the refrigerant tank 7 needs to be transported, the cart is firstly erected, the lower end face of the object carrying plate 14 is abutted to the ground, the tank 7 is convenient to carry the object carrying plate 14, the arc plate 33 covers the surface of the tank 7 after the tank 7 is placed on the object carrying plate 14, the sliding block 43 is extruded into the sliding groove 42, when the mounting block 41 is embedded into the mounting groove 48, the sliding block 43 is aligned to the clamping groove 49, and due to the arrangement of the spring 44, the sliding block 43 is popped out, and the sliding block 43 extends into the clamping groove 49 to be clamped. The tank 7 is fixed between the protection member 3 and the support member 2 through the protection member 3, and the cart is turned over so that the loading plate 14 is separated from the ground, and the rolling wheels 18 and the universal wheels 171 are in contact with the ground, thereby stably supporting the tank 7.

When the tank 7 needs to be detached, the knob block 53 is manually operated to move the knob block 53 in a direction away from the clamping groove 49, so that the movable rod 46 drives the sliding block 43 to move in a direction away from the clamping groove 49, the sliding block 43 is separated from the clamping connection with the clamping groove 49, the arc plate 33 is overturned to a side close to the first fixing rod 31 and hinged with the push arm 12, and the tank 7 can be detached from the cart.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a push away tank car, includes frame (1), locates gyro wheel (18) of frame (1) below, characterized by: the frame (1) comprises a base (11), two parallel push arms (12) arranged on the base (11), a connecting rod (13) arranged on the base (11), and a carrying plate (14) arranged at the lower end of each push arm (12); the push arm (12) is obliquely arranged from bottom to top in the direction close to the connecting rod (13); one end of the connecting rod (13) departing from the base (11) is connected with the push arm (12); the lower end of the push arm (12) extends towards the lower part of the base (11), and a mounting frame (16) is fixed at the lower end of the push arm (12); the roller (18) is arranged on the mounting frame (16); a mounting plate (17) is arranged on the lower end face of the base (11) and on one side deviating from the loading plate (14); the lower end face of the mounting plate (17) is provided with a universal wheel (171); a supporting part (2) is arranged between the two push arms (12); a protection piece (3) is covered above the supporting part (2); the protection part (3) comprises a first fixing rod (31), a second fixing rod (32) which is parallel to the first fixing rod (31) and is arranged at an interval with the first fixing rod (31), and an arc-shaped plate (33) which is used for connecting the first fixing rod (31) and the second fixing rod (32); a plurality of arc plates (33) are arranged at intervals along the length direction of the fixed rod, and the middle parts of the arc plates (33) are protruded towards the direction departing from the supporting part (2); the first fixed rod (31) is hinged on a push arm (12); the second fixing rod (32) is fixed on the other pushing arm (12) through a locking piece (4).

2. The push tank car as claimed in claim 1, wherein: the lock catch piece (4) comprises an installation block (41) arranged on one side, away from the first fixing rod (31), of the second fixing rod (32), a sliding groove (42) arranged on the installation block (41) and located on one side, perpendicular to the second fixing rod (32), of the installation block (41), a sliding block (43) arranged in the sliding groove (42) in a sliding mode, and a spring (44) for connecting the sliding block (43) and the sliding groove (42); the upper end surface of the mounting block (41) is provided with a movable groove (45) which is communicated with the sliding groove (42); a movable rod (46) is movably arranged in the movable groove (45); one end of the movable rod (46) is fixedly connected with the sliding block (43), and the other end of the movable rod (46) extends out of the movable groove (45); one end of the movable rod (46) departing from the sliding block (43) is provided with a movable block (461); the end surface of the sliding block (43) departing from the sliding chute (42) is an inclined surface which is obliquely arranged from bottom to top in the direction departing from the mounting block (41); a fixed block (47) is arranged on the push arm (12); the fixed block (47) is provided with a mounting groove (48) matched with the mounting block (41); a clamping groove (49) communicated with the mounting groove (48) is formed in the position, located on one side of the mounting groove (48), of the fixing block (47); the sliding block (43) is matched with the clamping groove (49).

3. The push tank car as claimed in claim 1, wherein: both ends of the arc-shaped plate (33) are provided with fixed sleeves (331); and a fixing piece (5) used for locking the fixing sleeve (331) is arranged on one side of the fixing sleeve (331).

4. The push tank car as claimed in claim 3, wherein: the fixing piece (5) comprises a threaded rod (51) in threaded connection with one side of the fixing sleeve (331) and a clamping block (52) which is rotationally connected with one end of the threaded rod (51) and is positioned in the fixing sleeve (331); the threaded rod (51) penetrates through the fixing sleeve (331) and extends in the direction back to the arc-shaped plate (33); the other end of the threaded rod (51) extending is fixedly connected with a twisting block (53); one side of the clamping block (52) departing from the threaded rod (51) is attached to the outer surface of the push arm (12).

5. The push tank car as claimed in claim 1, wherein: the carrying plate (14) is vertical to the bottom end of the push arm (12) and extends towards the direction below the push arm (12); a baffle (141) is arranged at one side close to the lower part of the push arm (12); the middle part of the baffle (141) protrudes towards the lower part of the push arm (12) to form an arc shape.

6. The push tank car as claimed in claim 1, wherein: a supporting piece (6) is arranged between the base (11) and the pushing arm (12); the supporting piece (6) comprises a first supporting rod (61) and a second supporting rod (62), wherein one end of the first supporting rod is fixed on the base (11), the other end of the first supporting rod is fixed on the lower surface of the push arm (12), one end of the second supporting rod is fixed on the base (11), and the other end of the second supporting rod is fixed on the lower surface of the other push arm (12); the middle parts of the first supporting rod (61) and the second supporting rod (62) are arranged in a crossed mode.

7. The push tank car as claimed in claim 1, wherein: the supporting part (2) is an arc-shaped supporting plate (21) with the middle part protruding towards the direction departing from the protection part (3); the supporting plates (21) are arranged at intervals along the length direction of the push arm (12).

8. The push tank car as claimed in claim 1, wherein: one end of the push arm (12) departing from the loading plate (14) is formed with a bent grab rail rod (15); the grab rail (15) is sleeved with a rubber sleeve (151).