Workbench

Abstract

To install a workbench across an obstacle.SOLUTION: A workbench 100 of the present invention includes a pair of leg members 132a, a first leg body 132b to which the pair of leg members 137a are connected via a plurality of tread members 137c to 131A at positions vertically separated from each other, a second leg body 138a to which the pair of leg members 138b and 131B are connected so as to be able to straddle an obstacle, and a top plate part 110 which is installed between the first leg body and the second leg body 131A. 131B.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a workbench. [Background technology]

[0002] When pouring concrete, it is generally done by supplying fresh concrete (ready-mixed concrete) transported by a truck mixer (mixer truck) to a concrete pump truck, and then pumping the ready-mixed concrete from the concrete pump truck through pipes to the pouring site.

[0003] Patent Document 1 discloses a hopper rear cover device that has a retractable cover to prevent ready-mixed concrete supplied from a mixer truck into the hopper of a concrete pump truck from scattering behind the hopper and adhering to the discharge piping located behind the hopper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 8-338135 Summary of the Invention [Problem to be solved by the invention]

[0005] When fresh concrete is supplied from a mixer truck to the hopper of a concrete pump truck, it flows from the mixer truck's drum through a chute and drops into the hopper located at the rear of the concrete pump truck. When the fresh concrete loaded in the mixer truck runs out, it cannot be pushed out, and fresh concrete may remain in the chute without flowing. In such cases, workers sweep away the fresh concrete remaining in the chute using a bamboo broom or similar tool, allowing it to drop into the hopper of the concrete pump truck. Because the mixer truck's chute is located above floor level, workers must work while putting their feet on the hopper of the concrete pump truck or work from a work platform installed between the mixer truck and the concrete pump truck.

[0006] However, the hoppers of concrete pump trucks are often coated with a lubricant to prevent ready-mixed concrete from adhering to them, which often makes it difficult for workers to get a stable footing when they place their feet on the hopper. Furthermore, when installing a work platform between the mixer truck and the concrete pump truck, the piping at the rear end of the concrete pump truck's hopper becomes an obstacle, making it difficult to install the work platform in an appropriate position.

[0007] The present invention has been made in consideration of the above-mentioned problems, and has an object to make it possible to set up a work platform across an obstacle. [Means for solving the problem]

[0008] The workbench of the present invention is characterized by comprising a first leg body in which a pair of first leg members are connected via multiple step members at positions spaced apart vertically, a second leg body in which a pair of second leg members are connected so as to be able to straddle obstacles, and a top plate portion suspended between the first leg body and the second leg body. [Effects of the Invention]

[0009] According to the present invention, a work platform can be installed across an obstacle. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a perspective view showing an example of the configuration of a workbench. [Figure 2] FIG. 1 is a side view of the workbench seen from the left side. [Figure 3] FIG. 10 is a rear view of the workbench seen from the rear side. [Figure 4] FIG. 2 is a front view of the workbench. [Figure 5] FIG. 10 is a side view showing the workbench in a folded state. [Figure 6] FIG. 1 is a plan view showing a state in which ready-mixed concrete is being supplied from a mixer truck into a hopper of a concrete pump truck. [Figure 7] FIG. 1 is a perspective view showing a state in which a work platform is installed between a mixer truck and a concrete pump truck. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, the workbench according to this embodiment will be described with reference to the drawings. The workbench 100 according to this embodiment is a workbench for a worker to work at height. The workbench 100 has a height of, for example, approximately 1100 mm from the floor surface (ground surface) to a top plate portion 110 (described later).

[0012] FIG. 1 is a perspective view showing an example of the configuration of workbench 100. FIG. 2 is a side view of workbench 100 as seen from the left side. FIG. 3 is a rear view of workbench 100 as seen from the rear side, with second leg body 131B, described later, omitted. FIG. 4 is a front view of workbench 100 as seen from the front side, with first leg body 131A, described later, omitted. For ease of explanation, in each drawing, the front side is indicated as Fr, the rear side as Rr, the right side as R, and the left side as L, as necessary. The workbench 100 includes a top panel 110, legs 130, a handle 150, and a rotating part 160.

[0013] The top panel 110 functions as a foothold for workers working at height. The top panel 110 is rectangular with its longitudinal direction in the left-right direction and its shorter side in the front-to-rear direction. Its length in the left-to-right direction is, for example, approximately 500 mm, and its length in the front-to-rear direction is, for example, approximately 400 mm. The top panel 110 is supported by first leg body 131A and second leg body 131B of the leg unit 130. The top panel 110 is formed by connecting multiple long top panel members. Each top panel member is made of, for example, an aluminum alloy and formed by extrusion molding. The top panel 110 has multiple projections formed at intervals on the entire upper surface, which serves as a work surface, to act as anti-slip surfaces.

[0014] The legs 130 have the function of supporting the weight of the top panel 110 and the weight of a worker working on the top panel 110. The leg portion 130 has a first leg body 131A and a second leg body 131B. The first leg 131A is located at the rear in the front-to-rear direction and extends from the top panel 110 toward the floor. The second leg 131B is located at the front in the front-to-rear direction and extends from the top panel 110 toward the floor. As shown in FIG. 2, the first leg 131A and the second leg 131B face each other at positions separated in the front-to-rear direction and incline so as to move away from each other toward the lower end. Therefore, the first leg 131A and the second leg 131B each touch the ground at an angle rather than perpendicular to the horizontal floor surface. The first leg 131A and the second leg 131B are not symmetrical front-to-rear and have different inclination angles relative to the horizontal floor surface. Specifically, the inclination angle α2 of the acute angle side of the second leg 131B is greater than the inclination angle α1 of the acute angle side of the first leg 131A. Since the inclination angle α2 of the acute angle side of the second leg 131B is closer to vertical than the inclination angle α1 of the acute angle side of the first leg 131A, the top plate portion 110 can be brought closer to the wall or the like by installing the workbench 100 so that the second leg 131B faces the wall or the like.

[0015] First leg 131A is shaped like a ladder, allowing an operator to ascend and descend between top panel 110 and the floor. First leg 131A is rotatably connected to the rear end of top panel 110 (in the direction of arrow r1 shown in FIG. 2). By rotating first leg 131A, first leg 131A is folded so as to overlap top panel 110. The first leg body 131A has a pair of leg members (first leg members) 132a, 132b and a plurality of step members 137a to 137c (see FIG. 3). The leg members 132a and 132b are located at both left-right end portions of the top plate portion 110. The leg members 132a and 132b are located so that their upper ends overlap the top plate portion 110 when viewed from the rear. The leg members 132a and 132b face each other with a gap between them in the left-right direction and are inclined so as to move away from each other toward their lower ends. Each of the leg members 132a and 132b has a main leg 133 and an extendable leg 134. The main leg 133 is a main component of the leg members 132a and 132b. The main leg 133 is made of, for example, an aluminum alloy and formed by extrusion molding. The main leg 133 is, for example, a hollow or solid component with a substantially rectangular cross section.

[0016] The telescopic leg 134 is a member that extends and retracts the leg members 132a and 132b along the longitudinal direction. The telescopic leg 134 fits inside the main leg 133 and is slidable along the longitudinal direction of the main leg 133. The telescopic leg 134 is made of, for example, an aluminum alloy and formed by extrusion molding. The telescopic leg 134 is, for example, a hollow or solid member with a substantially rectangular cross section that is a reduced cross section of the main leg 133. The telescopic leg 134 extends and retracts the length of the leg members 132a and 132b by changing the length that protrudes from the lower end of the main leg 133. In FIGS. 2 and 3, the retracted and extended states of the leg members 132a and 132b are indicated by two-dot chain lines. The telescopic leg 134 also has a leg base 135 at its lower end. The leg base 135 is a member that stably grounds the lower ends of the leg members 132a and 132b to the floor. The leg seat 135 is made of, for example, a soft synthetic resin.

[0017] By extending and retracting the leg members 132a, 132b using the extendable legs 134, the top panel 110 can be adjusted to be horizontal even if the floor surface is uneven. The leg members 132a, 132b of this embodiment can be adjusted in stages at a predetermined pitch (approximately 45 mm) in the direction of shortening from the intermediate position and in the direction of extending from the intermediate position. Furthermore, the main landing gear 133 has a locking mechanism 136. The locking mechanism 136 locks the telescopic leg 134 at an intermediate position and at positions where the telescopic leg 134 is extended and retracted in stages relative to the main landing gear 133. The locking mechanism 136 is attached to the side surfaces of the leg members 132a and 132b that face each other.

[0018] The step members 137a to 137c are members on which workers place their feet when ascending or descending. The step members 137a to 137c are spanned horizontally between the main leg 133 of leg member 132a and the main leg 133 of leg member 132b. Therefore, leg member 132a and leg member 132b are integrally connected by multiple step members 137a to 137c spaced at approximately equal intervals in the vertical direction. The step members 137a to 137c improve the rigidity of the first leg body 131A. Since the step members 137a to 137c are intended for workers to place their feet on, they are formed with a wide width in the front-to-rear direction to make it easier for workers to place their feet on them. The step members 137a to 137c are made of, for example, an aluminum alloy and formed by extrusion molding.

[0019] The second leg 131B can straddle obstacles. Unlike the first leg 131A, the second leg 131B is not designed for an operator to ascend and descend between the tabletop 110 and the floor. The second leg 131B is rotatably connected to the front end of the tabletop 110 (in the direction r2 shown in FIG. 2). By rotating the second leg 131B, the second leg 131B is deformed so as to be linear with the tabletop 110 when viewed from the left and right. The second leg body 131B has a pair of leg members (second leg members) 138a, 138b, a cross member 139, and a pair of reinforcing members (first reinforcing member, second reinforcing member) 140a, 140b (see FIG. 4). The leg members 138a and 138b are located at both left-right end portions of the top plate portion 110. The upper ends of the leg members 138a, 138b are lower than the upper ends of the leg members 132a, 132b of the first leg body 131A, and are located lower than the top plate portion 110 when viewed from the front. The leg members 138a and 138b face each other with a gap between them in the left-right direction and are inclined so as to move away from each other toward their lower ends. The leg members 138a, 138b have leg seats 135 at their lower ends.

[0020] The cross member 139 functions as a connecting member that connects the leg members 138a and 138b. The cross member 139 spans between the leg members 138a and 138b in the horizontal direction. Therefore, the leg members 138a and 138b are integrally connected by the cross member 139. The cross member 139 can improve the rigidity of the second leg body 131B. Here, the cross member 139 is connected to the leg members 138a and 138b at a position close to the upper ends of the leg members 138a and 138b so that the second leg body 131B in this embodiment can straddle an obstacle between the leg members 138a and 138b. As shown in FIG. 2, comparing the first leg 131A and the second leg 131B, the cross member 139 of the second leg 131B is not connected below the top step 137a of the first leg 131A, but is connected above the top step 137a. Therefore, as shown in FIG. 4, a wide space S is formed between the cross member 139 and the floor surface of the second leg 131B. The lower end of the space S is at the floor surface, and the upper end is higher than the top step 137a. Therefore, the second leg 131B can straddle an obstacle between the leg members 132a and 132b. As shown in FIG. 2, the cross member 139 is not designed for foot placement, so its front-to-rear width W2 is narrower than the front-to-rear width W1 of the step members 137a-137c. Therefore, it is possible to prevent the worker from ascending and descending between the top panel portion 110 and the floor surface through the second leg body 131B.

[0021] The pair of reinforcing members 140a, 140b are members that improve the rigidity of the second leg 131B. Reinforcing member 140a spans diagonally between cross member 139 and leg member 138a, and reinforcing member 140b spans diagonally between cross member 139 and leg member 138b. Specifically, reinforcing member 140a spans between a position spaced to the right from the left end of cross member 139 and a position spaced above the lower end of leg member 138a. Reinforcing member 140b spans between a position spaced to the left from the right end of cross member 139 and a position spaced above the lower end of leg member 138b. Reinforcing members 140a and 140b face each other with a gap in the left-right direction and are inclined so as to move away from each other as they extend downward. As shown in FIG. 4 , when viewed from the front, the acute angle β1 between reinforcing member 140a and reinforcing member 140b is larger than the acute angle β2 between leg member 138a and leg member 138b. Because leg member 138a and leg member 138b are spaced apart in the left-right direction, reinforcing member 140a and reinforcing member 140b can straddle an obstacle. Furthermore, the left-right distance L1 between the top end of reinforcing member 140a and the top end of reinforcing member 140b is larger than the sum of the left-right distance L2 between the top end of reinforcing member 140a and the top end of leg member 138a and the left-right distance L2 between the top end of reinforcing member 140b and the top end of leg member 138b. This allows reinforcing members 140a and 140b to straddle a thick pipe, as indicated by the two-dot chain line in FIG. 4 . Reinforcing members 140a and 140b are made of, for example, an aluminum alloy and are formed by extrusion molding.

[0022] The handhold 150 is a portion on which an operator places his or her hands when ascending or descending between the top panel 110 and the floor using the first leg 131A. The handhold 150 has a pair of generally rod-shaped handhold members 151a and 151b. The handhold members 151a and 151b are aligned in a generally vertical direction and face each other at the left and right corners of the rear side of the top panel 110, spaced apart in the left-right direction. The handhold members 151a and 151b are connected to the upper ends of the leg members 132a and 132b, respectively, so as to be rotatable (in the direction of arrow r3 shown in FIG. 2). The handhold members 151a and 151b are extendable and retractable in the up-down direction. The handhold members 151a and 151b have support members 152 and extendable members 153. The support member 152 is located below the handle members 151a and 151b and is a hollow member with a substantially rectangular cross section. The support member 152 is made of, for example, an aluminum alloy and is formed by extrusion molding. The telescopic member 153 is located above the handle members 151a and 151b and is a hollow member with a substantially rectangular cross section. The telescopic member 153 is made of, for example, an aluminum alloy and is formed by extrusion molding. The telescopic member 153 fits inside the support member 152 and slides along the support member 152, thereby allowing the handle members 151a and 151b to extend and retract. The handle members 151a and 151b also have depressions 154 (see FIG. 3). When an operator presses the depressions 154, the telescopic member 153 is allowed to slide, and when the operator releases the depression, the telescopic member 153 can be locked in either an extended or retracted state. By rotating handle members 151a and 151b in a contracted state, they are folded along leg members 132a and 132b of first leg body 131A (see FIG. 5). By allowing handle members 151a and 151b to be contracted in this way, it is possible to prevent interference with surrounding obstacles when rotating handle members 151a and 151b during assembly or folding.

[0023] The rotating unit 160 is a part that rotates the leg unit 130 relative to the top panel 110. By rotating the leg unit 130 via the rotating unit 160, the leg unit 130 changes between an open-leg posture in which the leg unit 130 supports the top panel 110 and a closed-leg posture in which the first leg body 131A of the leg unit 130 overlaps the top panel 110 and the second leg body 131B is folded so as to be linear with the top panel 110. Specifically, the rotating unit 160 has rotating bodies 161a and 161b. The rotating body 161a is disposed between the leg members 132a and 132b of the first leg 131A and the top panel 110. As shown in FIG. 2, the rotating body 161a rotates the leg members 132a and 132b about a rotation fulcrum P1 in the direction of an arrow r1 relative to the top panel 110, thereby folding the first leg 131A. Also, as shown in FIG. 2, the rotating body 161b rotates the leg members 138a and 138b about a rotation fulcrum P2 in the direction of an arrow r2 relative to the top panel 110, thereby deforming the second leg 131B so that it becomes linear with the top panel 110.

[0024] FIG. 5 is a side view showing the workbench 100 in a folded state. When the workbench 100 is folded, the first leg 131A and the second leg 131B overlap and are parallel to each other. Specifically, the workbench 100 is folded so that the first leg 131A overlaps the top panel 110 and the second leg 131B, and the second leg 131B is aligned with the top panel 110. As shown in FIG. 5, a gap G is formed between the cross member 139 of the second leg 131B and the top panel 110. To prevent a worker from pinching their fingers when folding the workbench 100, the dimension of the gap G is preferably approximately 25 mm or more, and more preferably approximately 30 mm or more. On the other hand, if the gap G is made larger, the space S from the cross member 139 to the floor shown in FIG. 4 becomes narrower, making it difficult to step over obstacles. Therefore, the dimension of the gap G is preferably approximately 50 mm or less, and more preferably approximately 40 mm or less.

[0025] Next, an example of installing the workbench 100 configured as described above will be described with reference to FIGS. FIG. 6 is a plan view showing a state in which the mixer truck 170 and the concrete pump truck 180 are stopped so that ready-mixed concrete can be supplied from the mixer truck 170 into a hopper 181 of the concrete pump truck 180. When fresh concrete is supplied from the mixer truck 170 to the hopper 181 of the concrete pump truck 180, the mixer truck 170 and the concrete pump truck 180 are arranged with their rear ends close to each other. Here, two mixer trucks 170a and 170b are arranged in parallel, and after the first mixer truck 170a has finished supplying fresh concrete, the adjacent second mixer truck 170b can immediately begin supplying fresh concrete. Also, while the second mixer truck 170b is supplying fresh concrete, the empty first mixer truck 170a can be replaced with a third mixer truck (not shown) loaded with fresh concrete. In this way, by arranging the two mixer trucks 170 in parallel, fresh concrete can be efficiently supplied to the concrete pump truck 180.

[0026] When fresh concrete is supplied from mixer trucks 170a and 170b to a concrete pump truck 180, the fresh concrete is caused to flow from the drums 171 of the mixer trucks 170a and 170b through a chute 172 and dropped into a hopper 181 located at the rear of the concrete pump truck 180. Meanwhile, the concrete pump truck 180 applies pressure to the ready-mixed concrete supplied into a hopper 181 using a pump (not shown) and pumps the concrete through piping 182 located at the rear end of the hopper 181 to the pouring site. The piping 182 has a first pipe section 183 that extends substantially horizontally from the rear end of the hopper 181 toward the rear side of the concrete pump truck 180, and a second pipe section 185 that extends substantially horizontally from the first pipe section 183 via a bent section 184 in one of the left and right directions (see FIG. 7 described later). Note that the bent section 184 and the second pipe section 185 can be modified so that they extend in the other left and right direction depending on the pouring site.

[0027] 6, if the first mixer truck 170a runs out of ready-mixed concrete, the ready-mixed concrete cannot be pushed out, and the ready-mixed concrete may remain in the chute 172 without flowing. In such a case, a worker uses a bamboo broom or the like to sweep away the ready-mixed concrete remaining in the chute 172, causing the remaining ready-mixed concrete to fall into the hopper 181 of the concrete pump truck 180. At this time, the worker can perform work while standing on the work platform 100 by installing the work platform 100 of this embodiment between the first mixer truck 170a and the concrete pump truck 180 and close to the hopper 181 of the concrete pump truck 180. Note that in order to enable the worker to efficiently move between the driver's seat of the first mixer truck 170a and the work platform 100, the work platform 100 is installed on the right side of the driver's seat side of the first mixer truck 170a in the traveling direction.

[0028] FIG. 7 is a perspective view showing an example of a state in which the work platform 100 is installed between the first mixer truck 170a and the concrete pump truck 180. As shown in FIG. As shown in FIG. 7 , the worker can install the workbench 100 so that it straddles the piping 182. Specifically, the worker positions the workbench 100 so that the first pipe section 183 straddles between the leg member 132b of the first leg body 131A and the leg member 138a of the second leg body 131B, positions the workbench 100 so that the second pipe section 185 straddles between the leg members 138a and 138b of the second leg body 131B, and positions the bent portion 184 below the top plate 110. Because a wide space S is formed from the cross member 139 to the floor surface, the second leg body 131B can straddle the second pipe section 185 between the leg members 138a and 138b. By installing the workbench 100 so that it straddles the piping 182 in this manner, the workbench 100 can be installed close to the hopper 181. In addition, the workbench 100 is not limited to being installed as shown in Figure 7, but may also be installed so that the first pipe portion 183 is positioned so as to straddle between leg member 138a and leg member 138b of the second leg body 131B, the second pipe portion 185 is positioned so as to straddle between leg member 132a of the first leg body 131A and leg member 138b of the second leg body 131B, and the bent portion 184 is positioned below the top plate portion 110.

[0029] Furthermore, if the floor surface is uneven and the top panel 110 is not level, the worker adjusts the top panel 110 to be level by using the extendable legs 134 of the first leg body 131A to extend and retract the leg members 132a, 132b according to the step. After installing the workbench 100, the worker can use the step members 137a to 137c of the first leg body 131A to stand on the top panel 110 from the floor. Therefore, the worker can use the top panel 110 as a foothold and sweep away any ready-mixed concrete remaining in the chute 172 using a bamboo broom or the like in a stable state. After this, the worker can fold the workbench 100 to store it compactly.

[0030] As described above, according to this embodiment, the workbench 100 includes a first leg body 131A in which a pair of leg members 132a, 132b are connected via multiple step members 137a-137c at positions spaced apart vertically, a second leg body 131B in which a pair of leg members 138a, 138b are connected so as to be able to straddle an obstacle, and a top panel 110 that is installed between the first leg body 131A and the second leg body 131B. Therefore, the workbench 100 can be installed so that the obstacle is straddled between the leg members 138a and 138b.

[0031] Furthermore, according to this embodiment, the second leg 131B is not connected between the leg members 138a and 138b at a position below the top of the multiple step members 137a to 137c, but is connected above the top via the cross member 139. Therefore, even if an obstacle is as high as the top of the step members 137a to 137c, the work platform 100 can be installed so that the leg members 138a and 138b straddle the obstacle.

[0032] Although the present invention has been described above with reference to the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment, and modifications and the like are possible within the scope of the present invention. In the above-described embodiment, the case where the workbench 100 is installed so that the second leg 131B straddles a pipe as an obstacle is described, but this is not limited to this case, and the workbench 100 may also be installed so as to straddle other obstacles. In the above-described embodiment, the first leg 131A has been described as having three step members 137a to 137c, but this is not limited to this case and the first leg 131A may have two step members, or four or more step members.

[0033] In the above-described embodiment, leg members 138a and 138b are not connected below the topmost step member 137a, but are connected via cross member 139 above the topmost step member 137a. However, this is not a limitation. Leg members 138a and 138b may not be connected below step members 137b and 137c that are one or two steps lower than the topmost step, but may be connected above step members 137b and 137c that are one or two steps lower than the topmost step. Furthermore, leg members 138a and 138b may not be connected below the bottommost step member 137c, but may be connected above the bottommost step member 137c.

[0034] In the above-described embodiment, the leg members 132a, 132b of the first leg body 131A are extendable and retractable, and the leg members 138a, 138b of the second leg body 131B are not extendable and retractable. However, this is not limited to this case, and the leg members 138a, 138b of the second leg body 131B may also be configured to be extendable and retractable. In this embodiment, the second leg 131B is described as being configured such that a pair of leg members 138a, 138b are connected so as to be able to straddle an obstacle, but this is not limited to this case and can be modified as appropriate depending on the task, etc. [Explanation of symbols]

[0035] 100: Workbench 110: Top plate portion 131A: First leg body 131B: Second leg body 132a, 132b: First leg member 137a to 137c: Step members 138a, 138b: Second leg member 139: Cross member 140a, 140b: Reinforcing member

Claims

1. a first leg body in which a pair of first leg members are connected via a plurality of step members at positions spaced apart vertically; a pair of second leg members connected to each other so as to be able to straddle an obstacle; A workbench comprising: a top plate portion supported by the first leg body and the second leg body.

2. The second leg body is A workbench as described in claim 1, characterized in that the pair of second leg members are not connected at a position below the uppermost step of the plurality of step members, but are connected via a cross member at a position above the uppermost step.

3. The second leg body is A workbench as described in claim 1, characterized in that the pair of second leg members are not connected at a position below the step member one step lower than the topmost step among the plurality of step members, but are connected via a cross member at a position above the step member one step lower than the topmost step.

4. The cross member is 4. A workbench according to claim 2, wherein the width in the front-to-rear direction is smaller than the width in the front-to-rear direction of the step member.

5. The second leg body is A workbench described in any one of claims 2 to 4, characterized in that it has a first reinforcing member that is diagonally spanned between the cross member and one of the pair of second leg members, and a second reinforcing member that is diagonally spanned between the cross member and the other of the pair of second leg members.

6. The second leg body is the top plate portion is rotatably connected to the top plate portion so as to be linear with the top plate portion, A workbench described in any one of claims 2 to 5, characterized in that when the second leg body is rotated so as to be linear with respect to the top plate portion, a gap is formed between the cross member and the top plate portion to prevent fingers from being pinched.

7. The second leg body is The pair of second leg members are connected by a connecting member, and a space is formed from the floor surface to the connecting member, The space is 2. A workbench according to claim 1, wherein the upper end is positioned higher than the uppermost step of the plurality of step members.

8. a substantially rod-shaped handle portion on which an operator places his / her hand when ascending or descending between the top plate portion and the ground surface; 8. The workbench according to claim 1, wherein the handle is extendable.

9. A workbench is installed across a pipe having a first pipe portion and a second pipe portion each extending substantially horizontally and a bent portion located between the first pipe portion and the second pipe portion, a first leg body in which a pair of first leg members are connected via a plurality of step members at positions spaced apart vertically; a second leg body in which a pair of second leg members are connected via a connecting member; a top plate portion bridged between the first leg body and the second leg body, A workbench characterized in that it is installed so that the first pipe portion can be straddled between one of the pair of first leg members and one of the pair of second leg members, and so that the second pipe portion can be straddled between the pair of second leg members.

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